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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 12630 | . 2 ⊢ 9 ∈ ℕ0 | |
| 2 | 2nn0 12623 | . 2 ⊢ 2 ∈ ℕ0 | |
| 3 | df-3 12406 | . 2 ⊢ 3 = (2 + 1) | |
| 4 | 9t2e18 12941 | . 2 ⊢ (9 · 2) = ;18 | |
| 5 | 1nn0 12622 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | 8nn0 12629 | . . 3 ⊢ 8 ∈ ℕ0 | |
| 7 | eqid 2761 | . . 3 ⊢ ;18 = ;18 | |
| 8 | 1p1e2 12466 | . . 3 ⊢ (1 + 1) = 2 | |
| 9 | 7nn0 12628 | . . 3 ⊢ 7 ∈ ℕ0 | |
| 10 | 1 | nn0cni 12618 | . . . 4 ⊢ 9 ∈ ℂ |
| 11 | 6 | nn0cni 12618 | . . . 4 ⊢ 8 ∈ ℂ |
| 12 | 9p8e17 12912 | . . . 4 ⊢ (9 + 8) = ;17 | |
| 13 | 10, 11, 12 | addcomli 11502 | . . 3 ⊢ (8 + 9) = ;17 |
| 14 | 5, 6, 1, 7, 8, 9, 13 | decaddci 12880 | . 2 ⊢ (;18 + 9) = ;27 |
| 15 | 1, 2, 3, 4, 14 | 4t3lem 12916 | 1 ⊢ (9 · 3) = ;27 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7420 1c1 11201 · cmul 11205 2c2 12397 3c3 12398 7c7 12402 8c8 12403 9c9 12404 ;cdc 12814 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 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 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-ltxr 11348 df-sub 11543 df-nn 12336 df-2 12405 df-3 12406 df-4 12407 df-5 12408 df-6 12409 df-7 12410 df-8 12411 df-9 12412 df-n0 12607 df-dec 12815 |
| This theorem is used by: 9t4e36 12943 3exp3 17269 prmlem2 17298 631prm 17305 1259lem4 17312 2503lem2 17316 4001lem3 17321 mcubic 27175 log2ublem3 27276 log2ub 27277 3exp7 43103 3lexlogpow2ineq2 43109 257prm 48645 fmtno4nprmfac193 48658 127prm 48683 m11nprm 48685 |
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