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Mirrors > Home > MPE Home > Th. List > 7t4e28 | Structured version Visualization version GIF version |
Description: 7 times 4 equals 28. (Contributed by Mario Carneiro, 19-Apr-2015.) |
Ref | Expression |
---|---|
7t4e28 | ⊢ (7 · 4) = ;28 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 7nn0 11769 | . 2 ⊢ 7 ∈ ℕ0 | |
2 | 3nn0 11765 | . 2 ⊢ 3 ∈ ℕ0 | |
3 | df-4 11552 | . 2 ⊢ 4 = (3 + 1) | |
4 | 7t3e21 12058 | . 2 ⊢ (7 · 3) = ;21 | |
5 | 2nn0 11764 | . . 3 ⊢ 2 ∈ ℕ0 | |
6 | 1nn0 11763 | . . 3 ⊢ 1 ∈ ℕ0 | |
7 | eqid 2794 | . . 3 ⊢ ;21 = ;21 | |
8 | 7cn 11581 | . . . 4 ⊢ 7 ∈ ℂ | |
9 | ax-1cn 10444 | . . . 4 ⊢ 1 ∈ ℂ | |
10 | 7p1e8 11636 | . . . 4 ⊢ (7 + 1) = 8 | |
11 | 8, 9, 10 | addcomli 10681 | . . 3 ⊢ (1 + 7) = 8 |
12 | 5, 6, 1, 7, 11 | decaddi 12008 | . 2 ⊢ (;21 + 7) = ;28 |
13 | 1, 2, 3, 4, 12 | 4t3lem 12045 | 1 ⊢ (7 · 4) = ;28 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1522 (class class class)co 7019 1c1 10387 · cmul 10391 2c2 11542 3c3 11543 4c4 11544 7c7 11547 8c8 11548 ;cdc 11948 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1778 ax-4 1792 ax-5 1889 ax-6 1948 ax-7 1993 ax-8 2082 ax-9 2090 ax-10 2111 ax-11 2125 ax-12 2140 ax-13 2343 ax-ext 2768 ax-sep 5097 ax-nul 5104 ax-pow 5160 ax-pr 5224 ax-un 7322 ax-resscn 10443 ax-1cn 10444 ax-icn 10445 ax-addcl 10446 ax-addrcl 10447 ax-mulcl 10448 ax-mulrcl 10449 ax-mulcom 10450 ax-addass 10451 ax-mulass 10452 ax-distr 10453 ax-i2m1 10454 ax-1ne0 10455 ax-1rid 10456 ax-rnegex 10457 ax-rrecex 10458 ax-cnre 10459 ax-pre-lttri 10460 ax-pre-lttrn 10461 ax-pre-ltadd 10462 |
This theorem depends on definitions: df-bi 208 df-an 397 df-or 843 df-3or 1081 df-3an 1082 df-tru 1525 df-ex 1763 df-nf 1767 df-sb 2042 df-mo 2575 df-eu 2611 df-clab 2775 df-cleq 2787 df-clel 2862 df-nfc 2934 df-ne 2984 df-nel 3090 df-ral 3109 df-rex 3110 df-reu 3111 df-rab 3113 df-v 3438 df-sbc 3708 df-csb 3814 df-dif 3864 df-un 3866 df-in 3868 df-ss 3876 df-pss 3878 df-nul 4214 df-if 4384 df-pw 4457 df-sn 4475 df-pr 4477 df-tp 4479 df-op 4481 df-uni 4748 df-iun 4829 df-br 4965 df-opab 5027 df-mpt 5044 df-tr 5067 df-id 5351 df-eprel 5356 df-po 5365 df-so 5366 df-fr 5405 df-we 5407 df-xp 5452 df-rel 5453 df-cnv 5454 df-co 5455 df-dm 5456 df-rn 5457 df-res 5458 df-ima 5459 df-pred 6026 df-ord 6072 df-on 6073 df-lim 6074 df-suc 6075 df-iota 6192 df-fun 6230 df-fn 6231 df-f 6232 df-f1 6233 df-fo 6234 df-f1o 6235 df-fv 6236 df-riota 6980 df-ov 7022 df-oprab 7023 df-mpo 7024 df-om 7440 df-wrecs 7801 df-recs 7863 df-rdg 7901 df-er 8142 df-en 8361 df-dom 8362 df-sdom 8363 df-pnf 10526 df-mnf 10527 df-ltxr 10529 df-sub 10721 df-nn 11489 df-2 11550 df-3 11551 df-4 11552 df-5 11553 df-6 11554 df-7 11555 df-8 11556 df-9 11557 df-n0 11748 df-dec 11949 |
This theorem is referenced by: 7t5e35 12060 83prm 16285 317prm 16288 1259prm 16298 hgt750lem2 31532 fmtno5faclem1 43237 |
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