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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 9049 | 
. . 3
 | |
| 2 | 1 | oveq1i 5932 | 
. 2
 | 
| 3 | 1p1times 8160 | 
. 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 7971 ax-1cn 7972 ax-icn 7974 ax-addcl 7975 ax-mulcl 7977 ax-mulcom 7980 ax-mulass 7982 ax-distr 7983 ax-1rid 7986 ax-cnre 7990 | 
| 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 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-iota 5219 df-fv 5266 df-ov 5925 df-2 9049 | 
| This theorem is referenced by: times2 9119 2timesi 9120 2txmxeqx 9122 2halves 9220 halfaddsub 9225 avglt2 9231 2timesd 9234 expubnd 10688 subsq2 10739 sinmul 11909 sin2t 11914 cos2t 11915 pythagtriplem4 12437 pythagtriplem14 12446 pythagtriplem16 12448 | 
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