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| Mirrors > Home > ILE Home > Th. List > mulridd | GIF version | ||
| Description: Identity law for multiplication. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| addcld.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| Ref | Expression |
|---|---|
| mulridd | ⊢ (𝜑 → (𝐴 · 1) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addcld.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | mulrid 8330 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝐴 · 1) = 𝐴) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 (class class class)co 6088 ℂcc 8184 1c1 8187 · cmul 8191 |
| 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 8278 ax-1cn 8279 ax-icn 8281 ax-addcl 8282 ax-mulcl 8284 ax-mulcom 8287 ax-mulass 8289 ax-distr 8290 ax-1rid 8293 ax-cnre 8297 |
| 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 4132 df-iota 5340 df-fv 5388 df-ov 6091 |
| This theorem is used by: muladd11 8467 muls1d 8753 ltmul1 8929 mulap0 8991 divrecap 9027 diveqap1 9044 conjmulap 9068 apmul1 9127 qapne 10056 divelunit 10422 modqid 10808 q2submod 10844 addmodlteq 10857 expadd 11040 leexp2r 11052 nnlesq 11102 sqoddm1div8 11153 nn0opthlem1d 11181 faclbnd 11202 faclbnd2 11203 faclbnd6 11205 facavg 11207 bcn0 11216 bcn1 11219 hashf1lem2 11309 hashfac 11311 reccn2ap 12105 hash2iun1dif1 12273 binom11 12279 trireciplem 12293 geosergap 12299 cvgratnnlemnexp 12317 cvgratnnlemmn 12318 fprodsplitdc 12389 efzval 12476 tanaddaplem 12531 tanaddap 12532 cos01gt0 12556 absef 12563 1dvds 12598 bitsfzo 12748 bitsmod 12749 bezoutlema 12802 bezoutlemb 12803 gcdmultiple 12823 sqgcd 12832 lcm1 12885 coprmdvds 12896 qredeu 12901 phiprmpw 13030 coprimeprodsq 13066 pc2dvds 13139 sumhashdc 13156 fldivp1 13157 pcfaclem 13158 prmpwdvds 13164 zsssubrg 15032 mulgrhm2 15055 znrrg 15105 dveflem 15964 plyconst 15983 plycolemc 15996 efper 16046 tangtx 16077 logdivlti 16123 logdivlt 16136 rpcxpmul2 16158 efnthr 16188 relogbexpap 16206 rplogbcxp 16211 birthdaylem3 16239 0sgm 16266 bposlem1 16323 bposlem2 16324 bposlem5 16327 lgsdir2 16369 lgsquad2lem1 16417 lgsquad3 16420 2sqlem6 16456 2sqlem8 16459 trilpolemclim 17304 trilpolemisumle 17306 trilpolemeq1 17308 trilpolemlt1 17309 redcwlpolemeq1 17323 nconstwlpolemgt0 17333 |
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