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Mirrors > Home > ILE Home > Th. List > 7p1e8 | Unicode version |
Description: 7 + 1 = 8. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Ref | Expression |
---|---|
7p1e8 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-8 8104 | . 2 | |
2 | 1 | eqcomi 2085 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1284 (class class class)co 5532 c1 6982 caddc 6984 c7 8094 c8 8095 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-cleq 2074 df-8 8104 |
This theorem is referenced by: 7t4e28 8587 9t9e81 8605 |
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