Theorem pm3.3 444

Description: Theorem *3.3 (Exp) of [WhiteheadRussell] p. 112. (Contributed by NM, 3-Jan-2005.) (Proof shortened by Wolf Lammen, 24-Mar-2013.)

Assertion

Ref	Expression
pm3.3

Proof of Theorem pm3.3

Step	Hyp	Ref	Expression
1		id 22	. 2
2	1	expd 436	1

Syntax hints:  ->wi 4  /\wa 369

This theorem is referenced by:  impexp  446  pm4.79  583  mo3OLD  2324  wl-mo3t  30021  trer  30134  trsbc  33311  simplbi2VD  33646  exbirVD  33653  exbiriVD  33654  3impexpVD  33656  trsbcVD  33677  simplbi2comtVD  33688  bj-alanim  34204

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