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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 7899 | . 2 ⊢ 1 ∈ ℂ | |
2 | 1 | mulid1i 7954 | 1 ⊢ (1 · 1) = 1 |
Colors of variables: wff set class |
Syntax hints: = wceq 1353 (class class class)co 5870 1c1 7807 · cmul 7811 |
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 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 ax-resscn 7898 ax-1cn 7899 ax-icn 7901 ax-addcl 7902 ax-mulcl 7904 ax-mulcom 7907 ax-mulass 7909 ax-distr 7910 ax-1rid 7913 ax-cnre 7917 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2739 df-un 3133 df-in 3135 df-ss 3142 df-sn 3598 df-pr 3599 df-op 3601 df-uni 3809 df-br 4002 df-iota 5175 df-fv 5221 df-ov 5873 |
This theorem is referenced by: neg1mulneg1e1 9125 addltmul 9149 1exp 10542 expge1 10550 mulexp 10552 mulexpzap 10553 expaddzap 10557 m1expeven 10560 i4 10615 facp1 10701 binom 11483 prodf1 11541 prodfrecap 11545 fprodmul 11590 fprodrec 11628 fprodge1 11638 rpmul 12088 dvexp 13957 dvef 13970 lgslem3 14185 lgsval2lem 14193 lgsneg 14207 lgsdilem 14210 lgsdir 14218 lgsdi 14220 |
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