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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 12337 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 12390 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 12406 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2788 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7416 + caddc 11114 · cmul 11116 2c2 12306 4c4 12308 8c8 12312 |
| 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 2148 ax-9 2156 ax-ext 2737 ax-resscn 11168 ax-1cn 11169 ax-icn 11170 ax-addcl 11171 ax-mulcl 11173 ax-mulcom 11175 ax-addass 11176 ax-mulass 11177 ax-distr 11178 ax-1rid 11181 ax-cnre 11184 |
| 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 2744 df-cleq 2757 df-clel 2840 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-iota 6496 df-fv 6548 df-ov 7419 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 df-7 12319 df-8 12320 |
| This theorem is used by: 2t4e8 12421 8th4div3 12475 4t3e12 12826 cu2 14250 sqoddm1div8 14293 2exp7 17165 8nprm 17189 19prm 17196 139prm 17202 1259lem2 17210 1259lem3 17211 1259lem4 17212 2503lem1 17215 2503lem2 17216 4001lem1 17219 4001lem2 17220 log2tlbnd 27141 log2ub 27145 bpos1 27478 bposlem8 27486 lgsdir2lem2 27521 2lgslem3a 27591 2lgslem3b 27592 2lgslem3c 27593 2lgslem3d 27594 2lgsoddprmlem2 27604 2lgsoddprmlem3c 27607 chebbnd1lem2 27665 chebbnd1lem3 27666 pntlemr 27797 420gcd8e4 42806 420lcm8e840 42811 sum9cubes 43437 sin5tlem4 47646 goldratmolem2 47656 139prmALT 48381 41prothprm 48404 8even 48511 pgnbgreunbgrlem4 48917 |
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