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Implicantes primos e implicantes primos esenciales en un mapa de Karnaugh

Σm(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14) en un mapa: el motor encuentra seis implicantes primos y cubre los diez unos con tres de ellos; la cobertura y la expresión derivada están en el mapa.

Un implicante primo es un grupo de unos del mapa que no se puede agrandar; uno esencial es un implicante primo que es el único grupo que cubre algún uno. Esta función, con diez filas verdaderas de dieciséis, es el ejercicio estándar para distinguir los dos. La lectura del motor reformula la lista de mintérminos, y la tabla muestra la columna verdadera en las filas 0, 1, 2, 5, 6, 7, 8, 9, 10 y 14, con maxtérminos ΠM(3, 4, 11, 12, 13, 15).

Las comprobaciones: no es tautología, contraejemplo A = FALSO, B = FALSO, C = VERDADERO, D = VERDADERO; satisfacible con las cuatro entradas en FALSO. Ninguna ley de simplificación se aplica a la lista. El conversor la desarrolla en una FND de diez términos y 40 literales y una FNC de seis cláusulas, 24 literales; compuertas: 719 NAND, 1247 NOR. El mapa informa de seis implicantes primos y dibuja tres de ellos: NOT B AND NOT C, C AND NOT D y NOT A AND B AND D. Cubre todos los unos; la expresión derivada es el OR de esos tres grupos, exactamente equivalente, y los otros tres implicantes primos no hacían falta.

La lección se traslada a la escritura de reglas: un conjunto de reglas suele tener más cláusulas candidatas de las que necesita, y las que merece la pena conservar son las que por sí solas cubren algún caso. Entre los grupos dibujados, la celda 9 solo la cubre NOT B AND NOT C y la celda 14 solo C AND NOT D, que es lo que hace indispensable a un grupo. Ten en cuenta que el motor informa del número de implicantes primos y de la cobertura que eligió; la comparativa con Quine-McCluskey explica cómo se hallan esas coberturas cuando el mapa es demasiado grande.

f := Σm(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14) · salida

Comprobaciones exactas

¿Siempre verdadera (tautología)? No Contraejemplo: A = F, B = F, C = V, D = V · Exhaustively checked and solver cross-checked · 4 filas
¿Siempre falsa (contradicción)? No Contraejemplo: A = F, B = F, C = F, D = F · Exhaustively checked and solver cross-checked · 1 filas
¿Puede ser verdadera? Sí Asignación de ejemplo: A = F, B = F, C = F, D = F · Exhaustively checked and solver cross-checked · 1 filas

Tabla de verdad (16 filas)

Implicantes primos e implicantes primos esenciales en un mapa de Karnaugh
#ABCDf
0FALSOFALSOFALSOFALSOVERDADERO
1FALSOFALSOFALSOVERDADEROVERDADERO
2FALSOFALSOVERDADEROFALSOVERDADERO
3FALSOFALSOVERDADEROVERDADEROFALSO
4FALSOVERDADEROFALSOFALSOFALSO
5FALSOVERDADEROFALSOVERDADEROVERDADERO
6FALSOVERDADEROVERDADEROFALSOVERDADERO
7FALSOVERDADEROVERDADEROVERDADEROVERDADERO
8VERDADEROFALSOFALSOFALSOVERDADERO
9VERDADEROFALSOFALSOVERDADEROVERDADERO
10VERDADEROFALSOVERDADEROFALSOVERDADERO
11VERDADEROFALSOVERDADEROVERDADEROFALSO
12VERDADEROVERDADEROFALSOFALSOFALSO
13VERDADEROVERDADEROFALSOVERDADEROFALSO
14VERDADEROVERDADEROVERDADEROFALSOVERDADERO
15VERDADEROVERDADEROVERDADEROVERDADEROFALSO

