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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 12421 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 12474 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 12490 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2784 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7418 + caddc 11196 · cmul 11198 2c2 12390 4c4 12392 8c8 12396 |
| 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 2733 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-mulcl 11255 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-1rid 11263 ax-cnre 11266 |
| 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 2740 df-cleq 2753 df-clel 2836 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-iota 6493 df-fv 6545 df-ov 7421 df-2 12398 df-3 12399 df-4 12400 df-5 12401 df-6 12402 df-7 12403 df-8 12404 |
| This theorem is used by: 2t4e8 12505 8th4div3 12559 4t3e12 12910 cu2 14336 sqoddm1div8 14380 2exp7 17258 8nprm 17282 19prm 17289 139prm 17295 1259lem2 17303 1259lem3 17304 1259lem4 17305 2503lem1 17308 2503lem2 17309 4001lem1 17312 4001lem2 17313 log2tlbnd 27266 log2ub 27270 bpos1 27603 bposlem8 27611 lgsdir2lem2 27646 2lgslem3a 27716 2lgslem3b 27717 2lgslem3c 27718 2lgslem3d 27719 2lgsoddprmlem2 27729 2lgsoddprmlem3c 27732 chebbnd1lem2 27790 chebbnd1lem3 27791 pntlemr 27922 420gcd8e4 43036 420lcm8e840 43041 sum9cubes 43663 sin5tlem4 47891 goldratmolem2 47902 139prmALT 48650 41prothprm 48673 8even 48780 pgnbgreunbgrlem4 49186 |
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