| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 9t3e27 | GIF version | ||
| Description: 9 times 3 equals 27. (Contributed by Mario Carneiro, 19-Apr-2015.) |
| Ref | Expression |
|---|---|
| 9t3e27 | ⊢ (9 · 3) = ;27 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 9nn0 9428 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 9421 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | df-3 9205 | . 2 ⊢ 3 = (2 + 1) | |
| 4 | 9t2e18 9734 | . 2 ⊢ (9 · 2) = ;18 | |
| 5 | 1nn0 9420 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | 8nn0 9427 | . . 3 ⊢ 8 ∈ ℕ0 | |
| 7 | eqid 2230 | . . 3 ⊢ ;18 = ;18 | |
| 8 | 1p1e2 9262 | . . 3 ⊢ (1 + 1) = 2 | |
| 9 | 7nn0 9426 | . . 3 ⊢ 7 ∈ ℕ0 | |
| 10 | 1 | nn0cni 9416 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 9416 | . . . 4 ⊢ 8 ∈ ℂ |
| 12 | 9p8e17 9705 | . . . 4 ⊢ (9 + 8) = ;17 | |
| 13 | 10, 11, 12 | addcomli 8326 | . . 3 ⊢ (8 + 9) = ;17 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 9673 | . 2 ⊢ (;18 + 9) = ;27 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 9709 | 1 ⊢ (9 · 3) = ;27 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1397 (class class class)co 6020 1c1 8035 · cmul 8039 2c2 9196 3c3 9197 7c7 9201 8c8 9202 9c9 9203 ;cdc 9613 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2204 ax-ext 2212 ax-sep 4206 ax-pow 4263 ax-pr 4298 ax-setind 4634 ax-cnex 8125 ax-resscn 8126 ax-1cn 8127 ax-1re 8128 ax-icn 8129 ax-addcl 8130 ax-addrcl 8131 ax-mulcl 8132 ax-addcom 8134 ax-mulcom 8135 ax-addass 8136 ax-mulass 8137 ax-distr 8138 ax-i2m1 8139 ax-1rid 8141 ax-0id 8142 ax-rnegex 8143 ax-cnre 8145 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-ral 2514 df-rex 2515 df-reu 2516 df-rab 2518 df-v 2803 df-sbc 3031 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-pw 3653 df-sn 3674 df-pr 3675 df-op 3677 df-uni 3893 df-int 3928 df-br 4088 df-opab 4150 df-id 4389 df-xp 4730 df-rel 4731 df-cnv 4732 df-co 4733 df-dm 4734 df-iota 5285 df-fun 5327 df-fv 5333 df-riota 5973 df-ov 6023 df-oprab 6024 df-mpo 6025 df-sub 8354 df-inn 9146 df-2 9204 df-3 9205 df-4 9206 df-5 9207 df-6 9208 df-7 9209 df-8 9210 df-9 9211 df-n0 9405 df-dec 9614 |
| This theorem is referenced by: 9t4e36 9736 3exp3 13031 |
| Copyright terms: Public domain | W3C validator |