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Mirrors > Home > MPE Home > Th. List > ringridm | Structured version Visualization version GIF version |
Description: The unit element of a ring is a right 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 |
---|---|
ringridm | ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → (𝑋 · 1 ) = 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 18886 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → (( 1 · 𝑋) = 𝑋 ∧ (𝑋 · 1 ) = 𝑋)) |
5 | 4 | simprd 490 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑋 ∈ 𝐵) → (𝑋 · 1 ) = 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 385 = wceq 1653 ∈ wcel 2157 ‘cfv 6101 (class class class)co 6878 Basecbs 16184 .rcmulr 16268 1rcur 18817 Ringcrg 18863 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1891 ax-4 1905 ax-5 2006 ax-6 2072 ax-7 2107 ax-8 2159 ax-9 2166 ax-10 2185 ax-11 2200 ax-12 2213 ax-13 2377 ax-ext 2777 ax-sep 4975 ax-nul 4983 ax-pow 5035 ax-pr 5097 ax-un 7183 ax-cnex 10280 ax-resscn 10281 ax-1cn 10282 ax-icn 10283 ax-addcl 10284 ax-addrcl 10285 ax-mulcl 10286 ax-mulrcl 10287 ax-mulcom 10288 ax-addass 10289 ax-mulass 10290 ax-distr 10291 ax-i2m1 10292 ax-1ne0 10293 ax-1rid 10294 ax-rnegex 10295 ax-rrecex 10296 ax-cnre 10297 ax-pre-lttri 10298 ax-pre-lttrn 10299 ax-pre-ltadd 10300 ax-pre-mulgt0 10301 |
This theorem depends on definitions: df-bi 199 df-an 386 df-or 875 df-3or 1109 df-3an 1110 df-tru 1657 df-ex 1876 df-nf 1880 df-sb 2065 df-mo 2591 df-eu 2609 df-clab 2786 df-cleq 2792 df-clel 2795 df-nfc 2930 df-ne 2972 df-nel 3075 df-ral 3094 df-rex 3095 df-reu 3096 df-rmo 3097 df-rab 3098 df-v 3387 df-sbc 3634 df-csb 3729 df-dif 3772 df-un 3774 df-in 3776 df-ss 3783 df-pss 3785 df-nul 4116 df-if 4278 df-pw 4351 df-sn 4369 df-pr 4371 df-tp 4373 df-op 4375 df-uni 4629 df-iun 4712 df-br 4844 df-opab 4906 df-mpt 4923 df-tr 4946 df-id 5220 df-eprel 5225 df-po 5233 df-so 5234 df-fr 5271 df-we 5273 df-xp 5318 df-rel 5319 df-cnv 5320 df-co 5321 df-dm 5322 df-rn 5323 df-res 5324 df-ima 5325 df-pred 5898 df-ord 5944 df-on 5945 df-lim 5946 df-suc 5947 df-iota 6064 df-fun 6103 df-fn 6104 df-f 6105 df-f1 6106 df-fo 6107 df-f1o 6108 df-fv 6109 df-riota 6839 df-ov 6881 df-oprab 6882 df-mpt2 6883 df-om 7300 df-wrecs 7645 df-recs 7707 df-rdg 7745 df-er 7982 df-en 8196 df-dom 8197 df-sdom 8198 df-pnf 10365 df-mnf 10366 df-xr 10367 df-ltxr 10368 df-le 10369 df-sub 10558 df-neg 10559 df-nn 11313 df-2 11376 df-ndx 16187 df-slot 16188 df-base 16190 df-sets 16191 df-plusg 16280 df-0g 16417 df-mgm 17557 df-sgrp 17599 df-mnd 17610 df-mgp 18806 df-ur 18818 df-ring 18865 |
This theorem is referenced by: ringidss 18893 ringinvnz1ne0 18908 rngnegr 18911 imasring 18935 opprring 18947 unitmulcl 18980 unitgrp 18983 dvr1 19005 dvrcan1 19007 dvrcan3 19008 subrginv 19114 issubrg2 19118 lidl1el 19541 asclmul2 19663 psrridm 19727 mplcoe1 19788 mplmon2 19815 evlslem1 19837 uvcresum 20457 frlmssuvc2 20459 mamurid 20573 matsc 20582 scmatscmide 20639 mat1scmat 20671 mulmarep1el 20704 mdet0pr 20724 mdetunilem9 20752 mdetuni0 20753 maducoeval2 20772 madugsum 20775 smadiadetglem2 20805 cramerimplem1 20816 cramerimplem1OLD 20817 chpmat1dlem 20968 chpdmatlem3 20973 nrginvrcnlem 22823 lgseisenlem4 25455 ress1r 30305 lfl1sc 35105 eqlkr 35120 eqlkr3 35122 lkrlsp 35123 lcfl7lem 37520 lclkrlem2m 37540 hdmapinvlem3 37941 hdmapglem5 37943 hgmapvvlem1 37944 hdmapglem7b 37949 mgpsumn 42941 |
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