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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 2732 | . . 3 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 4 | eqidd 2732 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 5 | 1, 2, 3, 4 | rngcval 20534 | . 2 ⊢ (𝑈 ∈ 𝑉 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 6 | eqid 2731 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 7 | eqid 2731 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 8 | eqidd 2732 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → (Rng ∩ 𝑈) = (Rng ∩ 𝑈)) | |
| 9 | incom 4159 | . . . . . . 7 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 11 | 10 | sqxpeqd 5648 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)) = ((Rng ∩ 𝑈) × (Rng ∩ 𝑈))) |
| 12 | 11 | reseq2d 5928 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((Rng ∩ 𝑈) × (Rng ∩ 𝑈)))) |
| 13 | 7, 2, 8, 12 | rnghmsubcsetc 20549 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 14 | 6, 13 | subccat 17755 | . 2 ⊢ (𝑈 ∈ 𝑉 → ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) ∈ Cat) |
| 15 | 5, 14 | eqeltrd 2831 | 1 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2111 ∩ cin 3901 × cxp 5614 ↾ cres 5618 ‘cfv 6481 (class class class)co 7346 Catccat 17570 ↾cat cresc 17715 ExtStrCatcestrc 18028 Rngcrng 20071 RngHom crnghm 20353 RngCatcrngc 20532 |
| 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 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-rep 5217 ax-sep 5234 ax-nul 5244 ax-pow 5303 ax-pr 5370 ax-un 7668 ax-cnex 11062 ax-resscn 11063 ax-1cn 11064 ax-icn 11065 ax-addcl 11066 ax-addrcl 11067 ax-mulcl 11068 ax-mulrcl 11069 ax-mulcom 11070 ax-addass 11071 ax-mulass 11072 ax-distr 11073 ax-i2m1 11074 ax-1ne0 11075 ax-1rid 11076 ax-rnegex 11077 ax-rrecex 11078 ax-cnre 11079 ax-pre-lttri 11080 ax-pre-lttrn 11081 ax-pre-ltadd 11082 ax-pre-mulgt0 11083 |
| 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 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4476 df-pw 4552 df-sn 4577 df-pr 4579 df-tp 4581 df-op 4583 df-uni 4860 df-iun 4943 df-br 5092 df-opab 5154 df-mpt 5173 df-tr 5199 df-id 5511 df-eprel 5516 df-po 5524 df-so 5525 df-fr 5569 df-we 5571 df-xp 5622 df-rel 5623 df-cnv 5624 df-co 5625 df-dm 5626 df-rn 5627 df-res 5628 df-ima 5629 df-pred 6248 df-ord 6309 df-on 6310 df-lim 6311 df-suc 6312 df-iota 6437 df-fun 6483 df-fn 6484 df-f 6485 df-f1 6486 df-fo 6487 df-f1o 6488 df-fv 6489 df-riota 7303 df-ov 7349 df-oprab 7350 df-mpo 7351 df-om 7797 df-1st 7921 df-2nd 7922 df-frecs 8211 df-wrecs 8242 df-recs 8291 df-rdg 8329 df-1o 8385 df-er 8622 df-map 8752 df-pm 8753 df-ixp 8822 df-en 8870 df-dom 8871 df-sdom 8872 df-fin 8873 df-pnf 11148 df-mnf 11149 df-xr 11150 df-ltxr 11151 df-le 11152 df-sub 11346 df-neg 11347 df-nn 12126 df-2 12188 df-3 12189 df-4 12190 df-5 12191 df-6 12192 df-7 12193 df-8 12194 df-9 12195 df-n0 12382 df-z 12469 df-dec 12589 df-uz 12733 df-fz 13408 df-struct 17058 df-sets 17075 df-slot 17093 df-ndx 17105 df-base 17121 df-ress 17142 df-plusg 17174 df-hom 17185 df-cco 17186 df-0g 17345 df-cat 17574 df-cid 17575 df-homf 17576 df-ssc 17717 df-resc 17718 df-subc 17719 df-estrc 18029 df-mgm 18548 df-mgmhm 18600 df-sgrp 18627 df-mnd 18643 df-mhm 18691 df-grp 18849 df-ghm 19126 df-abl 19696 df-mgp 20060 df-rng 20072 df-rnghm 20355 df-rngc 20533 |
| This theorem is referenced by: rngcsect 20552 rngcinv 20553 rngciso 20554 zrinitorngc 20558 zrtermorngc 20559 zrzeroorngc 20560 rhmsubcrngc 20584 rhmsubc 20605 |
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