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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
StepHypRef Expression
1 id 22 . 2
21pm4.71i 632 1
Colors of variables: wff setvar class
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
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