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Что (кто) такое logical formula - определение
FINITE SEQUENCE OF SYMBOLS FROM A GIVEN ALPHABET THAT IS PART OF A FORMAL LANGUAGE
Well formed formula; Well-formed formulas; Formula (mathematical logic); Well formed formulae; Well-formed formulae; Subformula; Layman Allen; Quantifier-free formula; Formula (logic); Logical expression; Logical formula; Formula (logics)
Найдено результатов: 1935
Well-formed formula
In mathematical logic, propositional logic and predicate logic, a well-formed formula, abbreviated WFF or wff, often simply formula, is a finite sequence of symbols from a given alphabet that is part of a formal language.Formulas are a standard topic in introductory logic, and are covered by all introductory textbooks, including Enderton (2001), Gamut (1990), and Kleene (1967) A formal language can be identified with the set of formulas in the language.
logical positivism
ASSERTION THAT ONLY STATEMENTS VERIFIABLE THROUGH EMPIRICAL OBSERVATION ARE MEANINGFUL
Logical empiricism; Logical positivists; Logical Positivist; Logical Positivism; Neopositivism; Neo-positivism; Logical positivist; Logical empiricist; Logical Empiricism; Vienna positivism; Protocol statement; Basic statement; Observational statement
(also logical empiricism)
¦ noun a form of positivism which considers that the only meaningful philosophical problems are those which can be solved by logical analysis.
Logical positivism
ASSERTION THAT ONLY STATEMENTS VERIFIABLE THROUGH EMPIRICAL OBSERVATION ARE MEANINGFUL
Logical empiricism; Logical positivists; Logical Positivist; Logical Positivism; Neopositivism; Neo-positivism; Logical positivist; Logical empiricist; Logical Empiricism; Vienna positivism; Protocol statement; Basic statement; Observational statement
Logical positivism, later called logical empiricism, and both of which together are also known as neopositivism, was a movement in Western philosophy whose central thesis was the verification principle (also known as the verifiability criterion of meaning). This theory of knowledge asserted that only statements verifiable through direct observation or logical proof are meaningful in terms of conveying truth value, information or factual content.
Logical schema
REPRESENTATION OF AN ORGANIZATION'S DATA, ORGANIZED IN TERMS OF ENTITIES AND RELATIONSHIPS
Logical schema (version 2); Logical modelling; Logical data model
A logical data model or logical schema is a data model of a specific problem domain expressed independently of a particular database management product or storage technology (physical data model) but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags. This is as opposed to a conceptual data model, which describes the semantics of an organization without reference to technology.
Logical clock
MECHANISM FOR CAPTURING CHRONOLOGICAL AND CAUSAL RELATIONSHIPS
Logical clocks; Logical clock algorithm
A logical clock is a mechanism for capturing chronological and causal relationships in a distributed system. Often, distributed systems may have no physically synchronous global clock.
Negation
OPERATION THAT TAKES A PROPOSITION P TO ANOTHER PROPOSITION "NOT P", WRITTEN ¬P, WHICH IS INTERPRETED INTUITIVELY AS BEING TRUE WHEN P IS FALSE, AND FALSE WHEN P IS TRUE; UNARY (SINGLE-ARGUMENT) LOGICAL CONNECTIVE
Logical not; Not (logic); ¬; Not sign; Negate; Logical NOT; ⌐; Negation sign; Logical negation; Negated; ￢; Logical Complement; Logical complement; Not operator; Logical Negation; ⌙; !vote; Logical opposite; Negation (mathematics); U+00AC; Negation (logic); Quantifier negation; Negation (logics); Negation elimination; ¬
In logic, negation, also called the logical complement, is an operation that takes a proposition P to another proposition "not P", written \neg P, \mathord{\sim} P or \overline{P}. It is interpreted intuitively as being true when P is false, and false when P is true.
negate
OPERATION THAT TAKES A PROPOSITION P TO ANOTHER PROPOSITION "NOT P", WRITTEN ¬P, WHICH IS INTERPRETED INTUITIVELY AS BEING TRUE WHEN P IS FALSE, AND FALSE WHEN P IS TRUE; UNARY (SINGLE-ARGUMENT) LOGICAL CONNECTIVE
Logical not; Not (logic); ¬; Not sign; Negate; Logical NOT; ⌐; Negation sign; Logical negation; Negated; ￢; Logical Complement; Logical complement; Not operator; Logical Negation; ⌙; !vote; Logical opposite; Negation (mathematics); U+00AC; Negation (logic); Quantifier negation; Negation (logics); Negation elimination; ¬
(negates, negating, negated)
1.
