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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 22 | . . 3 ⊢ (𝑈 ∈ 𝑉 → 𝑈 ∈ 𝑉) | |
| 3 | eqidd 2738 | . . 3 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Ring) = (𝑈 ∩ Ring)) | |
| 4 | eqidd 2738 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) = ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) | |
| 5 | 1, 2, 3, 4 | ringcval 20615 | . 2 ⊢ (𝑈 ∈ 𝑉 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))))) |
| 6 | eqid 2737 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) = ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) | |
| 7 | eqid 2737 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 8 | eqidd 2738 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → (Ring ∩ 𝑈) = (Ring ∩ 𝑈)) | |
| 9 | incom 4150 | . . . . . . 7 ⊢ (𝑈 ∩ Ring) = (Ring ∩ 𝑈) | |
| 10 | 9 | a1i 11 | . . . . . 6 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Ring) = (Ring ∩ 𝑈)) |
| 11 | 10 | sqxpeqd 5656 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)) = ((Ring ∩ 𝑈) × (Ring ∩ 𝑈))) |
| 12 | 11 | reseq2d 5938 | . . . 4 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) = ( RingHom ↾ ((Ring ∩ 𝑈) × (Ring ∩ 𝑈)))) |
| 13 | 7, 2, 8, 12 | rhmsubcsetc 20630 | . . 3 ⊢ (𝑈 ∈ 𝑉 → ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 14 | 6, 13 | subccat 17806 | . 2 ⊢ (𝑈 ∈ 𝑉 → ((ExtStrCat‘𝑈) ↾cat ( RingHom ↾ ((𝑈 ∩ Ring) × (𝑈 ∩ Ring)))) ∈ Cat) |
| 15 | 5, 14 | eqeltrd 2837 | 1 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ∩ cin 3889 × cxp 5622 ↾ cres 5626 ‘cfv 6492 (class class class)co 7360 Catccat 17621 ↾cat cresc 17766 ExtStrCatcestrc 18079 Ringcrg 20205 RingHom crh 20440 RingCatcringc 20613 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-1o 8398 df-er 8636 df-map 8768 df-pm 8769 df-ixp 8839 df-en 8887 df-dom 8888 df-sdom 8889 df-fin 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-fz 13453 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-hom 17235 df-cco 17236 df-0g 17395 df-cat 17625 df-cid 17626 df-homf 17627 df-ssc 17768 df-resc 17769 df-subc 17770 df-estrc 18080 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-mhm 18742 df-grp 18903 df-ghm 19179 df-mgp 20113 df-ur 20154 df-ring 20207 df-rhm 20443 df-ringc 20614 |
| This theorem is referenced by: ringcsect 20638 ringcinv 20639 ringciso 20640 zrtermoringc 20643 zrninitoringc 20644 srhmsubc 20648 irinitoringc 21469 nzerooringczr 21470 funcringcsetcALTV2 48787 |
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