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| Mirrors > Home > ILE Home > Th. List > 1t1e1 | GIF version | ||
| Description: 1 times 1 equals 1. (Contributed by David A. Wheeler, 7-Jul-2016.) |
| Ref | Expression |
|---|---|
| 1t1e1 | ⊢ (1 · 1) = 1 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 8273 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | 1 | mulridi 8329 | 1 ⊢ (1 · 1) = 1 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 (class class class)co 6085 1c1 8181 · cmul 8185 |
| 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 8272 ax-1cn 8273 ax-icn 8275 ax-addcl 8276 ax-mulcl 8278 ax-mulcom 8281 ax-mulass 8283 ax-distr 8284 ax-1rid 8287 ax-cnre 8291 |
| 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 |
| This theorem is used by: neg1mulneg1e1 9522 addltmul 9547 1exp 11020 expge1 11028 mulexp 11030 mulexpzap 11031 expaddzap 11035 m1expeven 11038 i4 11094 facp1 11184 hashf1 11303 binom 12270 prodf1 12328 prodfrecap 12332 fprodmul 12377 fprodrec 12415 fprodge1 12425 rpmul 12895 dvexp 15903 dvef 15919 lgslem3 16287 lgsval2lem 16295 lgsneg 16309 lgsdilem 16312 lgsdir 16320 lgsdi 16322 lgsquad2lem1 16366 lgsquad2lem2 16367 |
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