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| Mirrors > Home > MPE Home > Th. List > 2t4e8 | Structured version Visualization version GIF version | ||
| Description: 2 times 4 equals 8. (Contributed by Umit Teoman Dogan, 10-Jun-2026.) |
| Ref | Expression |
|---|---|
| 2t4e8 | ⊢ (2 · 4) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4cn 12429 | . 2 ⊢ 4 ∈ ℂ | |
| 2 | 2cn 12419 | . 2 ⊢ 2 ∈ ℂ | |
| 3 | 4t2e8 12512 | . 2 ⊢ (4 · 2) = 8 | |
| 4 | 1, 2, 3 | mulcomli 11319 | 1 ⊢ (2 · 4) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7420 · cmul 11206 2c2 12398 4c4 12400 8c8 12404 |
| 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-ext 2732 ax-resscn 11258 ax-1cn 11259 ax-icn 11260 ax-addcl 11261 ax-mulcl 11263 ax-mulcom 11265 ax-addass 11266 ax-mulass 11267 ax-distr 11268 ax-1rid 11271 ax-cnre 11274 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-un 4151 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-iota 6494 df-fv 6546 df-ov 7423 df-2 12406 df-3 12407 df-4 12408 df-5 12409 df-6 12410 df-7 12411 df-8 12412 |
| This theorem is used by: sq4e2t8 14343 cos2bnd 16357 2exp8 17267 1259lem5 17314 2503lem2 17317 4001lem1 17320 4001lem3 17322 4001lem4 17323 quart1lem 27184 quart1 27185 quartlem1 27186 log2ub 27278 bposlem8 27619 2lgslem3a 27724 2lgsoddprmlem3d 27741 ex-exp 31052 420lcm8e840 43137 lcmineqlem23 43177 3lexlogpow2ineq2 43185 sin5tlem1 47995 fmtno4prmfac 48733 mod42tp1mod8 48763 3exp4mod41 48777 2exp340mod341 48907 8exp8mod9 48910 |
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