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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 9087 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9140 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9155 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2217 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1364 (class class class)co 5925 + caddc 7901 · cmul 7903 2c2 9060 4c4 9062 8c8 9066 |
| 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 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 ax-resscn 7990 ax-1cn 7991 ax-1re 7992 ax-icn 7993 ax-addcl 7994 ax-addrcl 7995 ax-mulcl 7996 ax-mulcom 7999 ax-addass 8000 ax-mulass 8001 ax-distr 8002 ax-1rid 8005 ax-cnre 8009 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-iota 5220 df-fv 5267 df-ov 5928 df-2 9068 df-3 9069 df-4 9070 df-5 9071 df-6 9072 df-7 9073 df-8 9074 |
| This theorem is referenced by: 8th4div3 9229 4t3e12 9573 sq4e2t8 10748 cu2 10749 sqoddm1div8 10804 cos2bnd 11944 2exp7 12630 2exp8 12631 lgsdir2lem2 15378 2lgslem3a 15442 2lgslem3b 15443 2lgslem3c 15444 2lgslem3d 15445 2lgsoddprmlem2 15455 2lgsoddprmlem3c 15458 2lgsoddprmlem3d 15459 ex-exp 15481 |
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