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| Mirrors > Home > ILE Home > Th. List > mullidi | GIF version | ||
| Description: Identity law for multiplication. (Contributed by NM, 14-Feb-1995.) |
| Ref | Expression |
|---|---|
| axi.1 | ⊢ 𝐴 ∈ ℂ |
| Ref | Expression |
|---|---|
| mullidi | ⊢ (1 · 𝐴) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axi.1 | . 2 ⊢ 𝐴 ∈ ℂ | |
| 2 | mullid 8155 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (1 · 𝐴) = 𝐴 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 ∈ wcel 2200 (class class class)co 6007 ℂcc 8008 1c1 8011 · cmul 8015 |
| 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: halfpm6th 9342 div4p1lem1div2 9376 3halfnz 9555 sq10 10946 fac2 10965 efival 12258 ef01bndlem 12282 3dvdsdec 12391 3dvds2dec 12392 odd2np1lem 12398 m1expo 12426 m1exp1 12427 nno 12432 dec5nprm 12952 2exp8 12973 sin2pim 15502 cos2pim 15503 sincosq3sgn 15517 sincosq4sgn 15518 cosq23lt0 15522 tangtx 15527 sincosq1eq 15528 sincos4thpi 15529 sincos6thpi 15531 abssinper 15535 cosq34lt1 15539 lgsdir2lem1 15722 lgsdir2lem4 15725 lgsdir2lem5 15726 2lgsoddprmlem3c 15803 ex-fl 16144 |
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