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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-2 9041 |
. . 3
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2 | 1 | oveq1i 5928 |
. 2
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3 | 1p1times 8153 |
. 2
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4 | 2, 3 | eqtrid 2238 |
1
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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 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 ax-resscn 7964 ax-1cn 7965 ax-icn 7967 ax-addcl 7968 ax-mulcl 7970 ax-mulcom 7973 ax-mulass 7975 ax-distr 7976 ax-1rid 7979 ax-cnre 7983 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-v 2762 df-un 3157 df-in 3159 df-ss 3166 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-br 4030 df-iota 5215 df-fv 5262 df-ov 5921 df-2 9041 |
This theorem is referenced by: times2 9111 2timesi 9112 2halves 9211 halfaddsub 9216 avglt2 9222 2timesd 9225 expubnd 10667 subsq2 10718 sinmul 11887 sin2t 11892 cos2t 11893 pythagtriplem4 12406 pythagtriplem14 12415 pythagtriplem16 12417 |
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