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In semantics and pragmatics, a truth condition is the condition under which a sentence is true. For example, "It is snowing in Nebraska" is true precisely when it is snowing in Nebraska. Truth conditions of a sentence do not necessarily reflect current reality. They are merely the conditions under which the statement would be true. [1]
Truth-conditional semantics is an approach to semantics of natural language that sees meaning (or at least the meaning of assertions) as being the same as, or reducible to, their truth conditions. This approach to semantics is principally associated with Donald Davidson , and attempts to carry out for the semantics of natural language what ...
A contemporary semantic definition of truth would define truth for the atomic sentences as follows: An atomic sentence F ( x 1 ,..., x n ) is true (relative to an assignment of values to the variables x 1 , ..., x n )) if the corresponding values of variables bear the relation expressed by the predicate F .
Avicenna elaborated on his definition of truth later in Book VIII, Chapter 6: The truth of a thing is the property of the being of each thing which has been established in it. [75] This definition is but a rendering of the medieval Latin translation of the work by Simone van Riet. [76] A modern translation of the original Arabic text states:
For example, the word “book” can be used to denote an abstract object (e.g., “he is reading the book”) or a concrete one (e.g., “the book is on the chair”); the name “London” can denote at the same time a set of buildings, the air of a place and the character of a population (think to the sentence “London is so gray, polluted ...
This indicates that correspondence is a perfectly valid definition of truth, but is not of itself a valid criterion of truth. An additional test beyond this "definition" is required to determine the precise degree of similarity between what is posited and what exists in objective reality. [7]
Tarski's material adequacy condition, or Convention T, is: a definition of truth for an object language implies all instances of the sentential form (T) S is true if and only if P. where S is replaced by a name of a sentence (in the object language) and P is replaced by a translation of that sentence in the metalanguage.
Ground truth is information that is known to be real or true, provided by direct observation and measurement (i.e. empirical evidence) as opposed to information provided by inference. Etymology [ edit ]