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Calculadora y simplificador de álgebra de Boole paso a paso (cada ley nombrada y verificada)

Una calculadora de álgebra de Boole que muestra cada paso: cada reescritura nombra la ley que aplicó, muestra la expresión antes y después, y el resultado final lleva una comprobación exacta de equivalencia con lo que escribiste.

Todo se ejecuta en tu navegador; no se envía nada a ningún sitio.

Pega una expresión y el simplificador aplica las leyes del álgebra de Boole (identidad, nula, idempotencia, complemento, absorción, De Morgan, distributiva, las identidades de XOR y las reglas de eliminación de la implicación, el bicondicional, NAND, NOR y XNOR) hasta que ninguna la acorta más. Cada paso se lista con el nombre de la ley, la instancia de la regla (por ejemplo A AND TRUE = A), el fragmento que reescribió y la expresión completa tras el paso, de modo que la lista se lee como un ejercicio resuelto.

El resultado se etiqueta a propósito como simplificado, no mínimo. La reescritura elige las leyes según una medida de tamaño y se detiene cuando ninguna aplica; otra secuencia puede llegar a una forma más corta, y el motor nunca afirma que una forma sea la más pequeña. Para una suma de productos sin ningún término eliminable, usa el solucionador de mapas de Karnaugh, que obtiene una cobertura irreducible para hasta cuatro variables y la comprueba en todas las filas; para las formas canónicas, el conversor a FNC y FND.

Sea cual sea el resultado, está comprobado: el motor demuestra que la expresión simplificada coincide con la original en todas las asignaciones antes de mostrarla, y la etiqueta lo dice. Si la comprobación no pudo completarse, el resultado se marca como no verificado en lugar de presentarse como equivalente.

Límites

  • Tablas de verdad hasta 12 entradas (4096 filas).
  • Mapas de Karnaugh hasta 4 variables efectivas.
  • Formas normales hasta 4096 términos; expresiones hasta 20000 caracteres y 64 entradas.

Cómo escribir expresiones

Escribe las entradas como nombres (socio, A, credito_ok) y combínalas con AND, OR, NOT, XOR, -> (implica), <-> (si y solo si), NAND(a, b), NOR(a, b), XNOR(a, b), o los símbolos &&, ||, !, ∧, ∨, ¬, ·, +, ′. También funcionan las formas de mintérminos y maxtérminos: Σm(A, B, C; 1, 3), ΠM(A, B; 0). Precedencia: NOT, luego AND, luego XOR, luego OR, luego ->, luego <->; usa paréntesis para ser explícito. =, ==, ^, &, | y ~ se rechazan con una corrección.

Ejemplo

f := (A AND B) OR (A AND NOT B) OR (NOT A AND B) · salida

Comprobaciones exactas

¿Siempre verdadera (tautología)? No Contraejemplo: A = F, B = F · Exhaustively checked and solver cross-checked · 1 filas
¿Siempre falsa (contradicción)? No Contraejemplo: A = F, B = V · Exhaustively checked and solver cross-checked · 2 filas
¿Puede ser verdadera? Sí Asignación de ejemplo: A = F, B = V · Exhaustively checked and solver cross-checked · 2 filas

Tabla de verdad (4 filas)

Calculadora y simplificador de álgebra de Boole paso a paso (cada ley nombrada y verificada)
#ABf
0FALSOFALSOFALSO
1FALSOVERDADEROVERDADERO
2VERDADEROFALSOVERDADERO
3VERDADEROVERDADEROVERDADERO

