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| Mirrors > Home > MPE Home > Th. List > 9t3e27 | Structured version Visualization version 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 12637 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 12630 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | df-3 12413 | . 2 ⊢ 3 = (2 + 1) | |
| 4 | 9t2e18 12948 | . 2 ⊢ (9 · 2) = ;18 | |
| 5 | 1nn0 12629 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | 8nn0 12636 | . . 3 ⊢ 8 ∈ ℕ0 | |
| 7 | eqid 2760 | . . 3 ⊢ ;18 = ;18 | |
| 8 | 1p1e2 12473 | . . 3 ⊢ (1 + 1) = 2 | |
| 9 | 7nn0 12635 | . . 3 ⊢ 7 ∈ ℕ0 | |
| 10 | 1 | nn0cni 12625 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 12625 | . . . 4 ⊢ 8 ∈ ℂ |
| 12 | 9p8e17 12919 | . . . 4 ⊢ (9 + 8) = ;17 | |
| 13 | 10, 11, 12 | addcomli 11509 | . . 3 ⊢ (8 + 9) = ;17 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 12887 | . 2 ⊢ (;18 + 9) = ;27 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 12923 | 1 ⊢ (9 · 3) = ;27 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7424 1c1 11208 · cmul 11212 2c2 12404 3c3 12405 7c7 12409 8c8 12410 9c9 12411 ;cdc 12821 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-2nd 8006 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-er 8725 df-en 8982 df-dom 8983 df-sdom 8984 df-pnf 11352 df-mnf 11353 df-ltxr 11355 df-sub 11550 df-nn 12343 df-2 12412 df-3 12413 df-4 12414 df-5 12415 df-6 12416 df-7 12417 df-8 12418 df-9 12419 df-n0 12614 df-dec 12822 |
| This theorem is used by: 9t4e36 12950 3exp3 17278 prmlem2 17307 631prm 17314 1259lem4 17321 2503lem2 17325 4001lem3 17330 mcubic 27184 log2ublem3 27285 log2ub 27286 3exp7 43240 3lexlogpow2ineq2 43246 257prm 48782 fmtno4nprmfac193 48795 127prm 48820 m11nprm 48822 |
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