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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 19323 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → (( 1 · 𝑋) = 𝑋 ∧ (𝑋 · 1 ) = 𝑋)) |
5 | 4 | simpld 497 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → ( 1 · 𝑋) = 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1536 ∈ wcel 2113 ‘cfv 6358 (class class class)co 7159 Basecbs 16486 .rcmulr 16569 1rcur 19254 Ringcrg 19300 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 ax-cnex 10596 ax-resscn 10597 ax-1cn 10598 ax-icn 10599 ax-addcl 10600 ax-addrcl 10601 ax-mulcl 10602 ax-mulrcl 10603 ax-mulcom 10604 ax-addass 10605 ax-mulass 10606 ax-distr 10607 ax-i2m1 10608 ax-1ne0 10609 ax-1rid 10610 ax-rnegex 10611 ax-rrecex 10612 ax-cnre 10613 ax-pre-lttri 10614 ax-pre-lttrn 10615 ax-pre-ltadd 10616 ax-pre-mulgt0 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-nel 3127 df-ral 3146 df-rex 3147 df-reu 3148 df-rmo 3149 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-pss 3957 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-tp 4575 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-tr 5176 df-id 5463 df-eprel 5468 df-po 5477 df-so 5478 df-fr 5517 df-we 5519 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-pred 6151 df-ord 6197 df-on 6198 df-lim 6199 df-suc 6200 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7117 df-ov 7162 df-oprab 7163 df-mpo 7164 df-om 7584 df-wrecs 7950 df-recs 8011 df-rdg 8049 df-er 8292 df-en 8513 df-dom 8514 df-sdom 8515 df-pnf 10680 df-mnf 10681 df-xr 10682 df-ltxr 10683 df-le 10684 df-sub 10875 df-neg 10876 df-nn 11642 df-2 11703 df-ndx 16489 df-slot 16490 df-base 16492 df-sets 16493 df-plusg 16581 df-0g 16718 df-mgm 17855 df-sgrp 17904 df-mnd 17915 df-mgp 19243 df-ur 19255 df-ring 19302 |
This theorem is referenced by: rngo2times 19329 ringidss 19330 ringcom 19332 ring1eq0 19343 ringinvnzdiv 19346 ringnegl 19347 imasring 19372 opprring 19384 dvdsrid 19404 unitmulcl 19417 unitgrp 19420 1rinv 19432 dvreq1 19446 ringinvdv 19447 isdrng2 19515 drngmul0or 19526 isdrngd 19530 subrginv 19554 issubrg2 19558 abv1z 19606 issrngd 19635 sralmod 19962 unitrrg 20069 asclmul1 20117 ascldimulOLD 20120 psrlmod 20184 psrlidm 20186 mplmonmul 20248 evlslem1 20298 coe1pwmul 20450 mulgrhm 20648 mamulid 21053 madetsumid 21073 1mavmul 21160 m1detdiag 21209 mdetralt 21220 mdetunilem7 21230 mdetuni 21234 mdetmul 21235 m2detleib 21243 chfacfpmmulgsum 21475 cpmadugsumlemB 21485 nrginvrcnlem 23303 cphsubrglem 23784 ply1divex 24733 dvdschrmulg 30862 freshmansdream 30863 ress1r 30864 dvrcan5 30868 ornglmullt 30884 orng0le1 30889 isarchiofld 30894 mxidlprm 30981 madjusmdetlem1 31096 matunitlindflem1 34892 lfl0 36205 lfladd 36206 eqlkr3 36241 lcfrlem1 38682 hdmapinvlem4 39061 hdmapglem5 39062 mon1psubm 39812 lidldomn1 44199 invginvrid 44422 ply1sclrmsm 44444 ldepsprlem 44534 |
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