Lectura en lenguaje claro

Principiantef es verdadero exactamente cuando se cumple al menos una de las condiciones siguientes (pueden cumplirse varias):
1. A y B son ambos verdaderos
2. A es verdadero y B es falso
3. A es falso y B es verdadero
En todos los demás casos, f es falso.
Sobre los operadores:
- OR (O) es inclusivo: es verdadero en cuanto al menos una parte es verdadera, también cuando lo son varias.
- AND (Y) solo es verdadero cuando todas sus partes son verdaderas.
- NOT (NO) invierte un valor: lo verdadero pasa a ser falso y lo falso, verdadero.
Intermediof es verdadero exactamente cuando se cumple al menos una de las condiciones siguientes (pueden cumplirse varias):
1. A y B son ambos verdaderos
2. A es verdadero y B es falso
3. A es falso y B es verdadero
En todos los demás casos, f es falso.
Avanzadof es verdadero exactamente cuando se cumple al menos una de las condiciones siguientes (pueden cumplirse varias) [disyunción inclusiva ∨]:
1. A y B son ambos verdaderos [conjunción ∧]
2. A es verdadero y B es falso [conjunción ∧]
3. A es falso y B es verdadero [conjunción ∧]
En todos los demás casos, f es falso.
Notación formal: (A ∧ B) ∨ (A ∧ ¬B) ∨ (¬A ∧ B)

Diagrama lógico

Boolean algebra calculator and simplifier with steps (every law named and verified) Boolean algebra calculator and simplifier with steps (every law named and verified) A B f OR AND AND NOT AND NOT
Boolean algebra calculator and simplifier with steps (every law named and verified) Boolean algebra calculator and simplifier with steps (every law named and verified) A B f OR AND AND NOT AND NOT

Simplificación paso a paso

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

(A AND B) OR (A AND NOT B) OR (NOT A AND B)

Mapa de Karnaugh

A \ B
0
1
0
0m0
1m1
1
1m2
1m3
  1. celdas m2, m3A
  2. celdas m1, m3B
A OR B · Derived A OR B. Exactly equivalent on every assignment.

Mintérminos y maxtérminos

f(A, B) = Σm(1, 2, 3)f(A, B) = ΠM(0)

Orden de variables: A, B · 4 filas

Formas normales

Forma normal conjuntiva (FNC)

A OR B

1 cláusulas, 2 literales · complete · Distributividad ×2, Complemento ×2, Absorción ×2

Forma normal disyuntiva (FND)

(A AND B) OR (A AND NOT B) OR (NOT A AND B)

3 términos, 6 literales · complete

Solo NAND, solo NOR

Forma solo con NAND

NAND(NAND(NAND(NAND(A, B), NAND(A, NAND(B, B))), NAND(NAND(A, B), NAND(A, NAND(B, B)))), NAND(NAND(A, A), B))

12 compuertas · equivalencia verificada en todas las filas

Forma solo con NOR

NOR(NOR(NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), B)), NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), B))), NOR(A, NOR(B, B))), NOR(NOR(NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), B)), NOR(NOR(NOR(A, A), NOR(B, B)), NOR(NOR(A, A), B))), NOR(A, NOR(B, B))))

33 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: 1e26d6a9392a19f8f71846e24ced7ef700b5c9d0803088780da8f5e3d7258692
Assumptions digest: d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78

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

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})
    # -> {'f': False}
    model.output_f({'A': False, 'B': False})
    # -> False
    model.evaluate({'A': 1, 'B': 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": "1e26d6a9392a19f8f71846e24ced7ef700b5c9d0803088780da8f5e3d7258692",
    "assumptions_digest": "d58ee1ad38e23e5093e4baa1047b5ae70d6972e08f555e34ac3fa16df63c4a78",
    "primary_output": "f",
    "unused_inputs": (),
    "subcircuits": (),
}

# Stable ID -> generated identifier (reversible mapping; names are exact, escaped strings).
IDENTIFIER_MAP = {
    "v_f9428439fc6e": {"kind": "input", "name": "A", "identifier": "input_A"},
    "v_7ed49d9eeb8c": {"kind": "input", "name": "B", "identifier": "input_B"},
    "f_65352ff87c27": {"kind": "output", "name": "f", "identifier": "output_f"},
}

INPUT_NAMES = ("A", "B")
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) -> bool:
    """Decision output 'f': (A AND B) OR (A AND NOT B) OR (NOT A AND B)"""
    return (input_A and input_B) or (input_A and (not input_B)) or ((not input_A) and input_B)


# ---- Public API ----


def output_f(inputs: Mapping[str, bool], *, check_scope: bool = True) -> bool:
    """Decision output 'f' (stable ID f_65352ff87c27).

