Theorem pm3.4 331

Description: Conjunction implies implication. Theorem *3.4 of [WhiteheadRussell] p. 113.

Assertion

Ref	Expression
pm3.4	|- ((ph /\ ps) -> (ph -> ps))

Proof of Theorem pm3.4

Step	Hyp	Ref	Expression
1		pm3.27 323	. 2 |- ((ph /\ ps) -> ps)
2	1	a1d 12	1 |- ((ph /\ ps) -> (ph -> ps))

Syntax hints:   -> wi 3   /\ wa 223

This theorem is referenced by:  pm5.63 346  abai 479  ibib 590  sbequ1 1178

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7

This theorem depends on definitions:  df-bi 147  df-an 225

Copyright terms: Public domain