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Mirrors > Home > ILE Home > Th. List > 4p1e5 | Unicode version |
Description: 4 + 1 = 5. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Ref | Expression |
---|---|
4p1e5 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-5 8775 | . 2 | |
2 | 1 | eqcomi 2141 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1331 (class class class)co 5767 c1 7614 caddc 7616 c4 8766 c5 8767 |
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-5 1423 ax-gen 1425 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-cleq 2130 df-5 8775 |
This theorem is referenced by: 8t7e56 9294 9t6e54 9300 ex-exp 12928 ex-fac 12929 |
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