Lectura en lenguaje claro

Principiantef es verdadero exactamente cuando la fila de la tabla de verdad de (A, B, C, D) es una de las filas 0, 1, 2, 5, 6, 7, 8, 9, 10 y 14.
En todos los demás casos, f es falso.
Sobre los operadores:
- Σm enumera las filas de la tabla de verdad (mintérminos) en las que la fórmula es verdadera. Las filas se numeran desde 0 y la primera entrada indicada es el bit más significativo.
Intermediof es verdadero exactamente cuando la fila de la tabla de verdad de (A, B, C, D) es una de las filas 0, 1, 2, 5, 6, 7, 8, 9, 10 y 14.
En todos los demás casos, f es falso.
Avanzadof es verdadero exactamente cuando la fila de la tabla de verdad de (A, B, C, D) es una de las filas 0, 1, 2, 5, 6, 7, 8, 9, 10 y 14 [suma canónica de mintérminos (FND)].
En todos los demás casos, f es falso.
Notación formal: Σm(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)

Diagrama lógico

Prime implicants and essential prime implicants on a K-map Prime implicants and essential prime implicants on a K-map A B C D f Σm(0,1,2,5,6,7,8,9,10,14)ABCD
Prime implicants and essential prime implicants on a K-map Prime implicants and essential prime implicants on a K-map A B C D f Σm(0,1,2,5,6,7,8,9,10,14)ABCD

Simplificación paso a paso

El motor no encontró ninguna ley que acorte esta expresión; ya es tan corta como sus leyes de reescritura permiten.

Σm(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)

Mapa de Karnaugh

AB \ CD
00
01
11
10
00
1m0
1m1
0m3
1m2
01
0m4
1m5
1m7
1m6
11
0m12
0m13
0m15
1m14
10
1m8
1m9
0m11
1m10
  1. celdas m5, m7NOT A AND B AND D
  2. celdas m0, m1, m8, m9NOT B AND NOT C
  3. celdas m2, m6, m10, m14C AND NOT D
(NOT A AND B AND D) OR (NOT B AND NOT C) OR (C AND NOT D) · Derived (NOT A AND B AND D) OR (NOT B AND NOT C) OR (C AND NOT D). Exactly equivalent on every assignment.

Mintérminos y maxtérminos

f(A, B, C, D) = Σm(0, 1, 2, 5, 6, 7, 8, 9, 10, 14)f(A, B, C, D) = ΠM(3, 4, 11, 12, 13, 15)

Orden de variables: A, B, C, D · 16 filas

Formas normales

Forma normal conjuntiva (FNC)

(A OR B OR NOT C OR NOT D) AND (A OR NOT B OR C OR D) AND (NOT A OR B OR NOT C OR NOT D) AND (NOT A OR NOT B OR C OR D) AND (NOT A OR NOT B OR C OR NOT D) AND (NOT A OR NOT B OR NOT C OR NOT D)

6 cláusulas, 24 literales · complete · Desarrollo en mintérminos ×1

Forma normal disyuntiva (FND)

(A AND B AND C AND NOT D) OR (A AND NOT B AND C AND NOT D) OR (A AND NOT B AND NOT C AND D) OR (A AND NOT B AND NOT C AND NOT D) OR (NOT A AND B AND C AND D) OR (NOT A AND B AND C AND NOT D) OR (NOT A AND B AND NOT C AND D) OR (NOT A AND NOT B AND C AND NOT D) OR (NOT A AND NOT B AND NOT C AND D) OR (NOT A AND NOT B AND NOT C AND NOT D)

10 términos, 40 literales · complete · Desarrollo en mintérminos ×1

Solo NAND, solo NOR

Forma solo con NAND

NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))))), NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))), NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))), NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(A, A), NAND(B, B)), NAND(NAND(A, A), NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))))), NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))), NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))), NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))))))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))), NAND(NAND(NAND(A, B), NAND(A, B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))), NAND(NAND(NAND(A, B), NAND(A, B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D)))), NAND(NAND(NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D))))), NAND(NAND(NAND(NAND(NAND(A, A), B), NAND(NAND(A, A), B)), NAND(NAND(C, D), NAND(C, D))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), NAND(D, D)), NAND(NAND(C, C), NAND(D, D)))))), NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(NAND(C, C), D), NAND(NAND(C, C), D))))), NAND(NAND(NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))), NAND(NAND(NAND(A, B), NAND(A, B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D))))), NAND(NAND(NAND(NAND(A, NAND(B, B)), NAND(A, NAND(B, B))), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))), NAND(NAND(NAND(A, B), NAND(A, B)), NAND(NAND(C, NAND(D, D)), NAND(C, NAND(D, D)))))))))

