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| Mirrors > Home > MPE Home > Th. List > 5t4e20 | Structured version Visualization version GIF version | ||
| Description: 5 times 4 equals 20. (Contributed by Mario Carneiro, 19-Apr-2015.) (Revised by AV, 6-Sep-2021.) |
| Ref | Expression |
|---|---|
| 5t4e20 | ⊢ (5 · 4) = ;20 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 5nn0 12631 | . 2 ⊢ 5 ∈ ℕ0 | |
| 2 | 3nn0 12629 | . 2 ⊢ 3 ∈ ℕ0 | |
| 3 | df-4 12412 | . 2 ⊢ 4 = (3 + 1) | |
| 4 | 5t3e15 12925 | . 2 ⊢ (5 · 3) = ;15 | |
| 5 | 1nn0 12627 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | eqid 2760 | . . 3 ⊢ ;15 = ;15 | |
| 7 | 1p1e2 12471 | . . 3 ⊢ (1 + 1) = 2 | |
| 8 | 5p5e10 12895 | . . 3 ⊢ (5 + 5) = ;10 | |
| 9 | 5, 1, 1, 6, 7, 8 | decaddci2 12886 | . 2 ⊢ (;15 + 5) = ;20 |
| 10 | 1, 2, 3, 4, 9 | 4t3lem 12921 | 1 ⊢ (5 · 4) = ;20 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7422 0cc0 11205 1c1 11206 · cmul 11210 2c2 12402 3c3 12403 4c4 12404 5c5 12405 ;cdc 12819 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7753 ax-resscn 11262 ax-1cn 11263 ax-icn 11264 ax-addcl 11265 ax-addrcl 11266 ax-mulcl 11267 ax-mulrcl 11268 ax-mulcom 11269 ax-addass 11270 ax-mulass 11271 ax-distr 11272 ax-i2m1 11273 ax-1ne0 11274 ax-1rid 11275 ax-rnegex 11276 ax-rrecex 11277 ax-cnre 11278 ax-pre-lttri 11279 ax-pre-lttrn 11280 ax-pre-ltadd 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7379 df-ov 7425 df-oprab 7426 df-mpo 7427 df-om 7880 df-2nd 8004 df-frecs 8304 df-wrecs 8335 df-recs 8384 df-rdg 8423 df-er 8722 df-en 8979 df-dom 8980 df-sdom 8981 df-pnf 11350 df-mnf 11351 df-ltxr 11353 df-sub 11548 df-nn 12341 df-2 12410 df-3 12411 df-4 12412 df-5 12413 df-6 12414 df-7 12415 df-8 12416 df-9 12417 df-n0 12612 df-dec 12820 |
| This theorem is used by: 5t5e25 12927 1259lem2 17317 1259lem3 17318 1259lem4 17319 2503lem1 17322 2503lem2 17323 4001lem3 17328 ex-fac 31059 4t5e20 43455 goldratmolem2 48040 41prothprmlem2 48810 |
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