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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 12543 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 12536 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | df-3 12319 | . 2 ⊢ 3 = (2 + 1) | |
| 4 | 9t2e18 12854 | . 2 ⊢ (9 · 2) = ;18 | |
| 5 | 1nn0 12535 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | 8nn0 12542 | . . 3 ⊢ 8 ∈ ℕ0 | |
| 7 | eqid 2765 | . . 3 ⊢ ;18 = ;18 | |
| 8 | 1p1e2 12379 | . . 3 ⊢ (1 + 1) = 2 | |
| 9 | 7nn0 12541 | . . 3 ⊢ 7 ∈ ℕ0 | |
| 10 | 1 | nn0cni 12531 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 12531 | . . . 4 ⊢ 8 ∈ ℂ |
| 12 | 9p8e17 12825 | . . . 4 ⊢ (9 + 8) = ;17 | |
| 13 | 10, 11, 12 | addcomli 11417 | . . 3 ⊢ (8 + 9) = ;17 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 12793 | . 2 ⊢ (;18 + 9) = ;27 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 12829 | 1 ⊢ (9 · 3) = ;27 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 1c1 11116 · cmul 11120 2c2 12310 3c3 12311 7c7 12315 8c8 12316 9c9 12317 ;cdc 12727 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11260 df-mnf 11261 df-ltxr 11263 df-sub 11458 df-nn 12249 df-2 12318 df-3 12319 df-4 12320 df-5 12321 df-6 12322 df-7 12323 df-8 12324 df-9 12325 df-n0 12520 df-dec 12728 |
| This theorem is used by: 9t4e36 12856 3exp3 17173 prmlem2 17202 631prm 17209 1259lem4 17216 2503lem2 17220 4001lem3 17225 mcubic 27063 log2ublem3 27164 log2ub 27165 3exp7 42878 3lexlogpow2ineq2 42884 257prm 48371 fmtno4nprmfac193 48384 127prm 48409 m11nprm 48411 |
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