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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 8103 |
. 2
| |
| 2 | 1 | mulridi 8159 |
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 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 8102 ax-1cn 8103 ax-icn 8105 ax-addcl 8106 ax-mulcl 8108 ax-mulcom 8111 ax-mulass 8113 ax-distr 8114 ax-1rid 8117 ax-cnre 8121 |
| 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 3889 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 |
| This theorem is referenced by: neg1mulneg1e1 9334 addltmul 9359 1exp 10802 expge1 10810 mulexp 10812 mulexpzap 10813 expaddzap 10817 m1expeven 10820 i4 10876 facp1 10964 binom 12011 prodf1 12069 prodfrecap 12073 fprodmul 12118 fprodrec 12156 fprodge1 12166 rpmul 12636 dvexp 15401 dvef 15417 lgslem3 15697 lgsval2lem 15705 lgsneg 15719 lgsdilem 15722 lgsdir 15730 lgsdi 15732 lgsquad2lem1 15776 lgsquad2lem2 15777 |
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