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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 9384 | . 2 ⊢ 2 ∈ ℂ | |
| 2 | 1 | mulridi 8334 | 1 ⊢ (2 · 1) = 2 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6088 1c1 8186 · cmul 8190 2c2 9364 |
| 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 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulcom 8286 ax-mulass 8288 ax-distr 8289 ax-1rid 8292 ax-cnre 8296 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-2 9372 |
| This theorem is used by: decbin2 9933 qbtwnrelemcalc 10707 expubnd 11054 trirecip 12293 ege2le3 12463 cos2tsin 12543 cos2bnd 12552 odd2np1 12665 opoe 12687 flodddiv4 12728 pythagtriplem4 13076 sin0pilem2 16009 cos2pi 16031 coskpi 16075 chtublem 16295 bcp1ctr 16306 bclbnd 16307 bposlem1 16311 bposlem2 16312 bposlem5 16315 2lgslem3d1 16424 |
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