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Mirrors > Home > MPE Home > Th. List > ex-or | Structured version Visualization version GIF version |
Description: Example for df-or 844. Example by David A. Wheeler. (Contributed by Mario Carneiro, 9-May-2015.) |
Ref | Expression |
---|---|
ex-or | ⊢ (2 = 3 ∨ 4 = 4) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2821 | . 2 ⊢ 4 = 4 | |
2 | 1 | olci 862 | 1 ⊢ (2 = 3 ∨ 4 = 4) |
Colors of variables: wff setvar class |
Syntax hints: ∨ wo 843 = wceq 1533 2c2 11686 3c3 11687 4c4 11688 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-9 2120 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-ex 1777 df-cleq 2814 |
This theorem is referenced by: (None) |
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