719 compuertas · equivalencia verificada en todas las filas

Forma solo con NOR

NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))), NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))), NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))), NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, D), NOR(C, D))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(A, B), NOR(A, B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))), NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))), NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))), NOR(NOR(NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D))))), NOR(NOR(NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D)))), NOR(NOR(NOR(NOR(A, NOR(B, B)), NOR(A, NOR(B, B))), NOR(NOR(NOR(C, C), NOR(D, D)), NOR(NOR(C, C), NOR(D, D)))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, D), NOR(C, D))))), NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(C, NOR(D, D)), NOR(C, NOR(D, D)))))), NOR(NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))), NOR(NOR(NOR(NOR(NOR(A, A), B), NOR(NOR(A, A), B)), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D))), NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), NOR(B, B))), NOR(NOR(NOR(C, C), D), NOR(NOR(C, C), D)))))))))

1247 compuertas · equivalencia verificada en todas las filas

La misma regla como código

Python
# -*- coding: utf-8 -*-
# Generated by Tangibool (tangibool.python/1). Do not edit by hand; regenerate from the source revision.
# Model: not stated
# Source revision: reference
# Interpretation status: not stated
"""Tangibool evaluator (decision model).

Generated deterministically from the validated Boolean model; it evaluates exactly that
model. It does not establish that the model is a complete, legal, or safe statement of a
real-world rule, and evaluating examples does not verify the rule.

Source revision: reference
Interpretation status: not stated
Exporter: 1.0.0 (format tangibool.python/1; engine 1.0.0; semantics tangibool-semantics/1)
Logic digest: ef325214daf9b0f28403cccbb84a0f1d7d4e03623823a491a1acd21a45ad2a55
Assumptions digest: d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78

Inputs (dict keys, declared order) and generated parameter names:
    'A' -> input_A
    'B' -> input_B
    'C' -> input_C
    'D' -> input_D

Outputs (declared order) and their functions:
    'f' -> output_f(inputs)

Assumptions (the declared scope, checked by in_scope(inputs)):
    none; every complete assignment is in scope.

Input contract:
    Every required input must be exactly True or False (type(value) is bool). Missing
    inputs, None, strings, integers (including 0 and 1), and keys that are not declared
    inputs raise InputError before anything is evaluated, including inputs that a
    short-circuiting operator would never read. Results are always bool.

Scope:
    Decision functions raise OutOfScopeError when the inputs violate an assumption; an
    out-of-scope assignment is never turned into a False result. Pass check_scope=False
    to evaluate without the scope check, and use in_scope(inputs) to test it separately.

Usage:

    import tangibool_model as model

    model.evaluate({'A': False, 'B': False, 'C': False, 'D': False})
    # -> {'f': True}
    model.output_f({'A': False, 'B': False, 'C': False, 'D': False})
    # -> True
    model.evaluate({'A': 1, 'B': False, 'C': False, 'D': False})
    # raises InputError: 1 is an int, not a bool
"""

import collections.abc as _abc
from typing import Dict, Mapping, Tuple

__all__ = [
    "MODEL_INFO",
    "IDENTIFIER_MAP",
    "INPUT_NAMES",
    "OUTPUT_NAMES",
    "ASSUMPTIONS",
    "InputError",
    "OutOfScopeError",
    "minterm_index",
    "in_scope",
    "evaluate",
    "output_f",
]

MODEL_INFO = {
    "format": "tangibool.python/1",
    "mode": "decision",
    "model": None,
    "revision": "reference",
    "interpretation": None,
    "exporter": "1.0.0",
    "engine_version": "1.0.0",
    "semantics_version": "tangibool-semantics/1",
    "logic_digest": "ef325214daf9b0f28403cccbb84a0f1d7d4e03623823a491a1acd21a45ad2a55",
    "assumptions_digest": "d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78",
    "primary_output": "f",
    "unused_inputs": (),
    "subcircuits": (),
}

# Stable ID -> generated identifier (reversible mapping; names are exact, escaped strings).
IDENTIFIER_MAP = {
    "v_12fea8c43079": {"kind": "input", "name": "A", "identifier": "input_A"},
    "v_832f20faf920": {"kind": "input", "name": "B", "identifier": "input_B"},
    "v_6006883da7d4": {"kind": "input", "name": "C", "identifier": "input_C"},
    "v_c1488685b630": {"kind": "input", "name": "D", "identifier": "input_D"},
    "f_bdc58c8f4d15": {"kind": "output", "name": "f", "identifier": "output_f"},
}

INPUT_NAMES = ("A", "B", "C", "D")
OUTPUT_NAMES = ("f",)
ASSUMPTIONS = ()

_DECLARED_INPUTS = frozenset(INPUT_NAMES)
_SCOPE_INPUTS = ()
_ASSUMPTION_FORMULAS = {entry["name"]: entry["formula"] for entry in ASSUMPTIONS}


class InputError(ValueError):
    """Raised when inputs are missing, undeclared, or not exactly True/False.

