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Mirrors > Home > MPE Home > Th. List > idrhm | Structured version Visualization version GIF version |
Description: The identity homomorphism on a ring. (Contributed by AV, 14-Feb-2020.) |
Ref | Expression |
---|---|
idrhm.b | ⊢ 𝐵 = (Base‘𝑅) |
Ref | Expression |
---|---|
idrhm | ⊢ (𝑅 ∈ Ring → ( I ↾ 𝐵) ∈ (𝑅 RingHom 𝑅)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . . 3 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Ring) | |
2 | 1, 1 | jca 509 | . 2 ⊢ (𝑅 ∈ Ring → (𝑅 ∈ Ring ∧ 𝑅 ∈ Ring)) |
3 | ringgrp 18906 | . . . 4 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp) | |
4 | idrhm.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑅) | |
5 | 4 | idghm 18026 | . . . 4 ⊢ (𝑅 ∈ Grp → ( I ↾ 𝐵) ∈ (𝑅 GrpHom 𝑅)) |
6 | 3, 5 | syl 17 | . . 3 ⊢ (𝑅 ∈ Ring → ( I ↾ 𝐵) ∈ (𝑅 GrpHom 𝑅)) |
7 | eqid 2825 | . . . . 5 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
8 | 7 | ringmgp 18907 | . . . 4 ⊢ (𝑅 ∈ Ring → (mulGrp‘𝑅) ∈ Mnd) |
9 | 7, 4 | mgpbas 18849 | . . . . 5 ⊢ 𝐵 = (Base‘(mulGrp‘𝑅)) |
10 | 9 | idmhm 17697 | . . . 4 ⊢ ((mulGrp‘𝑅) ∈ Mnd → ( I ↾ 𝐵) ∈ ((mulGrp‘𝑅) MndHom (mulGrp‘𝑅))) |
11 | 8, 10 | syl 17 | . . 3 ⊢ (𝑅 ∈ Ring → ( I ↾ 𝐵) ∈ ((mulGrp‘𝑅) MndHom (mulGrp‘𝑅))) |
12 | 6, 11 | jca 509 | . 2 ⊢ (𝑅 ∈ Ring → (( I ↾ 𝐵) ∈ (𝑅 GrpHom 𝑅) ∧ ( I ↾ 𝐵) ∈ ((mulGrp‘𝑅) MndHom (mulGrp‘𝑅)))) |
13 | 7, 7 | isrhm 19077 | . 2 ⊢ (( I ↾ 𝐵) ∈ (𝑅 RingHom 𝑅) ↔ ((𝑅 ∈ Ring ∧ 𝑅 ∈ Ring) ∧ (( I ↾ 𝐵) ∈ (𝑅 GrpHom 𝑅) ∧ ( I ↾ 𝐵) ∈ ((mulGrp‘𝑅) MndHom (mulGrp‘𝑅))))) |
14 | 2, 12, 13 | sylanbrc 580 | 1 ⊢ (𝑅 ∈ Ring → ( I ↾ 𝐵) ∈ (𝑅 RingHom 𝑅)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 386 = wceq 1658 ∈ wcel 2166 I cid 5249 ↾ cres 5344 ‘cfv 6123 (class class class)co 6905 Basecbs 16222 Mndcmnd 17647 MndHom cmhm 17686 Grpcgrp 17776 GrpHom cghm 18008 mulGrpcmgp 18843 Ringcrg 18901 RingHom crh 19068 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1896 ax-4 1910 ax-5 2011 ax-6 2077 ax-7 2114 ax-8 2168 ax-9 2175 ax-10 2194 ax-11 2209 ax-12 2222 ax-13 2391 ax-ext 2803 ax-rep 4994 ax-sep 5005 ax-nul 5013 ax-pow 5065 ax-pr 5127 ax-un 7209 ax-cnex 10308 ax-resscn 10309 ax-1cn 10310 ax-icn 10311 ax-addcl 10312 ax-addrcl 10313 ax-mulcl 10314 ax-mulrcl 10315 ax-mulcom 10316 ax-addass 10317 ax-mulass 10318 ax-distr 10319 ax-i2m1 10320 ax-1ne0 10321 ax-1rid 10322 ax-rnegex 10323 ax-rrecex 10324 ax-cnre 10325 ax-pre-lttri 10326 ax-pre-lttrn 10327 ax-pre-ltadd 10328 ax-pre-mulgt0 10329 |
This theorem depends on definitions: df-bi 199 df-an 387 df-or 881 df-3or 1114 df-3an 1115 df-tru 1662 df-ex 1881 df-nf 1885 df-sb 2070 df-mo 2605 df-eu 2640 df-clab 2812 df-cleq 2818 df-clel 2821 df-nfc 2958 df-ne 3000 df-nel 3103 df-ral 3122 df-rex 3123 df-reu 3124 df-rmo 3125 df-rab 3126 df-v 3416 df-sbc 3663 df-csb 3758 df-dif 3801 df-un 3803 df-in 3805 df-ss 3812 df-pss 3814 df-nul 4145 df-if 4307 df-pw 4380 df-sn 4398 df-pr 4400 df-tp 4402 df-op 4404 df-uni 4659 df-iun 4742 df-br 4874 df-opab 4936 df-mpt 4953 df-tr 4976 df-id 5250 df-eprel 5255 df-po 5263 df-so 5264 df-fr 5301 df-we 5303 df-xp 5348 df-rel 5349 df-cnv 5350 df-co 5351 df-dm 5352 df-rn 5353 df-res 5354 df-ima 5355 df-pred 5920 df-ord 5966 df-on 5967 df-lim 5968 df-suc 5969 df-iota 6086 df-fun 6125 df-fn 6126 df-f 6127 df-f1 6128 df-fo 6129 df-f1o 6130 df-fv 6131 df-riota 6866 df-ov 6908 df-oprab 6909 df-mpt2 6910 df-om 7327 df-wrecs 7672 df-recs 7734 df-rdg 7772 df-er 8009 df-map 8124 df-en 8223 df-dom 8224 df-sdom 8225 df-pnf 10393 df-mnf 10394 df-xr 10395 df-ltxr 10396 df-le 10397 df-sub 10587 df-neg 10588 df-nn 11351 df-2 11414 df-ndx 16225 df-slot 16226 df-base 16228 df-sets 16229 df-plusg 16318 df-0g 16455 df-mgm 17595 df-sgrp 17637 df-mnd 17648 df-mhm 17688 df-grp 17779 df-ghm 18009 df-mgp 18844 df-ur 18856 df-ring 18903 df-rnghom 19071 |
This theorem is referenced by: rhmsubcsetclem1 42868 rhmsubcrngclem1 42874 funcringcsetcALTV2lem7 42889 ringccatidALTV 42899 funcringcsetclem7ALTV 42912 srhmsubc 42923 rhmsubclem3 42935 srhmsubcALTV 42941 rhmsubcALTVlem3 42953 |
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