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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 12452 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 12445 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | df-3 12236 | . 2 ⊢ 3 = (2 + 1) | |
| 4 | 9t2e18 12757 | . 2 ⊢ (9 · 2) = ;18 | |
| 5 | 1nn0 12444 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | 8nn0 12451 | . . 3 ⊢ 8 ∈ ℕ0 | |
| 7 | eqid 2739 | . . 3 ⊢ ;18 = ;18 | |
| 8 | 1p1e2 12292 | . . 3 ⊢ (1 + 1) = 2 | |
| 9 | 7nn0 12450 | . . 3 ⊢ 7 ∈ ℕ0 | |
| 10 | 1 | nn0cni 12440 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 12440 | . . . 4 ⊢ 8 ∈ ℂ |
| 12 | 9p8e17 12728 | . . . 4 ⊢ (9 + 8) = ;17 | |
| 13 | 10, 11, 12 | addcomli 11329 | . . 3 ⊢ (8 + 9) = ;17 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 12696 | . 2 ⊢ (;18 + 9) = ;27 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 12732 | 1 ⊢ (9 · 3) = ;27 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 (class class class)co 7356 1c1 11030 · cmul 11034 2c2 12227 3c3 12228 7c7 12232 8c8 12233 9c9 12234 ;cdc 12635 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-ltxr 11175 df-sub 11370 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-dec 12636 |
| This theorem is referenced by: 9t4e36 12759 3exp3 17053 prmlem2 17081 631prm 17088 1259lem4 17095 2503lem2 17099 4001lem3 17104 mcubic 26829 log2ublem3 26930 log2ub 26931 3exp7 42538 3lexlogpow2ineq2 42544 257prm 48039 fmtno4nprmfac193 48052 127prm 48077 m11nprm 48079 |
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