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| Mirrors > Home > ILE Home > Th. List > 2t1e2 | GIF version | ||
| Description: 2 times 1 equals 2. (Contributed by David A. Wheeler, 6-Dec-2018.) |
| Ref | Expression |
|---|---|
| 2t1e2 | ⊢ (2 · 1) = 2 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2cn 9377 | . 2 ⊢ 2 ∈ ℂ | |
| 2 | 1 | mulridi 8328 | 1 ⊢ (2 · 1) = 2 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6085 1c1 8180 · cmul 8184 2c2 9357 |
| 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-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 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: decbin2 9926 qbtwnrelemcalc 10700 expubnd 11046 trirecip 12284 ege2le3 12454 cos2tsin 12534 cos2bnd 12543 odd2np1 12656 opoe 12678 flodddiv4 12719 pythagtriplem4 13067 sin0pilem2 15933 cos2pi 15955 coskpi 15999 bcp1ctr 16204 bclbnd 16205 bposlem1 16209 bposlem2 16210 bposlem5 16213 2lgslem3d1 16317 |
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