    Every required input must satisfy type(value) is bool. Missing inputs, None, strings,
    integers (including 0 and 1), and keys that are not declared inputs are rejected before
    anything is evaluated. A missing input is never treated as False. The individual problems
    are listed in the problems attribute.
    """

    def __init__(self, problems):
        self.problems = tuple(problems)
        super().__init__("Invalid inputs: " + "; ".join(self.problems))


class OutOfScopeError(ValueError):
    """Raised when the inputs violate the model's assumptions (its declared scope).

    Outside its assumptions the rule has no decision: this error is never a False result.
    The names of the violated assumptions are in the violated attribute.
    """

    def __init__(self, violated):
        self.violated = tuple(violated)
        details = ", ".join(name + " (" + _ASSUMPTION_FORMULAS.get(name, "?") + ")" for name in self.violated)
        super().__init__(
            "Out of scope: the inputs violate "
            + ("assumption " if len(self.violated) == 1 else "assumptions ")
            + details
            + ". The rule has no decision outside its assumptions; this is not a False result."
        )


def _short_repr(value: object) -> str:
    text = repr(value)
    return text if len(text) <= 60 else text[:57] + "..."


def _checked_inputs(inputs: Mapping[str, bool], required: Tuple[str, ...], check_scope: bool) -> Dict[str, bool]:
    """Validate inputs strictly before anything is evaluated and return a plain copy."""
    if type(check_scope) is not bool:
        raise TypeError("check_scope must be True or False")
    if not isinstance(inputs, _abc.Mapping):
        raise InputError(["inputs must be a mapping from input names to True/False, got " + type(inputs).__name__])
    problems = []
    for key in inputs:
        if type(key) is not str or key not in _DECLARED_INPUTS:
            declared = ", ".join(repr(name) for name in INPUT_NAMES) or "none"
            problems.append("undeclared input " + _short_repr(key) + " (declared inputs: " + declared + ")")
    needed = tuple(required) + (_SCOPE_INPUTS if check_scope else ())
    for name in needed:
        if name not in inputs:
            problems.append("missing required input " + repr(name))
    for key, value in inputs.items():
        if type(key) is str and key in _DECLARED_INPUTS and type(value) is not bool:
            problems.append(
                "input " + repr(key) + " must be True or False (type bool), got "
                + type(value).__name__ + " " + _short_repr(value)
            )
    if problems:
        raise InputError(list(dict.fromkeys(problems)))
    return dict(inputs.items())


def _require_bool_args(function: str, pairs: Tuple[Tuple[str, object], ...]) -> None:
    problems = [
        "argument " + repr(name) + " of " + function + " must be True or False (type bool), got "
        + type(value).__name__ + " " + _short_repr(value)
        for name, value in pairs
        if type(value) is not bool
    ]
    if problems:
        raise InputError(problems)


def minterm_index(*values: bool) -> int:
    """Row index of an assignment over a declared variable order.

    The first value is the most significant bit, so all-False is row 0. Used for indexed
    minterm (sum) and maxterm (product) forms.
    """
    index = 0
    for value in values:
        if type(value) is not bool:
            raise InputError(["minterm_index() takes True/False values, got " + type(value).__name__ + " " + _short_repr(value)])
        index = index * 2 + (1 if value else 0)
    return index


def _scope_values(values: Dict[str, bool]) -> Tuple[Tuple[str, bool], ...]:
    """Value of every enabled, confirmed assumption for validated inputs, in declared order."""
    return ()


def _require_in_scope(values: Dict[str, bool]) -> None:
    violated = tuple(name for name, holds in _scope_values(values) if not holds)
    if violated:
        raise OutOfScopeError(violated)


def in_scope(inputs: Mapping[str, bool]) -> bool:
    """True when the inputs satisfy every assumption (the model's declared scope).

