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| Mirrors > Home > MPE Home > Th. List > ringccat | Structured version Visualization version GIF version | ||
| Description: The category of unital rings is a category. (Contributed by AV, 14-Feb-2020.) (Revised by AV, 9-Mar-2020.) |
| Ref | Expression |
|---|---|
| ringccat.c | ⊢ 𝐶 = (RingCat‘𝑈) |
| Ref | Expression |
|---|---|
| ringccat | ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ringccat.c | . . 3 ⊢ 𝐶 = (RingCat‘𝑈) | |
| 2 | id 23 | . . 3 ⊢ (𝑈 ∈ 𝑉 → 𝑈 ∈ 𝑉) | |
| 3 | eqidd 2764 | . . 3 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Ring) = (𝑈 ∩ Ring)) | |
| 4 | eqidd 2764 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) = ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) | |
| 5 | 1, 2, 3, 4 | ringcval 20733 | . 2 ⊢ (𝑈 ∈ 𝑉 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))))) |
| 6 | eqid 2763 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) = ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) | |
| 7 | eqid 2763 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 8 | eqidd 2764 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → (Ring ∩ 𝑈) = (Ring ∩ 𝑈)) | |
| 9 | incom 4163 | . . . . . . 7 ⊢ (𝑈 ∩ Ring) = (Ring ∩ 𝑈) | |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Ring) = (Ring ∩ 𝑈)) |
| 11 | 10 | sqxpeqd 5695 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)) = ((Ring ∩ 𝑈) × (Ring ∩ 𝑈))) |
| 12 | 11 | reseq2d 5980 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) = ( RingHom ↾ ((Ring ∩ 𝑈) × (Ring ∩ 𝑈)))) |
| 13 | 7, 2, 8, 12 | rhmsubcsetc 20748 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 14 | 6, 13 | subccat 17906 | . 2 ⊢ (𝑈 ∈ 𝑉 → ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) ∈ Cat) |
| 15 | 5, 14 | eqeltrd 2863 | 1 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1570 ∈ wcel 2143 ∩ cin 3905 × cxp 5661 ↾ cres 5665 ‘cfv 6538 (class class class)co 7412 Catccat 17721 ↾cat cresc 17866 ExtStrCatcestrc 18179 Ringcrg 20316 RingHom crh 20552 RingCatcringc 20731 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734 ax-cnex 11157 ax-resscn 11158 ax-1cn 11159 ax-icn 11160 ax-addcl 11161 ax-addrcl 11162 ax-mulcl 11163 ax-mulrcl 11164 ax-mulcom 11165 ax-addass 11166 ax-mulass 11167 ax-distr 11168 ax-i2m1 11169 ax-1ne0 11170 ax-1rid 11171 ax-rnegex 11172 ax-rrecex 11173 ax-cnre 11174 ax-pre-lttri 11175 ax-pre-lttrn 11176 ax-pre-ltadd 11177 ax-pre-mulgt0 11178 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-tp 4595 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8279 df-wrecs 8310 df-recs 8359 df-rdg 8398 df-1o 8454 df-er 8695 df-map 8827 df-pm 8828 df-ixp 8897 df-en 8945 df-dom 8946 df-sdom 8947 df-fin 8948 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11444 df-neg 11445 df-nn 12235 df-2 12304 df-3 12305 df-4 12306 df-5 12307 df-6 12308 df-7 12309 df-8 12310 df-9 12311 df-n0 12506 df-z 12593 df-dec 12713 df-uz 12864 df-fz 13537 df-struct 17208 df-sets 17225 df-slot 17243 df-ndx 17255 df-base 17271 df-ress 17292 df-plusg 17324 df-hom 17335 df-cco 17336 df-0g 17495 df-cat 17725 df-cid 17726 df-homf 17727 df-ssc 17868 df-resc 17869 df-subc 17870 df-estrc 18180 df-mgm 18699 df-sgrp 18778 df-mnd 18794 df-mhm 18842 df-grp 19004 df-ghm 19285 df-mgp 20218 df-ur 20265 df-ring 20318 df-rhm 20555 df-ringc 20732 |
| This theorem is referenced by: ringcsect 20756 ringcinv 20757 ringciso 20758 zrtermoringc 20761 zrninitoringc 20762 srhmsubc 20766 irinitoringc 21610 nzerooringczr 21611 funcringcsetcALTV2 49041 |
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