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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 9096 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9149 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9164 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2225 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1372 (class class class)co 5934 + caddc 7910 · cmul 7912 2c2 9069 4c4 9071 8c8 9075 |
| 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 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-ext 2186 ax-resscn 7999 ax-1cn 8000 ax-1re 8001 ax-icn 8002 ax-addcl 8003 ax-addrcl 8004 ax-mulcl 8005 ax-mulcom 8008 ax-addass 8009 ax-mulass 8010 ax-distr 8011 ax-1rid 8014 ax-cnre 8018 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1375 df-nf 1483 df-sb 1785 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-ral 2488 df-rex 2489 df-v 2773 df-un 3169 df-in 3171 df-ss 3178 df-sn 3638 df-pr 3639 df-op 3641 df-uni 3850 df-br 4044 df-iota 5229 df-fv 5276 df-ov 5937 df-2 9077 df-3 9078 df-4 9079 df-5 9080 df-6 9081 df-7 9082 df-8 9083 |
| This theorem is referenced by: 8th4div3 9238 4t3e12 9583 sq4e2t8 10763 cu2 10764 sqoddm1div8 10819 cos2bnd 11990 2exp7 12676 2exp8 12677 lgsdir2lem2 15424 2lgslem3a 15488 2lgslem3b 15489 2lgslem3c 15490 2lgslem3d 15491 2lgsoddprmlem2 15501 2lgsoddprmlem3c 15504 2lgsoddprmlem3d 15505 ex-exp 15527 |
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