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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 9068 |
. . 3
| |
| 2 | 1 | oveq1i 5935 |
. 2
|
| 3 | 1p1times 8179 |
. 2
| |
| 4 | 2, 3 | eqtrid 2241 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 ax-resscn 7990 ax-1cn 7991 ax-icn 7993 ax-addcl 7994 ax-mulcl 7996 ax-mulcom 7999 ax-mulass 8001 ax-distr 8002 ax-1rid 8005 ax-cnre 8009 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-iota 5220 df-fv 5267 df-ov 5928 df-2 9068 |
| This theorem is referenced by: times2 9138 2timesi 9139 2txmxeqx 9141 2halves 9239 halfaddsub 9244 avglt2 9250 2timesd 9253 expubnd 10707 subsq2 10758 sinmul 11928 sin2t 11933 cos2t 11934 pythagtriplem4 12464 pythagtriplem14 12473 pythagtriplem16 12475 |
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