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| Mirrors > Home > MPE Home > Th. List > rhmsubcrngc | Structured version Visualization version GIF version | ||
| Description: The unital ring homomorphisms between unital rings (in a universe) are a subcategory of the category of non-unital rings. (Contributed by AV, 12-Mar-2020.) |
| Ref | Expression |
|---|---|
| rhmsubcrngc.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| rhmsubcrngc.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| rhmsubcrngc.b | ⊢ (𝜑 → 𝐵 = (Ring ∩ 𝑈)) |
| rhmsubcrngc.h | ⊢ (𝜑 → 𝐻 = ( RingHom ↾ (𝐵 × 𝐵))) |
| Ref | Expression |
|---|---|
| rhmsubcrngc | ⊢ (𝜑 → 𝐻 ∈ (Subcat‘𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rhmsubcrngc.u | . . . . 5 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 2 | rhmsubcrngc.b | . . . . 5 ⊢ (𝜑 → 𝐵 = (Ring ∩ 𝑈)) | |
| 3 | eqid 2764 | . . . . . . 7 ⊢ (RngCat‘𝑈) = (RngCat‘𝑈) | |
| 4 | eqid 2764 | . . . . . . 7 ⊢ (Base‘(RngCat‘𝑈)) = (Base‘(RngCat‘𝑈)) | |
| 5 | 3, 4, 1 | rngcbas 20673 | . . . . . 6 ⊢ (𝜑 → (Base‘(RngCat‘𝑈)) = (𝑈 ∩ Rng)) |
| 6 | incom 4163 | . . . . . 6 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 7 | 5, 6 | eqtrdi 2815 | . . . . 5 ⊢ (𝜑 → (Base‘(RngCat‘𝑈)) = (Rng ∩ 𝑈)) |
| 8 | 1, 2, 7 | rhmsscrnghm 20717 | . . . 4 ⊢ (𝜑 → ( RingHom ↾ (𝐵 × 𝐵)) ⊆cat ( RngHom ↾ ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈))))) |
| 9 | rhmsubcrngc.c | . . . . . . . 8 ⊢ 𝐶 = (RngCat‘𝑈) | |
| 10 | 9 | a1i 11 | . . . . . . 7 ⊢ (𝜑 → 𝐶 = (RngCat‘𝑈)) |
| 11 | 10 | fveq2d 6873 | . . . . . 6 ⊢ (𝜑 → (Base‘𝐶) = (Base‘(RngCat‘𝑈))) |
| 12 | 11 | sqxpeqd 5681 | . . . . 5 ⊢ (𝜑 → ((Base‘𝐶) × (Base‘𝐶)) = ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈)))) |
| 13 | 12 | reseq2d 5967 | . . . 4 ⊢ (𝜑 → ( RngHom ↾ ((Base‘𝐶) × (Base‘𝐶))) = ( RngHom ↾ ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈))))) |
| 14 | 8, 13 | breqtrrd 5130 | . . 3 ⊢ (𝜑 → ( RingHom ↾ (𝐵 × 𝐵)) ⊆cat ( RngHom ↾ ((Base‘𝐶) × (Base‘𝐶)))) |
| 15 | rhmsubcrngc.h | . . 3 ⊢ (𝜑 → 𝐻 = ( RingHom ↾ (𝐵 × 𝐵))) | |
| 16 | eqid 2764 | . . . . 5 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 17 | 9, 16, 1 | rngchomfeqhom 20677 | . . . 4 ⊢ (𝜑 → (Homf ‘𝐶) = (Hom ‘𝐶)) |
| 18 | eqid 2764 | . . . . 5 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 19 | 9, 16, 1, 18 | rngchomfval 20674 | . . . 4 ⊢ (𝜑 → (Hom ‘𝐶) = ( RngHom ↾ ((Base‘𝐶) × (Base‘𝐶)))) |
| 20 | 17, 19 | eqtrd 2799 | . . 3 ⊢ (𝜑 → (Homf ‘𝐶) = ( RngHom ↾ ((Base‘𝐶) × (Base‘𝐶)))) |
| 21 | 14, 15, 20 | 3brtr4d 5134 | . 2 ⊢ (𝜑 → 𝐻 ⊆cat (Homf ‘𝐶)) |
| 22 | 9, 1, 2, 15 | rhmsubcrngclem1 20718 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥)) |
| 23 | 9, 1, 2, 15 | rhmsubcrngclem2 20719 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ∀𝑓 ∈ (𝑥𝐻𝑦)∀𝑔 ∈ (𝑦𝐻𝑧)(𝑔(〈𝑥, 𝑦〉(comp‘𝐶)𝑧)𝑓) ∈ (𝑥𝐻𝑧)) |
| 24 | 22, 23 | jca 519 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥) ∧ ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ∀𝑓 ∈ (𝑥𝐻𝑦)∀𝑔 ∈ (𝑦𝐻𝑧)(𝑔(〈𝑥, 𝑦〉(comp‘𝐶)𝑧)𝑓) ∈ (𝑥𝐻𝑧))) |
