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| Mirrors > Home > MPE Home > Th. List > rngcid | Structured version Visualization version GIF version | ||
| Description: The identity arrow in the category of non-unital rings is the identity function. (Contributed by AV, 27-Feb-2020.) (Revised by AV, 10-Mar-2020.) |
| Ref | Expression |
|---|---|
| rngccat.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| rngcid.b | ⊢ 𝐵 = (Base‘𝐶) |
| rngcid.o | ⊢ 1 = (Id‘𝐶) |
| rngcid.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| rngcid.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| rngcid.s | ⊢ 𝑆 = (Base‘𝑋) |
| Ref | Expression |
|---|---|
| rngcid | ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rngcid.o | . . . 4 ⊢ 1 = (Id‘𝐶) | |
| 2 | rngccat.c | . . . . . 6 ⊢ 𝐶 = (RngCat‘𝑈) | |
| 3 | rngcid.u | . . . . . 6 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 4 | eqidd 2764 | . . . . . 6 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 5 | eqidd 2764 | . . . . . 6 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 6 | 2, 3, 4, 5 | rngcval 20678 | . . . . 5 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 7 | 6 | fveq2d 6871 | . . . 4 ⊢ (𝜑 → (Id‘𝐶) = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 8 | 1, 7 | eqtrid 2810 | . . 3 ⊢ (𝜑 → 1 = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 9 | 8 | fveq1d 6869 | . 2 ⊢ (𝜑 → ( 1 ‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 10 | eqid 2763 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 11 | eqid 2763 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 12 | incom 4162 | . . . . 5 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 13 | 12 | a1i 11 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 14 | 11, 3, 13, 5 | rnghmsubcsetc 20693 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 15 | 4, 5 | rnghmresfn 20679 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) Fn ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) |
| 16 | eqid 2763 | . . 3 ⊢ (Id‘(ExtStrCat‘𝑈)) = (Id‘(ExtStrCat‘𝑈)) | |
| 17 | rngcid.x | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 18 | rngcid.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐶) | |
| 19 | 2, 18, 3 | rngcbas 20681 | . . . . 5 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| 20 | 19 | eleq2d 2849 | . . . 4 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng))) |
| 21 | 17, 20 | mpbid 234 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Rng)) |
| 22 | 10, 14, 15, 16, 21 | subcid 17890 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 23 | elinel1 4154 | . . . . . 6 ⊢ (𝑋 ∈ (𝑈 ∩ Rng) → 𝑋 ∈ 𝑈) | |
| 24 | 20, 23 | biimtrdi 255 | . . . . 5 ⊢ (𝜑 → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈)) |
| 25 | 17, 24 | mpd 15 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| 26 | 11, 16, 3, 25 | estrcid 18176 | . . 3 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ (Base‘𝑋))) |
| 27 | rngcid.s | . . . . . 6 ⊢ 𝑆 = (Base‘𝑋) | |
| 28 | 27 | eqcomi 2772 | . . . . 5 ⊢ (Base‘𝑋) = 𝑆 |
| 29 | 28 | a1i 11 | . . . 4 ⊢ (𝜑 → (Base‘𝑋) = 𝑆) |
| 30 | 29 | reseq2d 5965 | . . 3 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) = ( I ↾ 𝑆)) |
| 31 | 26, 30 | eqtrd 2798 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ 𝑆)) |
| 32 | 9, 22, 31 | 3eqtr2d 2804 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1561 ∈ wcel 2143 ∩ cin 3904 I cid 5542 × cxp 5646 ↾ cres 5650 ‘cfv 6521 (class class class)co 7396 Basecbs 17255 Idccid 17707 ↾cat cresc 17851 ExtStrCatcestrc 18164 Rngcrng 20208 RngHom crnghm 20493 RngCatcrngc 20676 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5228 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7718 ax-cnex 11140 ax-resscn 11141 ax-1cn 11142 ax-icn 11143 ax-addcl 11144 ax-addrcl 11145 ax-mulcl 11146 ax-mulrcl 11147 ax-mulcom 11148 ax-addass 11149 ax-mulass 11150 ax-distr 11151 ax-i2m1 11152 ax-1ne0 11153 ax-1rid 11154 ax-rnegex 11155 ax-rrecex 11156 ax-cnre 11157 ax-pre-lttri 11158 ax-pre-lttrn 11159 ax-pre-ltadd 11160 ax-pre-mulgt0 11161 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-tp 4588 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-er 8678 df-map 8810 df-pm 8811 df-ixp 8880 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-pnf 11229 df-mnf 11230 df-xr 11231 df-ltxr 11232 df-le 11233 df-sub 11427 df-neg 11428 df-nn 12221 df-2 12290 df-3 12291 df-4 12292 df-5 12293 df-6 12294 df-7 12295 df-8 12296 df-9 12297 df-n0 12492 df-z 12579 df-dec 12699 df-uz 12850 df-fz 13523 df-struct 17193 df-sets 17210 df-slot 17228 df-ndx 17240 df-base 17256 df-ress 17277 df-plusg 17309 df-hom 17320 df-cco 17321 df-0g 17480 df-cat 17710 df-cid 17711 df-homf 17712 df-ssc 17853 df-resc 17854 df-subc 17855 df-estrc 18165 df-mgm 18684 df-mgmhm 18736 df-sgrp 18763 df-mnd 18779 df-mhm 18827 df-grp 18988 df-ghm 19264 df-abl 19833 df-mgp 20197 df-rng 20209 df-rnghm 20495 df-rngc 20677 |
| This theorem is referenced by: rngcsect 20696 rhmsubcrngclem1 20726 rhmsubclem3 20747 |
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