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Mirrors > Home > MPE Home > Th. List > 7t3e21 | Structured version Visualization version GIF version |
Description: 7 times 3 equals 21. (Contributed by Mario Carneiro, 19-Apr-2015.) |
Ref | Expression |
---|---|
7t3e21 | ⊢ (7 · 3) = ;21 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 7nn0 11901 | . 2 ⊢ 7 ∈ ℕ0 | |
2 | 2nn0 11896 | . 2 ⊢ 2 ∈ ℕ0 | |
3 | df-3 11683 | . 2 ⊢ 3 = (2 + 1) | |
4 | 7t2e14 12189 | . 2 ⊢ (7 · 2) = ;14 | |
5 | 1nn0 11895 | . . 3 ⊢ 1 ∈ ℕ0 | |
6 | 4nn0 11898 | . . 3 ⊢ 4 ∈ ℕ0 | |
7 | eqid 2820 | . . 3 ⊢ ;14 = ;14 | |
8 | 1p1e2 11744 | . . 3 ⊢ (1 + 1) = 2 | |
9 | 1 | nn0cni 11891 | . . . 4 ⊢ 7 ∈ ℂ |
10 | 6 | nn0cni 11891 | . . . 4 ⊢ 4 ∈ ℂ |
11 | 7p4e11 12156 | . . . 4 ⊢ (7 + 4) = ;11 | |
12 | 9, 10, 11 | addcomli 10813 | . . 3 ⊢ (4 + 7) = ;11 |
13 | 5, 6, 1, 7, 8, 5, 12 | decaddci 12141 | . 2 ⊢ (;14 + 7) = ;21 |
14 | 1, 2, 3, 4, 13 | 4t3lem 12177 | 1 ⊢ (7 · 3) = ;21 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 (class class class)co 7137 1c1 10519 · cmul 10523 2c2 11674 3c3 11675 4c4 11676 7c7 11679 ;cdc 12080 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2792 ax-sep 5184 ax-nul 5191 ax-pow 5247 ax-pr 5311 ax-un 7442 ax-resscn 10575 ax-1cn 10576 ax-icn 10577 ax-addcl 10578 ax-addrcl 10579 ax-mulcl 10580 ax-mulrcl 10581 ax-mulcom 10582 ax-addass 10583 ax-mulass 10584 ax-distr 10585 ax-i2m1 10586 ax-1ne0 10587 ax-1rid 10588 ax-rnegex 10589 ax-rrecex 10590 ax-cnre 10591 ax-pre-lttri 10592 ax-pre-lttrn 10593 ax-pre-ltadd 10594 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2653 df-clab 2799 df-cleq 2813 df-clel 2891 df-nfc 2959 df-ne 3012 df-nel 3119 df-ral 3138 df-rex 3139 df-reu 3140 df-rab 3142 df-v 3483 df-sbc 3759 df-csb 3867 df-dif 3922 df-un 3924 df-in 3926 df-ss 3935 df-pss 3937 df-nul 4275 df-if 4449 df-pw 4522 df-sn 4549 df-pr 4551 df-tp 4553 df-op 4555 df-uni 4820 df-iun 4902 df-br 5048 df-opab 5110 df-mpt 5128 df-tr 5154 df-id 5441 df-eprel 5446 df-po 5455 df-so 5456 df-fr 5495 df-we 5497 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6295 df-fun 6338 df-fn 6339 df-f 6340 df-f1 6341 df-fo 6342 df-f1o 6343 df-fv 6344 df-riota 7095 df-ov 7140 df-oprab 7141 df-mpo 7142 df-om 7562 df-wrecs 7928 df-recs 7989 df-rdg 8027 df-er 8270 df-en 8491 df-dom 8492 df-sdom 8493 df-pnf 10658 df-mnf 10659 df-ltxr 10661 df-sub 10853 df-nn 11620 df-2 11682 df-3 11683 df-4 11684 df-5 11685 df-6 11686 df-7 11687 df-8 11688 df-9 11689 df-n0 11880 df-dec 12081 |
This theorem is referenced by: 7t4e28 12191 23prm 16430 prmlem2 16431 83prm 16434 163prm 16436 631prm 16438 1259prm 16447 log2ublem3 25507 log2ub 25508 ex-prmo 28217 hgt750lem2 31925 235t711 39247 ex-decpmul 39248 257prm 43803 |
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