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...

logic. It is also called (first-order) propositional logic, statement logic, sentential calculus, sentential logic, or sometimes zeroth-order logic....

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...

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...

In logic and semantics, the term statement is variously understood to mean either: a meaningful declarative sentence that is true or false, or a proposition...

In logic, the semantics of logic or formal semantics is the study of the semantics, or interpretations, of formal languages and (idealizations of) natural...

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...

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...

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...

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