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Mirrors > Home > ILE Home > Th. List > 6p1e7 | Unicode version |
Description: 6 + 1 = 7. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Ref | Expression |
---|---|
6p1e7 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-7 8103 | . 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 c6 8093 c7 8094 |
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-7 8103 |
This theorem is referenced by: 9t8e72 8604 |
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