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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 12353 | . 2 ⊢ 4 ∈ ℂ | |
| 2 | 2cn 12343 | . 2 ⊢ 2 ∈ ℂ | |
| 3 | 4t2e8 12436 | . 2 ⊢ (4 · 2) = 8 | |
| 4 | 1, 2, 3 | mulcomli 11245 | 1 ⊢ (2 · 4) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7416 · cmul 11132 2c2 12322 4c4 12324 8c8 12328 |
| 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 2734 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-mulcl 11189 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-1rid 11197 ax-cnre 11200 |
| 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 2741 df-cleq 2754 df-clel 2837 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-iota 6493 df-fv 6545 df-ov 7419 df-2 12330 df-3 12331 df-4 12332 df-5 12333 df-6 12334 df-7 12335 df-8 12336 |
| This theorem is used by: sq4e2t8 14265 cos2bnd 16280 2exp8 17184 1259lem5 17231 2503lem2 17234 4001lem1 17237 4001lem3 17239 4001lem4 17240 quart1lem 27093 quart1 27094 quartlem1 27095 log2ub 27187 bposlem8 27528 2lgslem3a 27633 2lgsoddprmlem3d 27650 ex-exp 30931 420lcm8e840 42879 lcmineqlem23 42919 3lexlogpow2ineq2 42927 sin5tlem1 47739 fmtno4prmfac 48477 mod42tp1mod8 48507 3exp4mod41 48521 2exp340mod341 48651 8exp8mod9 48654 |
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