Language, Truth and Logic is a 1936 book about meaning by the philosopher Alfred Jules Ayer, in which the author defines, explains, and argues for the...

branch of logic. It is also called propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic. Sometimes...

In logic and mathematics, a truth value, sometimes called a logical value, is a value indicating the relation of a proposition to truth, which in classical...

Logical truth is one of the most fundamental concepts in logic. Broadly speaking, a logical truth is a statement which is true regardless of the truth or falsity...

Fuzzy logic is a form of many-valued logic in which the truth value of variables may be any real number between 0 and 1. It is employed to handle the...

In logic, the semantics of logic or formal semantics is the study of the meaning and interpretation of formal languages, formal systems, and (idealizations...

Truth or verity is the property of being in accord with fact or reality. In everyday language, it is typically ascribed to things that aim to represent...

theory of truth is a theory of truth in the philosophy of language which holds that truth is a property of sentences. The semantic conception of truth, which...

models of logical consequence and logical truth. Philosophical logic is understood to encompass and focus on non-classical logics, although the term has other...

particularly in his books Language, Truth, and Logic (1936) and The Problem of Knowledge (1956). Ayer was educated at Eton College and the University of Oxford...

Philosophy of logic is the area of philosophy that studies the scope and nature of logic. It investigates the philosophical problems raised by logic, such as...

opposed to classical logic, which is a formal theory of truth. It was introduced and so named by Giorgi Japaridze in 2003. In classical logic, formulas represent...

Syntax (logic) Truth Truth value Validity Affine logic Alethic logic Aristotelian logic Boolean logic Buddhist logic Bunched logic Categorical logic Classical...

logic, a truth function is a function that accepts truth values as input and produces a unique truth value as output. In other words: the input and output...

of the language. In propositional logic, they are tautologies. A statement can be called valid, i.e. logical truth, in some systems of logic like in...

internet-based grading service. The name is a pun derived from Language, Truth, and Logic, the philosophy book by A. J. Ayer. On September 2, 2014, there...

there are three truth values indicating true, false, and some third value. This is contrasted with the more commonly known bivalent logics (such as classical...

is a logical truth. Formal logic uses formal languages to express and analyze arguments. They normally have a very limited vocabulary and exact syntactic...

double negation elimination, and the bivalence of truth. Extended logics are logical systems that are based on classical logic and its rules of inference but...

for the meaning of moral language in this kind of unasserted context. This problem assumes that logic only applies to real truth values. Terence Cuneo argues...

attendee at various Vienna Circle meetings since 1933, published Language, Truth and Logic, which imported logical positivism to the English-speaking world...

that a truth is analytic exactly if it can be derived using logic. However, he maintained a distinction between analytic truths (i.e., truths based only...

first-order logic includes propositional logic.: 29–30  The truth of a formula such as "x is a philosopher" depends on which object is denoted by x and on the...

philosophy and logical positivism in the 20th century, the theory was stated vividly by A. J. Ayer in his 1936 book Language, Truth and Logic, but its development...

conjunction, implication, and equivalence. In standard systems of classical logic, these connectives are interpreted as truth functions, though they receive...

formal language. Many formal languages used in mathematics, logic, and theoretical computer science are defined in solely syntactic terms, and as such...

In logic, an infinite-valued logic (or real-valued logic or infinitely-many-valued logic) is a many-valued logic in which truth values comprise a continuous...

In philosophy and logic, a deflationary theory of truth (also semantic deflationism or simply deflationism) is one of a family of theories that all have...

exactly one truth value, either true or false. A logic satisfying this principle is called a two-valued logic or bivalent logic. In formal logic, the principle...

Language. Carnap, R., (1956). Meaning and Necessity: a Study in Semantics and Modal Logic. University of Chicago Press. Collins, John. (2001). Truth Conditions...