    Requires the inputs the assumptions read; raises InputError for invalid inputs.
    """
    values = _checked_inputs(inputs, (), True)
    return all(holds for _, holds in _scope_values(values))


# ---- Formula bodies (inputs are validated by the public functions below) ----


def _compute_output_f(input_A: bool, input_B: bool, input_C: bool, input_D: bool) -> bool:
    """Decision output 'f': \u03a3m(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)"""
    return minterm_index(input_A, input_B, input_C, input_D) in (0, 1, 2, 5, 6, 7, 8, 9, 10, 14)


# ---- Public API ----


def output_f(inputs: Mapping[str, bool], *, check_scope: bool = True) -> bool:
    """Decision output 'f' (stable ID f_bdc58c8f4d15).

    'f' := \u03a3m(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)

    Required inputs: 'A', 'B', 'C', 'D'.
    Raises InputError for missing, undeclared, or non-bool inputs, and OutOfScopeError
    when check_scope is True and the inputs violate an assumption.
    """
    values = _checked_inputs(inputs, ("A", "B", "C", "D"), check_scope)
    if check_scope:
        _require_in_scope(values)
    output_f_value = _compute_output_f(values["A"], values["B"], values["C"], values["D"])
    return output_f_value


def evaluate(inputs: Mapping[str, bool], *, check_scope: bool = True) -> Dict[str, bool]:
    """Evaluate every output (declared order); each output is computed once.

    Required inputs: 'A', 'B', 'C', 'D'.
    Raises InputError for missing, undeclared, or non-bool inputs, and OutOfScopeError
    when check_scope is True and the inputs violate an assumption.
    """
    values = _checked_inputs(inputs, ("A", "B", "C", "D"), check_scope)
    if check_scope:
        _require_in_scope(values)
    output_f_value = _compute_output_f(values["A"], values["B"], values["C"], values["D"])
    return {
        "f": output_f_value,
    }
PostgreSQL
-- Tangibool PostgreSQL export (tangibool.postgresql/1)
-- Target: PostgreSQL 16 or later with typed boolean inputs; tested with PostgreSQL 18.3 (PGlite 0.5.8).
-- Not a claim of compatibility with other SQL dialects.
-- Model: not stated
-- Source revision: reference
-- Interpretation status: not stated
-- Exporter: 1.0.0 (engine 1.0.0; semantics tangibool-semantics/1)
-- Logic digest: ef325214daf9b0f28403cccbb84a0f1d7d4e03623823a491a1acd21a45ad2a55
-- Assumptions digest: d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78
-- Mode: decision
--
-- Read-only: this file contains only WITH / VALUES / SELECT statements. No DDL, DML,
-- procedures, credentials, network access, or database changes. The expressions are pure
-- Boolean expressions, so their result does not depend on SQL evaluation order.
--
-- NON-NULL INPUT PRECONDITION: NULL is not a truth value of this rule. Every fragment below
-- is defined only when every input column it reads is a non-NULL boolean. The guard template
-- (section 2) marks any NULL input as 'invalid_input' and any row that violates the
-- assumptions as 'out_of_scope', and fills output columns only for 'ok' rows; a NULL in an
-- output column of another row is an envelope marker, not a third truth value. Never wrap
-- the fragments in COALESCE(..., FALSE) or otherwise choose a meaning for unknown inputs.
-- This evaluates the supplied model; it does not show that the model is a complete, legal,
-- or safe statement of a real-world rule.
--
-- Input columns (stable ID: name -> column):
--   v_12fea8c43079: A -> "in_A"
--   v_832f20faf920: B -> "in_B"
--   v_6006883da7d4: C -> "in_C"
--   v_c1488685b630: D -> "in_D"
-- Output columns:
--   f_bdc58c8f4d15: f -> "out_f"
-- Assumptions (scope K; exported separately and never folded into an output):
--   none; every complete input row is in scope.

