Philosophy Lexicon of Arguments

General validity: within a calculus a formula that is satisfied by any interpretation (variable assignment with expressions for objects) is valid. See also satisfaction, satisfiability, interpretation.

Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

Author Item Excerpt Meta data

Books on Amazon
I 85
not valid / valid / Mates: E.g. Fa - V x Fa. - - (Fa > Ga)> (~Fa > ~ Ga) - - (x) (Ey) Fxy> (Ey) (x) Fxy - here you can specify interpretations, where the statements are false - Valid: j is valid if j is a consequence of the empty set - I 88 trivially true, since L has not got any elements.

Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution.

Mate I
B. Mates
Elementare Logik Göttingen 1969

Mate II
B. Mates
0226509869 1981

> Counter arguments against Mates

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Ed. Martin Schulz, access date 2017-08-20