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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 12468 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 12521 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 12537 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2786 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7451 + caddc 11242 · cmul 11244 2c2 12437 4c4 12439 8c8 12443 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-mulcl 11301 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-1rid 11309 ax-cnre 11312 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-iota 6520 df-fv 6574 df-ov 7454 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 |
| This theorem is used by: 2t4e8 12552 8th4div3 12606 4t3e12 12957 cu2 14383 sqoddm1div8 14428 2exp7 17309 8nprm 17333 19prm 17340 139prm 17346 1259lem2 17354 1259lem3 17355 1259lem4 17356 2503lem1 17359 2503lem2 17360 4001lem1 17363 4001lem2 17364 log2tlbnd 27330 log2ub 27334 bpos1 27667 bposlem8 27675 lgsdir2lem2 27710 2lgslem3a 27780 2lgslem3b 27781 2lgslem3c 27782 2lgslem3d 27783 2lgsoddprmlem2 27793 2lgsoddprmlem3c 27796 chebbnd1lem2 27854 chebbnd1lem3 27855 pntlemr 27986 420gcd8e4 43322 420lcm8e840 43327 sum9cubes 43949 sin5tlem4 48195 goldratmolem2 48206 139prmALT 48954 41prothprm 48977 8even 49084 pgnbgreunbgrlem4 49490 |
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