| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9385 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9438 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9453 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2259 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6085 + caddc 8183 · cmul 8185 2c2 9358 4c4 9360 8c8 9364 |
| This proof depends on 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 8272 ax-1cn 8273 ax-1re 8274 ax-icn 8275 ax-addcl 8276 ax-addrcl 8277 ax-mulcl 8278 ax-mulcom 8281 ax-addass 8282 ax-mulass 8283 ax-distr 8284 ax-1rid 8287 ax-cnre 8291 |
| This proof 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 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 df-2 9366 df-3 9367 df-4 9368 df-5 9369 df-6 9370 df-7 9371 df-8 9372 |
| This theorem is used by: 2t4e8 9468 8th4div3 9529 4t3e12 9884 sq4e2t8 11089 cu2 11090 sqoddm1div8 11146 cos2bnd 12546 2exp7 13237 2exp8 13238 8nprm 13249 19prm 13255 139prm 13261 1259lem2 13266 1259lem3 13267 1259lem4 13268 log2tlbndlog2 16181 log2ublog2 16185 bpos1 16271 bposlem8 16279 lgsdir2lem2 16314 2lgslem3a 16378 2lgslem3b 16379 2lgslem3c 16380 2lgslem3d 16381 2lgsoddprmlem2 16391 2lgsoddprmlem3c 16394 2lgsoddprmlem3d 16395 ex-exp 16907 |
| Copyright terms: Public domain | W3C validator |