Theorem pm4.24 643

Description: Theorem *4.24 of [WhiteheadRussell] p. 117. (Contributed by NM, 11-May-1993.)

Assertion

Ref	Expression
pm4.24

Proof of Theorem pm4.24

Step	Hyp	Ref	Expression
1		id 22	. 2
2	1	pm4.71i 632	1

Syntax hints:  <->wb 184  /\wa 369

This theorem is referenced by:  anidm  644  anabsan  813  nic-ax  1506  sbnf2  2183  euind  3286  reuind  3303  disjprg  4448  wesn  5076  sqrlem5  13080  srg1zr  17180  crngunit  17311  lmodvscl  17529  isclo2  19589  vitalilem1  22017  ercgrg  23908  slmdvscl  27757  prtlem16  30610  bj-ifid1g  37708

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 185  df-an 371