-- ----------------------------------------------------------------------------------------------
-- 1. Expression fragments (parenthesised; non-NULL boolean inputs required)
-- ----------------------------------------------------------------------------------------------
--
-- [out_f] output f (stable ID f_bdc58c8f4d15)
--   f := \u03a3m(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)
--   PRECONDITION: "in_A", "in_B", "in_C", "in_D" are non-NULL booleans.
--   (((NOT "in_A") AND (NOT "in_B") AND (NOT "in_C") AND (NOT "in_D")) OR ((NOT "in_A") AND (NOT "in_B") AND (NOT "in_C") AND "in_D") OR ((NOT "in_A") AND (NOT "in_B") AND "in_C" AND (NOT "in_D")) OR ((NOT "in_A") AND "in_B" AND (NOT "in_C") AND "in_D") OR ((NOT "in_A") AND "in_B" AND "in_C" AND (NOT "in_D")) OR ((NOT "in_A") AND "in_B" AND "in_C" AND "in_D") OR ("in_A" AND (NOT "in_B") AND (NOT "in_C") AND (NOT "in_D")) OR ("in_A" AND (NOT "in_B") AND (NOT "in_C") AND "in_D") OR ("in_A" AND (NOT "in_B") AND "in_C" AND (NOT "in_D")) OR ("in_A" AND "in_B" AND "in_C" AND (NOT "in_D")))
--

-- ----------------------------------------------------------------------------------------------
-- 2. Guard template (read-only SELECT over an inputs list)
-- ----------------------------------------------------------------------------------------------
-- Replace the example rows between the markers with your own rows, or replace the inputs
-- CTE with a SELECT that provides the boolean columns listed in the header. status is
-- 'invalid_input' when any input is NULL, 'out_of_scope' when the assumptions are false, and
-- 'ok' otherwise; output columns are filled only for 'ok' rows (NULL elsewhere is an
-- envelope marker). Assumption columns are shown for rows with complete inputs.
WITH inputs ("row_id", "in_A", "in_B", "in_C", "in_D") AS (
  -- tangibool:example-rows:begin
  VALUES
    (1, FALSE, FALSE, FALSE, FALSE),
    (2, FALSE, FALSE, FALSE, TRUE),
    (3, FALSE, FALSE, TRUE, FALSE),
    (4, FALSE, FALSE, TRUE, TRUE),
    (5, FALSE, TRUE, FALSE, FALSE),
    (6, FALSE, TRUE, FALSE, TRUE),
    (7, FALSE, TRUE, TRUE, FALSE),
    (8, FALSE, TRUE, TRUE, TRUE),
    (9, TRUE, FALSE, FALSE, FALSE),
    (10, TRUE, FALSE, FALSE, TRUE),
    (11, TRUE, FALSE, TRUE, FALSE),
    (12, TRUE, FALSE, TRUE, TRUE),
    (13, TRUE, TRUE, FALSE, FALSE),
    (14, TRUE, TRUE, FALSE, TRUE),
    (15, TRUE, TRUE, TRUE, FALSE),
    (16, TRUE, TRUE, TRUE, TRUE),
    (17, NULL::boolean, FALSE, FALSE, FALSE)
  -- tangibool:example-rows:end
),
checked AS (
  SELECT
    inputs.*,
    CASE
      WHEN "in_A" IS NULL OR "in_B" IS NULL OR "in_C" IS NULL OR "in_D" IS NULL THEN 'invalid_input'
      ELSE 'ok'
    END AS "status"
  FROM inputs
)
SELECT
  "row_id",
  "in_A",
  "in_B",
  "in_C",
  "in_D",
  "status",
  CASE WHEN "status" = 'ok' THEN (((NOT "in_A") AND (NOT "in_B") AND (NOT "in_C") AND (NOT "in_D")) OR ((NOT "in_A") AND (NOT "in_B") AND (NOT "in_C") AND "in_D") OR ((NOT "in_A") AND (NOT "in_B") AND "in_C" AND (NOT "in_D")) OR ((NOT "in_A") AND "in_B" AND (NOT "in_C") AND "in_D") OR ((NOT "in_A") AND "in_B" AND "in_C" AND (NOT "in_D")) OR ((NOT "in_A") AND "in_B" AND "in_C" AND "in_D") OR ("in_A" AND (NOT "in_B") AND (NOT "in_C") AND (NOT "in_D")) OR ("in_A" AND (NOT "in_B") AND (NOT "in_C") AND "in_D") OR ("in_A" AND (NOT "in_B") AND "in_C" AND (NOT "in_D")) OR ("in_A" AND "in_B" AND "in_C" AND (NOT "in_D"))) END AS "out_f"
FROM checked
ORDER BY "row_id";
SMT-LIB
; Tangibool SMT-LIB export (tangibool.smtlib/1)
; Profile: SMT-LIB 2.6 Boolean subset (QF_UF): Bool constants, define-fun, let, push/pop, assert, check-sat, echo.
; Tested with Z3 5.1.0 (z3-solver 5.2.0, WebAssembly build).
; Model: not stated
; Source revision: reference
; Interpretation status: not stated
; Exporter: 1.0.0 (engine 1.0.0; semantics tangibool-semantics/1)
; Logic digest: ef325214daf9b0f28403cccbb84a0f1d7d4e03623823a491a1acd21a45ad2a55
; Assumptions digest: d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78
; Mode: decision
;
; Reading results: each query block states what sat and unsat mean for its question. A sat
; answer comes with a witness or counterexample (ask for it with (get-model) after sat only);
; unsat settles that scoped query and is solver-checked, not an independently checked proof
; certificate; unknown settles nothing. Blocks are scoped with push/pop, so assertions never
; accumulate across questions. This checks the supplied model, not whether it is a complete,
; legal, or safe statement of a real-world rule.
;
; Symbols (stable ID: name -> symbol):
;   v_12fea8c43079: A -> in_A
;   v_832f20faf920: B -> in_B
;   v_6006883da7d4: C -> in_C
;   v_c1488685b630: D -> in_D
;   f_bdc58c8f4d15: f -> out_f

