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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 9361 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9414 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9429 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2259 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1402 (class class class)co 6075 + caddc 8172 · cmul 8174 2c2 9334 4c4 9336 8c8 9340 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-1rid 8276 ax-cnre 8280 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-iota 5332 df-fv 5380 df-ov 6078 df-2 9342 df-3 9343 df-4 9344 df-5 9345 df-6 9346 df-7 9347 df-8 9348 |
| This theorem is referenced by: 8th4div3 9503 4t3e12 9853 sq4e2t8 11052 cu2 11053 sqoddm1div8 11109 cos2bnd 12505 2exp7 13191 2exp8 13192 lgsdir2lem2 16062 2lgslem3a 16126 2lgslem3b 16127 2lgslem3c 16128 2lgslem3d 16129 2lgsoddprmlem2 16139 2lgsoddprmlem3c 16142 2lgsoddprmlem3d 16143 ex-exp 16655 |
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