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Mirrors > Home > MPE Home > Th. List > 8p1e9 | Structured version Visualization version GIF version |
Description: 8 + 1 = 9. (Contributed by Mario Carneiro, 18-Apr-2015.) |
Ref | Expression |
---|---|
8p1e9 | ⊢ (8 + 1) = 9 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-9 11695 | . 2 ⊢ 9 = (8 + 1) | |
2 | 1 | eqcomi 2807 | 1 ⊢ (8 + 1) = 9 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 (class class class)co 7135 1c1 10527 + caddc 10529 8c8 11686 9c9 11687 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 df-cleq 2791 df-9 11695 |
This theorem is referenced by: cos2bnd 15533 19prm 16443 139prm 16449 317prm 16451 1259lem2 16457 1259lem4 16459 1259lem5 16460 1259prm 16461 2503lem1 16462 2503lem2 16463 2503lem3 16464 4001lem1 16466 quartlem1 25443 log2ub 25535 hgt750lem2 32033 lcmineqlem 39340 3cubeslem3l 39627 3cubeslem3r 39628 fmtno5lem3 44072 fmtno5lem4 44073 fmtno4prmfac 44089 fmtno5fac 44099 139prmALT 44113 nfermltl8rev 44260 evengpop3 44316 bgoldbtbndlem1 44323 |
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