ex-or - Intuitionistic Logic Explorer

	Intuitionistic Logic Explorer		< Previous Next > Nearby theorems
Mirrors > Home > ILE Home > Th. List > ex-or		Unicode version

Theorem ex-or 12923

Description: Example for ax-io 698. Example by David A. Wheeler. (Contributed by Mario Carneiro, 9-May-2015.)

**Assertion**
Ref	Expression
ex-or	$\/$

**Proof of Theorem ex-or**
Step	Hyp	Ref	Expression
1		eqid 2137	. 2
2	1	olci 721	1 $\/$

Colors of variables: wff set class

Syntax hints: $\/$ wo 697

wceq 1331

c2 8764

c3 8765

c4 8766

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-gen 1425 ax-ext 2119

This theorem depends on definitions: df-bi 116 df-cleq 2130

This theorem is referenced by: (None)