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| Mirrors > Home > MPE Home > Th. List > rngccat | Structured version Visualization version GIF version | ||
| Description: The category of non-unital rings is a category. (Contributed by AV, 27-Feb-2020.) (Revised by AV, 9-Mar-2020.) |
| Ref | Expression |
|---|---|
| rngccat.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| Ref | Expression |
|---|---|
| rngccat | ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rngccat.c | . . 3 ⊢ 𝐶 = (RngCat‘𝑈) | |
| 2 | id 22 | . . 3 ⊢ (𝑈 ∈ 𝑉 → 𝑈 ∈ 𝑉) | |
| 3 | eqidd 2734 | . . 3 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 4 | eqidd 2734 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 5 | 1, 2, 3, 4 | rngcval 20537 | . 2 ⊢ (𝑈 ∈ 𝑉 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 6 | eqid 2733 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 7 | eqid 2733 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 8 | eqidd 2734 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → (Rng ∩ 𝑈) = (Rng ∩ 𝑈)) | |
| 9 | incom 4158 | . . . . . . 7 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 11 | 10 | sqxpeqd 5653 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)) = ((Rng ∩ 𝑈) × (Rng ∩ 𝑈))) |
| 12 | 11 | reseq2d 5934 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((Rng ∩ 𝑈) × (Rng ∩ 𝑈)))) |
| 13 | 7, 2, 8, 12 | rnghmsubcsetc 20552 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 14 | 6, 13 | subccat 17759 | . 2 ⊢ (𝑈 ∈ 𝑉 → ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) ∈ Cat) |
| 15 | 5, 14 | eqeltrd 2833 | 1 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2113 ∩ cin 3897 × cxp 5619 ↾ cres 5623 ‘cfv 6488 (class class class)co 7354 Catccat 17574 ↾cat cresc 17719 ExtStrCatcestrc 18032 Rngcrng 20074 RngHom crnghm 20356 RngCatcrngc 20535 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7676 ax-cnex 11071 ax-resscn 11072 ax-1cn 11073 ax-icn 11074 ax-addcl 11075 ax-addrcl 11076 ax-mulcl 11077 ax-mulrcl 11078 ax-mulcom 11079 ax-addass 11080 ax-mulass 11081 ax-distr 11082 ax-i2m1 11083 ax-1ne0 11084 ax-1rid 11085 ax-rnegex 11086 ax-rrecex 11087 ax-cnre 11088 ax-pre-lttri 11089 ax-pre-lttrn 11090 ax-pre-ltadd 11091 ax-pre-mulgt0 11092 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-tp 4582 df-op 4584 df-uni 4861 df-iun 4945 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7311 df-ov 7357 df-oprab 7358 df-mpo 7359 df-om 7805 df-1st 7929 df-2nd 7930 df-frecs 8219 df-wrecs 8250 df-recs 8299 df-rdg 8337 df-1o 8393 df-er 8630 df-map 8760 df-pm 8761 df-ixp 8830 df-en 8878 df-dom 8879 df-sdom 8880 df-fin 8881 df-pnf 11157 df-mnf 11158 df-xr 11159 df-ltxr 11160 df-le 11161 df-sub 11355 df-neg 11356 df-nn 12135 df-2 12197 df-3 12198 df-4 12199 df-5 12200 df-6 12201 df-7 12202 df-8 12203 df-9 12204 df-n0 12391 df-z 12478 df-dec 12597 df-uz 12741 df-fz 13412 df-struct 17062 df-sets 17079 df-slot 17097 df-ndx 17109 df-base 17125 df-ress 17146 df-plusg 17178 df-hom 17189 df-cco 17190 df-0g 17349 df-cat 17578 df-cid 17579 df-homf 17580 df-ssc 17721 df-resc 17722 df-subc 17723 df-estrc 18033 df-mgm 18552 df-mgmhm 18604 df-sgrp 18631 df-mnd 18647 df-mhm 18695 df-grp 18853 df-ghm 19129 df-abl 19699 df-mgp 20063 df-rng 20075 df-rnghm 20358 df-rngc 20536 |
| This theorem is referenced by: rngcsect 20555 rngcinv 20556 rngciso 20557 zrinitorngc 20561 zrtermorngc 20562 zrzeroorngc 20563 rhmsubcrngc 20587 rhmsubc 20608 |
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