| 25 | 24 | ralrimiva 3156 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 (((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥) ∧ ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ∀𝑓 ∈ (𝑥𝐻𝑦)∀𝑔 ∈ (𝑦𝐻𝑧)(𝑔(〈𝑥, 𝑦〉(comp‘𝐶)𝑧)𝑓) ∈ (𝑥𝐻𝑧))) |
| 26 | eqid 2764 | . . 3 ⊢ (Homf ‘𝐶) = (Homf ‘𝐶) | |
| 27 | eqid 2764 | . . 3 ⊢ (Id‘𝐶) = (Id‘𝐶) | |
| 28 | eqid 2764 | . . 3 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
| 29 | 9 | rngccat 20686 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| 30 | 1, 29 | syl 17 | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) |
| 31 | incom 4163 | . . . . 5 ⊢ (Ring ∩ 𝑈) = (𝑈 ∩ Ring) | |
| 32 | 2, 31 | eqtrdi 2815 | . . . 4 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Ring)) |
| 33 | 32, 15 | rhmresfn 20700 | . . 3 ⊢ (𝜑 → 𝐻 Fn (𝐵 × 𝐵)) |
| 34 | 26, 27, 28, 30, 33 | issubc2 17871 | . 2 ⊢ (𝜑 → (𝐻 ∈ (Subcat‘𝐶) ↔ (𝐻 ⊆cat (Homf ‘𝐶) ∧ ∀𝑥 ∈ 𝐵 (((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥) ∧ ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ∀𝑓 ∈ (𝑥𝐻𝑦)∀𝑔 ∈ (𝑦𝐻𝑧)(𝑔(〈𝑥, 𝑦〉(comp‘𝐶)𝑧)𝑓) ∈ (𝑥𝐻𝑧))))) |
| 35 | 21, 25, 34 | mpbir2and 723 | 1 ⊢ (𝜑 → 𝐻 ∈ (Subcat‘𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1562 ∈ wcel 2144 ∀wral 3078 ∩ cin 3905 〈cop 4590 class class class wbr 5102 × cxp 5647 ↾ cres 5651 ‘cfv 6523 (class class class)co 7398 Basecbs 17247 Hom chom 17299 compcco 17300 Catccat 17698 Idccid 17699 Homf chomf 17700 ⊆cat cssc 17842 Subcatcsubc 17844 Rngcrng 20200 Ringcrg 20285 RngHom crnghm 20485 RingHom crh 20520 RngCatcrngc 20668 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-rep 5229 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3064 df-ral 3079 df-rex 3089 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5544 df-eprel 5549 df-po 5557 df-so 5558 df-fr 5602 df-we 5604 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-pred 6290 df-ord 6351 df-on 6352 df-lim 6353 df-suc 6354 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-riota 7355 df-ov 7401 df-oprab 7402 df-mpo 7403 df-om 7849 df-1st 7972 df-2nd 7973 df-frecs 8264 df-wrecs 8295 df-recs 8344 df-rdg 8383 df-1o 8439 df-er 8680 df-map 8812 df-pm 8813 df-ixp 8882 df-en 8930 df-dom 8931 df-sdom 8932 df-fin 8933 df-pnf 11220 df-mnf 11221 df-xr 11222 df-ltxr 11223 df-le 11224 df-sub 11418 df-neg 11419 df-nn 12213 df-2 12282 df-3 12283 df-4 12284 df-5 12285 df-6 12286 df-7 12287 df-8 12288 df-9 12289 df-n0 12484 df-z 12571 df-dec 12691 df-uz 12842 df-fz 13515 df-struct 17185 df-sets 17202 df-slot 17220 df-ndx 17232 df-base 17248 df-ress 17269 df-plusg 17301 df-hom 17312 df-cco 17313 df-0g 17472 df-cat 17702 df-cid 17703 df-homf 17704 df-ssc 17845 df-resc 17846 df-subc 17847 df-estrc 18157 df-mgm 18676 df-mgmhm 18728 df-sgrp 18755 df-mnd 18771 df-mhm 18819 df-grp 18980 df-minusg 18981 df-ghm 19256 df-cmn 19824 df-abl 19825 df-mgp 20189 df-rng 20201 df-ur 20234 df-ring 20287 df-rnghm 20487 df-rhm 20523 df-rngc 20669 df-ringc 20698 |
| This theorem is referenced by: (None) |
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