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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 9177 | . 2 ⊢ 2 ∈ ℂ | |
| 2 | 1 | mulridi 8144 | 1 ⊢ (2 · 1) = 2 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 (class class class)co 6000 1c1 7996 · cmul 8000 2c2 9157 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8087 ax-1cn 8088 ax-1re 8089 ax-icn 8090 ax-addcl 8091 ax-addrcl 8092 ax-mulcl 8093 ax-mulcom 8096 ax-mulass 8098 ax-distr 8099 ax-1rid 8102 ax-cnre 8106 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-br 4083 df-iota 5277 df-fv 5325 df-ov 6003 df-2 9165 |
| This theorem is referenced by: decbin2 9714 qbtwnrelemcalc 10470 expubnd 10813 trirecip 12007 ege2le3 12177 cos2tsin 12257 cos2bnd 12266 odd2np1 12379 opoe 12401 flodddiv4 12442 pythagtriplem4 12786 sin0pilem2 15450 cos2pi 15472 coskpi 15516 2lgslem3d1 15773 |
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