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| Mirrors > Home > ILE Home > Th. List > 4t2e8 | 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 9263 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9316 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9331 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2252 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 (class class class)co 6028 + caddc 8078 · cmul 8080 2c2 9236 4c4 9238 8c8 9242 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-1rid 8182 ax-cnre 8186 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-iota 5293 df-fv 5341 df-ov 6031 df-2 9244 df-3 9245 df-4 9246 df-5 9247 df-6 9248 df-7 9249 df-8 9250 |
| This theorem is referenced by: 8th4div3 9405 4t3e12 9752 sq4e2t8 10945 cu2 10946 sqoddm1div8 11001 cos2bnd 12384 2exp7 13070 2exp8 13071 lgsdir2lem2 15831 2lgslem3a 15895 2lgslem3b 15896 2lgslem3c 15897 2lgslem3d 15898 2lgsoddprmlem2 15908 2lgsoddprmlem3c 15911 2lgsoddprmlem3d 15912 ex-exp 16424 |
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