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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 12332 | . 2 ⊢ 4 ∈ ℂ | |
| 2 | 2cn 12322 | . 2 ⊢ 2 ∈ ℂ | |
| 3 | 4t2e8 12415 | . 2 ⊢ (4 · 2) = 8 | |
| 4 | 1, 2, 3 | mulcomli 11224 | 1 ⊢ (2 · 4) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7412 · cmul 11111 2c2 12301 4c4 12303 8c8 12307 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-mulcl 11168 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-1rid 11176 ax-cnre 11179 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-rex 3089 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-iota 6492 df-fv 6544 df-ov 7415 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 |
| This theorem is used by: sq4e2t8 14242 cos2bnd 16250 2exp8 17154 1259lem5 17201 2503lem2 17204 4001lem1 17207 4001lem3 17209 4001lem4 17210 quart1lem 27031 quart1 27032 quartlem1 27033 log2ub 27125 bposlem8 27466 2lgslem3a 27571 2lgsoddprmlem3d 27588 ex-exp 30812 420lcm8e840 42806 lcmineqlem23 42846 3lexlogpow2ineq2 42854 fmtno4prmfac 48352 mod42tp1mod8 48382 3exp4mod41 48396 2exp340mod341 48526 8exp8mod9 48529 |
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