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Mirrors > Home > MPE Home > Th. List > ringlidm | Structured version Visualization version GIF version |
Description: The unit element of a ring is a left multiplicative identity. (Contributed by NM, 15-Sep-2011.) |
Ref | Expression |
---|---|
rngidm.b | ⊢ 𝐵 = (Base‘𝑅) |
rngidm.t | ⊢ · = (.r‘𝑅) |
rngidm.u | ⊢ 1 = (1r‘𝑅) |
Ref | Expression |
---|---|
ringlidm | ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → ( 1 · 𝑋) = 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rngidm.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
2 | rngidm.t | . . 3 ⊢ · = (.r‘𝑅) | |
3 | rngidm.u | . . 3 ⊢ 1 = (1r‘𝑅) | |
4 | 1, 2, 3 | ringidmlem 19316 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → (( 1 · 𝑋) = 𝑋 ∧ (𝑋 · 1 ) = 𝑋)) |
5 | 4 | simpld 498 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → ( 1 · 𝑋) = 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ‘cfv 6324 (class class class)co 7135 Basecbs 16475 .rcmulr 16558 1rcur 19244 Ringcrg 19290 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-plusg 16570 df-0g 16707 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-mgp 19233 df-ur 19245 df-ring 19292 |
This theorem is referenced by: rngo2times 19322 ringidss 19323 ringcom 19325 ring1eq0 19336 ringinvnzdiv 19339 ringnegl 19340 imasring 19365 opprring 19377 dvdsrid 19397 unitmulcl 19410 unitgrp 19413 1rinv 19425 dvreq1 19439 ringinvdv 19440 isdrng2 19505 drngmul0or 19516 isdrngd 19520 subrginv 19544 issubrg2 19548 abv1z 19596 issrngd 19625 sralmod 19952 unitrrg 20059 mulgrhm 20191 asclmul1 20571 ascldimulOLD 20574 psrlmod 20639 psrlidm 20641 mplmonmul 20704 evlslem1 20754 coe1pwmul 20908 mamulid 21046 madetsumid 21066 1mavmul 21153 m1detdiag 21202 mdetralt 21213 mdetunilem7 21223 mdetuni 21227 mdetmul 21228 m2detleib 21236 chfacfpmmulgsum 21469 cpmadugsumlemB 21479 nrginvrcnlem 23297 cphsubrglem 23782 ply1divex 24737 dvdschrmulg 30908 freshmansdream 30909 ress1r 30911 dvrcan5 30915 ornglmullt 30931 orng0le1 30936 isarchiofld 30941 elrspunidl 31014 mxidlprm 31048 madjusmdetlem1 31180 matunitlindflem1 35053 lfl0 36361 lfladd 36362 eqlkr3 36397 lcfrlem1 38838 hdmapinvlem4 39217 hdmapglem5 39218 mon1psubm 40150 lidldomn1 44545 invginvrid 44769 ply1sclrmsm 44791 ldepsprlem 44881 |
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