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| Mirrors > Home > ILE Home > Th. List > 9p3e12 | GIF version | ||
| Description: 9 + 3 = 12. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9p3e12 | ⊢ (9 + 3) = ;12 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn0 9339 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 9332 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | 1nn0 9331 | . 2 ⊢ 1 ∈ ℕ0 | |
| 4 | df-3 9116 | . 2 ⊢ 3 = (2 + 1) | |
| 5 | df-2 9115 | . 2 ⊢ 2 = (1 + 1) | |
| 6 | 9p2e11 9610 | . 2 ⊢ (9 + 2) = ;11 | |
| 7 | 1, 2, 3, 4, 5, 6 | 6p5lem 9593 | 1 ⊢ (9 + 3) = ;12 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1373 (class class class)co 5957 1c1 7946 + caddc 7948 2c2 9107 3c3 9108 9c9 9114 ;cdc 9524 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-14 2180 ax-ext 2188 ax-sep 4170 ax-pow 4226 ax-pr 4261 ax-setind 4593 ax-cnex 8036 ax-resscn 8037 ax-1cn 8038 ax-1re 8039 ax-icn 8040 ax-addcl 8041 ax-addrcl 8042 ax-mulcl 8043 ax-addcom 8045 ax-mulcom 8046 ax-addass 8047 ax-mulass 8048 ax-distr 8049 ax-i2m1 8050 ax-1rid 8052 ax-0id 8053 ax-rnegex 8054 ax-cnre 8056 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ne 2378 df-ral 2490 df-rex 2491 df-reu 2492 df-rab 2494 df-v 2775 df-sbc 3003 df-dif 3172 df-un 3174 df-in 3176 df-ss 3183 df-pw 3623 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-int 3892 df-br 4052 df-opab 4114 df-id 4348 df-xp 4689 df-rel 4690 df-cnv 4691 df-co 4692 df-dm 4693 df-iota 5241 df-fun 5282 df-fv 5288 df-riota 5912 df-ov 5960 df-oprab 5961 df-mpo 5962 df-sub 8265 df-inn 9057 df-2 9115 df-3 9116 df-4 9117 df-5 9118 df-6 9119 df-7 9120 df-8 9121 df-9 9122 df-n0 9316 df-dec 9525 |
| This theorem is referenced by: 9p4e13 9612 9t8e72 9651 |
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