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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 12398 | . 2 ⊢ 4 ∈ ℂ | |
| 2 | 2cn 12388 | . 2 ⊢ 2 ∈ ℂ | |
| 3 | 4t2e8 12481 | . 2 ⊢ (4 · 2) = 8 | |
| 4 | 1, 2, 3 | mulcomli 11290 | 1 ⊢ (2 · 4) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7408 · cmul 11177 2c2 12367 4c4 12369 8c8 12373 |
| 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 2147 ax-9 2155 ax-ext 2732 ax-resscn 11229 ax-1cn 11230 ax-icn 11231 ax-addcl 11232 ax-mulcl 11234 ax-mulcom 11236 ax-addass 11237 ax-mulass 11238 ax-distr 11239 ax-1rid 11242 ax-cnre 11245 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3901 df-un 3903 df-ss 3915 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-iota 6483 df-fv 6535 df-ov 7411 df-2 12375 df-3 12376 df-4 12377 df-5 12378 df-6 12379 df-7 12380 df-8 12381 |
| This theorem is used by: sq4e2t8 14311 cos2bnd 16324 2exp8 17228 1259lem5 17275 2503lem2 17278 4001lem1 17281 4001lem3 17283 4001lem4 17284 quart1lem 27147 quart1 27148 quartlem1 27149 log2ub 27241 bposlem8 27582 2lgslem3a 27687 2lgsoddprmlem3d 27704 ex-exp 30985 420lcm8e840 42981 lcmineqlem23 43021 3lexlogpow2ineq2 43029 sin5tlem1 47841 fmtno4prmfac 48579 mod42tp1mod8 48609 3exp4mod41 48623 2exp340mod341 48753 8exp8mod9 48756 |
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