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Theorem intnanr 881
Description: Introduction of conjunct inside of a contradiction. (Contributed by NM, 3-Apr-1995.)
Hypothesis
Ref Expression
intnan.1
Assertion
Ref Expression
intnanr

Proof of Theorem intnanr
StepHypRef Expression
1 intnan.1 . 2
2 simpl 443 . 2
31, 2mto 167 1
Colors of variables: wff setvar class
Syntax hints:   wn 3   wa 358
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360
This theorem is referenced by:  falantru  1338  rab0  3571  co02  5092  fnfreclem2  6318
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