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| Mirrors > Home > ILE Home > Th. List > 4t2e8 | Unicode version | ||
| Description: 4 times 2 equals 8. (Contributed by NM, 2-Aug-2004.) |
| Ref | Expression |
|---|---|
| 4t2e8 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4cn 9384 |
. . 3
| |
| 2 | 1 | times2i 9437 |
. 2
|
| 3 | 4p4e8 9452 |
. 2
| |
| 4 | 2, 3 | eqtri 2259 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| 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 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-1rid 8286 ax-cnre 8290 |
| 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 9365 df-3 9366 df-4 9367 df-5 9368 df-6 9369 df-7 9370 df-8 9371 |
| This theorem is used by: 2t4e8 9467 8th4div3 9528 4t3e12 9883 sq4e2t8 11087 cu2 11088 sqoddm1div8 11144 cos2bnd 12543 2exp7 13234 2exp8 13235 8nprm 13246 19prm 13252 139prm 13258 1259lem2 13263 1259lem3 13264 1259lem4 13265 log2tlbndlog2 16139 log2ublog2 16143 bpos1 16208 lgsdir2lem2 16246 2lgslem3a 16310 2lgslem3b 16311 2lgslem3c 16312 2lgslem3d 16313 2lgsoddprmlem2 16323 2lgsoddprmlem3c 16326 2lgsoddprmlem3d 16327 ex-exp 16839 |
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