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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 9391 |
. . 3
| |
| 2 | 1 | times2i 9444 |
. 2
|
| 3 | 4p4e8 9459 |
. 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 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-1rid 8292 ax-cnre 8296 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-2 9372 df-3 9373 df-4 9374 df-5 9375 df-6 9376 df-7 9377 df-8 9378 |
| This theorem is used by: 2t4e8 9474 8th4div3 9535 4t3e12 9890 sq4e2t8 11095 cu2 11096 sqoddm1div8 11152 cos2bnd 12552 2exp7 13243 2exp8 13244 8nprm 13255 19prm 13261 139prm 13267 1259lem2 13272 1259lem3 13273 1259lem4 13274 log2tlbndlog2 16220 log2ublog2 16224 bpos1 16310 bposlem8 16318 lgsdir2lem2 16353 2lgslem3a 16417 2lgslem3b 16418 2lgslem3c 16419 2lgslem3d 16420 2lgsoddprmlem2 16430 2lgsoddprmlem3c 16433 2lgsoddprmlem3d 16434 ex-exp 16946 |
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