    'f' := (A AND B) OR (A AND NOT B) OR (NOT A AND B)

    Required inputs: 'A', 'B'.
    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"), check_scope)
    if check_scope:
        _require_in_scope(values)
    output_f_value = _compute_output_f(values["A"], values["B"])
    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'.
    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"), check_scope)
    if check_scope:
        _require_in_scope(values)
    output_f_value = _compute_output_f(values["A"], values["B"])
    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: 1e26d6a9392a19f8f71846e24ced7ef700b5c9d0803088780da8f5e3d7258692
-- 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_f9428439fc6e: A -> "in_A"
--   v_7ed49d9eeb8c: B -> "in_B"
-- Output columns:
--   f_65352ff87c27: 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_65352ff87c27)
--   f := (A AND B) OR (A AND NOT B) OR (NOT A AND B)
--   PRECONDITION: "in_A", "in_B" are non-NULL booleans.
--   (("in_A" AND "in_B") OR ("in_A" AND (NOT "in_B")) OR ((NOT "in_A") AND "in_B"))
--

-- ----------------------------------------------------------------------------------------------
-- 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") AS (
  -- tangibool:example-rows:begin
  VALUES
    (1, FALSE, FALSE),
    (2, FALSE, TRUE),
    (3, TRUE, FALSE),
    (4, TRUE, TRUE),
    (5, NULL::boolean, FALSE)
  -- tangibool:example-rows:end
),
checked AS (
  SELECT
    inputs.*,
    CASE
      WHEN "in_A" IS NULL OR "in_B" IS NULL THEN 'invalid_input'
      ELSE 'ok'
    END AS "status"
  FROM inputs
)
SELECT
  "row_id",
  "in_A",
  "in_B",
  "status",
  CASE WHEN "status" = 'ok' THEN (("in_A" AND "in_B") OR ("in_A" AND (NOT "in_B")) OR ((NOT "in_A") AND "in_B")) 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: 1e26d6a9392a19f8f71846e24ced7ef700b5c9d0803088780da8f5e3d7258692
; 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_f9428439fc6e: A -> in_A
;   v_7ed49d9eeb8c: B -> in_B
;   f_65352ff87c27: 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

; ---- Outputs (dependencies first)
; output f (stable ID f_65352ff87c27): (A AND B) OR (A AND NOT B) OR (NOT A AND B)
(define-fun out_f () Bool (or (and in_A in_B) (and in_A (not in_B)) (and (not in_A) in_B)))

; ---- 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 = \left(A \cdot B\right) + \left(A \cdot \overline{B}\right) + \left(\overline{A} \cdot B\right)

Preguntas

¿Muestra los pasos para expresiones con XOR, implicación o NAND?

Sí. Esos operadores se reescriben primero con sus leyes de eliminación (por ejemplo A -> B pasa a NOT A OR B), que aparecen como pasos como cualquier otro, y la simplificación continúa sobre la forma con AND, OR y NOT.

El resultado es más largo que el mío. ¿El mío está mal?

No necesariamente. Comprueba los dos con el comprobador de equivalencia: si son equivalentes, el tuyo es una alternativa válida a la que la reescritura no llegó. Si no lo son, el comprobador te da la fila en la que difieren.

¿Puede simplificar una condición if de mi código?

Sí: escribe la condición con los operadores del motor (&&, ||, ! se aceptan) y nombra las subcondiciones como entradas, por ejemplo edad_ok && (socio || cupon) && !caducado. La forma simplificada puede volver a tu código; las exportaciones a Python y SQL te la dan en esos lenguajes.

Relacionado

Herramientas

Ejercicios

Herramientas

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.