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| Mirrors > Home > MPE Home > Th. List > 4t2e8 | Structured version Visualization version GIF version | ||
| Description: 4 times 2 equals 8. (Contributed by NM, 2-Aug-2004.) |
| Ref | Expression |
|---|---|
| 4t2e8 | ⊢ (4 · 2) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4cn 12433 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 12486 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 12502 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2783 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 (class class class)co 7422 + caddc 11208 · cmul 11210 2c2 12402 4c4 12404 8c8 12408 |
| 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 11262 ax-1cn 11263 ax-icn 11264 ax-addcl 11265 ax-mulcl 11267 ax-mulcom 11269 ax-addass 11270 ax-mulass 11271 ax-distr 11272 ax-1rid 11275 ax-cnre 11278 |
| 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 3897 df-dif 4046 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-iota 6496 df-fv 6549 df-ov 7425 df-2 12410 df-3 12411 df-4 12412 df-5 12413 df-6 12414 df-7 12415 df-8 12416 |
| This theorem is used by: 2t4e8 12517 8th4div3 12571 4t3e12 12922 cu2 14348 sqoddm1div8 14392 2exp7 17272 8nprm 17296 19prm 17303 139prm 17309 1259lem2 17317 1259lem3 17318 1259lem4 17319 2503lem1 17322 2503lem2 17323 4001lem1 17326 4001lem2 17327 log2tlbnd 27280 log2ub 27284 bpos1 27617 bposlem8 27625 lgsdir2lem2 27660 2lgslem3a 27730 2lgslem3b 27731 2lgslem3c 27732 2lgslem3d 27733 2lgsoddprmlem2 27743 2lgsoddprmlem3c 27746 chebbnd1lem2 27804 chebbnd1lem3 27805 pntlemr 27936 420gcd8e4 43163 420lcm8e840 43168 sum9cubes 43790 sin5tlem4 48029 goldratmolem2 48040 139prmALT 48788 41prothprm 48811 8even 48918 pgnbgreunbgrlem4 49324 |
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