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NOUN | a tautology | tautologies |

mál. klifun {kv} | tautology | ||

unverified mál. sísanna {kv} | tautology |

- tautology
- klifun
`{kv}`mál.

unverified sísanna`{kv}`mál.

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Usage Examples English

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- In the case of simply typed lambda calculus, a type has an inhabitant if and only if its corresponding proposition is a
**tautology**of minimal implicative logic. - In this case, a useful technique is to presume that the formula is not a
**tautology**and attempt to find a valuation which makes it false. - A propositional formula is a
**tautology**if it is true under every valuation (or interpretation) of its predicate symbols. - Negation, Logical biconditional, exclusive or,
**tautology**, and contradiction are linear functions. - In the following truth table the column labelled "taut" for
**tautology**evaluates logical equivalence (symbolized here by ≡) between the two columns labelled d. - Occasionally, two synonymous nouns can form a compound noun, resulting in a
**tautology**. One example is the English word "pathway". - By implying more than is said, it is distinguished from
**tautology**and understatement. - A formula is a
**tautology**of paraconsistent logic if it is true in every valuation which maps atomic propositions to {"t", "b", "f"}. - Strong mathematical theories such as ZFC induce propositional proof systems as well: a proof of a
**tautology**[...] in a propositional interpretation of ZFC is a ZFC-proof of a formalized statement ' [...] is a tautology'. - Warning: (("x"→"y")→"a")→"x" is "not" a
**tautology**. However, [...]→[...] is a tautology.

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