Contradiction (inconsistency)
From Encyclopedia of Mathematics
A formula 
of the language of pure (or narrow) predicate calculus that is false in all models of this language. A formula 
is a contradiction if and only if 
is derivable in pure predicate calculus.
How to Cite This Entry:
Contradiction (inconsistency). V.N. Grishin (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Contradiction_(inconsistency)&oldid=13012
Contradiction (inconsistency). V.N. Grishin (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Contradiction_(inconsistency)&oldid=13012
This text originally appeared in Encyclopedia of Mathematics - ISBN 1402006098