If one thing negates another, it causes that other thing to lose the effect or value that it had. (FORMAL)
These weaknesses negated his otherwise progressive attitude towards the staff.
? confirm
VERB: V n
2.
If someone negates something, they say that it does not exist. (FORMAL)
He warned that to negate the results of elections would only make things worse.
? affirm
VERB: V n
negate
OPERATION THAT TAKES A PROPOSITION P TO ANOTHER PROPOSITION "NOT P", WRITTEN ¬P, WHICH IS INTERPRETED INTUITIVELY AS BEING TRUE WHEN P IS FALSE, AND FALSE WHEN P IS TRUE; UNARY (SINGLE-ARGUMENT) LOGICAL CONNECTIVE
Logical not; Not (logic); ¬; Not sign; Negate; Logical NOT; ⌐; Negation sign; Logical negation; Negated; ￢; Logical Complement; Logical complement; Not operator; Logical Negation; ⌙; !vote; Logical opposite; Negation (mathematics); U+00AC; Negation (logic); Quantifier negation; Negation (logics); Negation elimination; ¬
[n?'ge?t]
¦ verb
1. nullify; make ineffective.
2. Logic & Grammar make (a clause, sentence, or proposition) negative in meaning.
3. deny the existence of.
Origin
C17 (earlier (ME) as negation): from L. negat-, negare 'deny'.
negation
OPERATION THAT TAKES A PROPOSITION P TO ANOTHER PROPOSITION "NOT P", WRITTEN ¬P, WHICH IS INTERPRETED INTUITIVELY AS BEING TRUE WHEN P IS FALSE, AND FALSE WHEN P IS TRUE; UNARY (SINGLE-ARGUMENT) LOGICAL CONNECTIVE
Logical not; Not (logic); ¬; Not sign; Negate; Logical NOT; ⌐; Negation sign; Logical negation; Negated; ￢; Logical Complement; Logical complement; Not operator; Logical Negation; ⌙; !vote; Logical opposite; Negation (mathematics); U+00AC; Negation (logic); Quantifier negation; Negation (logics); Negation elimination; ¬
[n?'ge??(?)n]
¦ noun
1. the contradiction or denial of something.
Logic a proposition whose assertion specifically denies the truth of another proposition.
2. the absence or opposite of something actual or positive.
3. Mathematics inversion.
Derivatives
negatory n?'ge?t(?)ri, 'n?g?t(?)ri adjective
logical complement
OPERATION THAT TAKES A PROPOSITION P TO ANOTHER PROPOSITION "NOT P", WRITTEN ¬P, WHICH IS INTERPRETED INTUITIVELY AS BEING TRUE WHEN P IS FALSE, AND FALSE WHEN P IS TRUE; UNARY (SINGLE-ARGUMENT) LOGICAL CONNECTIVE
Logical not; Not (logic); ¬; Not sign; Negate; Logical NOT; ⌐; Negation sign; Logical negation; Negated; ￢; Logical Complement; Logical complement; Not operator; Logical Negation; ⌙; !vote; Logical opposite; Negation (mathematics); U+00AC; Negation (logic); Quantifier negation; Negation (logics); Negation elimination; ¬
<logic> In Boolean algebra, the logical complement or
negation of a Boolean value is the opposite value, given by
the following truth table:
A | -A
--+---
T | F
F | T
-A is also written as A with a bar over it or with a small
vertical line hanging from the right-hand end of the "-"
(LaTeX
eg) or as A'. In the C programming language, it
is !A and in digital circuit design, /A.
(1995-01-24)
Википедия
Well-formed formula
In mathematical logic, propositional logic and predicate logic, a well-formed formula, abbreviated WFF or wff, often simply formula, is a finite sequence of symbols from a given alphabet that is part of a formal language. A formal language can be identified with the set of formulas in the language.
A formula is a syntactic object that can be given a semantic meaning by means of an interpretation. Two key uses of formulas are in propositional logic and predicate logic.
