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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 9332 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9385 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9400 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2255 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 (class class class)co 6058 + caddc 8146 · cmul 8148 2c2 9305 4c4 9307 8c8 9311 |
| 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 2216 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-mulcom 8244 ax-addass 8245 ax-mulass 8246 ax-distr 8247 ax-1rid 8250 ax-cnre 8254 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-iota 5317 df-fv 5365 df-ov 6061 df-2 9313 df-3 9314 df-4 9315 df-5 9316 df-6 9317 df-7 9318 df-8 9319 |
| This theorem is referenced by: 8th4div3 9474 4t3e12 9824 sq4e2t8 11023 cu2 11024 sqoddm1div8 11080 cos2bnd 12471 2exp7 13157 2exp8 13158 lgsdir2lem2 16028 2lgslem3a 16092 2lgslem3b 16093 2lgslem3c 16094 2lgslem3d 16095 2lgsoddprmlem2 16105 2lgsoddprmlem3c 16108 2lgsoddprmlem3d 16109 ex-exp 16621 |
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