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| Mirrors > Home > ILE Home > Th. List > 1t1e1 | Unicode version | ||
| Description: 1 times 1 equals 1. (Contributed by David A. Wheeler, 7-Jul-2016.) |
| Ref | Expression |
|---|---|
| 1t1e1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 8185 |
. 2
| |
| 2 | 1 | mulridi 8241 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 ax-resscn 8184 ax-1cn 8185 ax-icn 8187 ax-addcl 8188 ax-mulcl 8190 ax-mulcom 8193 ax-mulass 8195 ax-distr 8196 ax-1rid 8199 ax-cnre 8203 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-v 2805 df-un 3205 df-in 3207 df-ss 3214 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-iota 5293 df-fv 5341 df-ov 6031 |
| This theorem is referenced by: neg1mulneg1e1 9415 addltmul 9440 1exp 10893 expge1 10901 mulexp 10903 mulexpzap 10904 expaddzap 10908 m1expeven 10911 i4 10967 facp1 11055 binom 12125 prodf1 12183 prodfrecap 12187 fprodmul 12232 fprodrec 12270 fprodge1 12280 rpmul 12750 dvexp 15522 dvef 15538 lgslem3 15821 lgsval2lem 15829 lgsneg 15843 lgsdilem 15846 lgsdir 15854 lgsdi 15856 lgsquad2lem1 15900 lgsquad2lem2 15901 |
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