(set-option :produce-models true)
(set-info :smt-lib-version 2.6)
(set-logic QF_UF)

; ---- Inputs (declared order)
(declare-const in_A Bool) ; A
(declare-const in_B Bool) ; B
(declare-const in_C Bool) ; C
(declare-const in_D Bool) ; D

; ---- Outputs (dependencies first)
; output f (stable ID f_bdc58c8f4d15): \u03a3m(A, B, C, D; 0, 1, 2, 5, 6, 7, 8, 9, 10, 14)
(define-fun out_f () Bool (or (and (not in_A) (not in_B) (not in_C) (not in_D)) (and (not in_A) (not in_B) (not in_C) in_D) (and (not in_A) (not in_B) in_C (not in_D)) (and (not in_A) in_B (not in_C) in_D) (and (not in_A) in_B in_C (not in_D)) (and (not in_A) in_B in_C in_D) (and in_A (not in_B) (not in_C) (not in_D)) (and in_A (not in_B) (not in_C) in_D) (and in_A (not in_B) in_C (not in_D)) (and in_A in_B in_C (not in_D))))

; ---- Assumptions (the scope K; never folded into an output)
; K: conjunction of the enabled, confirmed assumptions (true when there are none)
(define-fun K () Bool true)

; ---- Definitions only: nothing is asserted and no check is run.
; Add (assert ...) and (check-sat) inside (push 1) ... (pop 1) to ask a question.
LaTeX
f = \sum m_{(A, B, C, D)}(0, 1, 2, 5, 6, 7, 8, 9, 10, 14)

El error habitual

Meter todos los implicantes primos en la expresión. Existen seis grupos, pero tres de ellos solo cubren celdas que los otros tres ya cubren, e incluirlos alarga la expresión sin cambiar una sola fila. El resultado derivado del mapa usa los tres grupos necesarios, y la tabla prueba que es igual a la original.

Preguntas

¿Cómo distingo un implicante primo esencial de uno que solo es primo?

Busca un uno que esté en un solo implicante primo; ese implicante es esencial. En este mapa la celda 9 y la celda 14 están cada una en uno solo de los grupos dibujados. Un implicante primo cuyos unos están todos compartidos con otros no es esencial y puede omitirse si el resto ya cubre todo.

Relacionado

Herramientas

Véase también

Ejemplos resueltos

Generado a partir del motor de Tangibool, semántica tangibool-semantics/1, motor 1.0.0, compilación . Cada tabla, mapa, simplificación y veredicto de estas páginas lo calculó el motor de Tangibool al compilar el sitio, y cada afirmación la volvió a comprobar el mismo verificador exacto que usa la app. Los límites se indican donde aplican. © 2026 Foreranger LTD.