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| Mirrors > Home > ILE Home > Th. List > 2times | Unicode version | ||
| Description: Two times a number. (Contributed by NM, 10-Oct-2004.) (Revised by Mario Carneiro, 27-May-2016.) (Proof shortened by AV, 26-Feb-2020.) |
| Ref | Expression |
|---|---|
| 2times |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 9365 |
. . 3
| |
| 2 | 1 | oveq1i 6095 |
. 2
|
| 3 | 1p1times 8461 |
. 2
| |
| 4 | 2, 3 | eqtrid 2283 |
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-icn 8274 ax-addcl 8275 ax-mulcl 8277 ax-mulcom 8280 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 |
| This theorem is used by: times2 9435 2timesi 9436 2txmxeqx 9438 2halves 9538 halfaddsub 9543 avglt2 9549 2timesd 9552 expubnd 11046 subsq2 11097 sinmul 12527 sin2t 12532 cos2t 12533 pythagtriplem4 13067 pythagtriplem14 13076 pythagtriplem16 13078 pellexlem2 16149 |
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