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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 12539 | . 2 ⊢ 5 ∈ ℕ0 | |
| 2 | 3nn0 12537 | . 2 ⊢ 3 ∈ ℕ0 | |
| 3 | df-4 12320 | . 2 ⊢ 4 = (3 + 1) | |
| 4 | 5t3e15 12833 | . 2 ⊢ (5 · 3) = ;15 | |
| 5 | 1nn0 12535 | . . 3 ⊢ 1 ∈ ℕ0 | |
| 6 | eqid 2765 | . . 3 ⊢ ;15 = ;15 | |
| 7 | 1p1e2 12379 | . . 3 ⊢ (1 + 1) = 2 | |
| 8 | 5p5e10 12803 | . . 3 ⊢ (5 + 5) = ;10 | |
| 9 | 5, 1, 1, 6, 7, 8 | decaddci2 12794 | . 2 ⊢ (;15 + 5) = ;20 |
| 10 | 1, 2, 3, 4, 9 | 4t3lem 12829 | 1 ⊢ (5 · 4) = ;20 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7419 0cc0 11115 1c1 11116 · cmul 11120 2c2 12310 3c3 12311 4c4 12312 5c5 12313 ;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: 5t5e25 12835 1259lem2 17214 1259lem3 17215 1259lem4 17216 2503lem1 17219 2503lem2 17220 4001lem3 17225 ex-fac 30873 4t5e20 43110 goldratmolem2 47681 41prothprmlem2 48428 |
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