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| Mirrors > Home > ILE Home > Th. List > 9t5e45 | GIF version | ||
| Description: 9 times 5 equals 45. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9t5e45 | ⊢ (9 · 5) = ;45 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn0 9416 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 4nn0 9411 | . 2 ⊢ 4 ∈ ℕ0 | |
| 3 | df-5 9195 | . 2 ⊢ 5 = (4 + 1) | |
| 4 | 9t4e36 9724 | . 2 ⊢ (9 · 4) = ;36 | |
| 5 | 3nn0 9410 | . . 3 ⊢ 3 ∈ ℕ0 | |
| 6 | 6nn0 9413 | . . 3 ⊢ 6 ∈ ℕ0 | |
| 7 | eqid 2229 | . . 3 ⊢ ;36 = ;36 | |
| 8 | 3p1e4 9269 | . . 3 ⊢ (3 + 1) = 4 | |
| 9 | 5nn0 9412 | . . 3 ⊢ 5 ∈ ℕ0 | |
| 10 | 1 | nn0cni 9404 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 9404 | . . . 4 ⊢ 6 ∈ ℂ |
| 12 | 9p6e15 9691 | . . . 4 ⊢ (9 + 6) = ;15 | |
| 13 | 10, 11, 12 | addcomli 8314 | . . 3 ⊢ (6 + 9) = ;15 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 9661 | . 2 ⊢ (;36 + 9) = ;45 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 9697 | 1 ⊢ (9 · 5) = ;45 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 (class class class)co 6013 1c1 8023 · cmul 8027 3c3 9185 4c4 9186 5c5 9187 6c6 9188 9c9 9191 ;cdc 9601 |
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-mulcom 8123 ax-addass 8124 ax-mulass 8125 ax-distr 8126 ax-i2m1 8127 ax-1rid 8129 ax-0id 8130 ax-rnegex 8131 ax-cnre 8133 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-br 4087 df-opab 4149 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-iota 5284 df-fun 5326 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-sub 8342 df-inn 9134 df-2 9192 df-3 9193 df-4 9194 df-5 9195 df-6 9196 df-7 9197 df-8 9198 df-9 9199 df-n0 9393 df-dec 9602 |
| This theorem is referenced by: 9t6e54 9726 |
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