pm4.62 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > pm4.62		Structured version Visualization version Unicode version

Theorem pm4.62 435

Description: Theorem *4.62 of [WhiteheadRussell] p. 120. (Contributed by NM, 3-Jan-2005.)

**Assertion**
Ref	Expression
pm4.62	$\/$

**Proof of Theorem pm4.62**
Step	Hyp	Ref	Expression
1		imor 428	1 $\/$

Colors of variables: wff setvar class

Syntax hints:

wn 3

wi 4

wb 196 $\/$ wo 383

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 197 df-or 385

This theorem is referenced by: ianor 509 rb-bijust 1674 frxp 7287 bnj1174 31071 cdleme0nex 35577