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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 2761 | . . . . . 6 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 5 | eqidd 2761 | . . . . . 6 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 6 | 2, 3, 4, 5 | rngcval 20831 | . . . . 5 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 7 | 6 | fveq2d 6877 | . . . 4 ⊢ (𝜑 → (Id‘𝐶) = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 8 | 1, 7 | eqtrid 2807 | . . 3 ⊢ (𝜑 → 1 = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 9 | 8 | fveq1d 6875 | . 2 ⊢ (𝜑 → ( 1 ‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 10 | eqid 2760 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 11 | eqid 2760 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 12 | incom 4154 | . . . . 5 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 13 | 12 | a1i 11 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 14 | 11, 3, 13, 5 | rnghmsubcsetc 20846 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 15 | 4, 5 | rnghmresfn 20832 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) Fn ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) |
| 16 | eqid 2760 | . . 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 20834 | . . . . 5 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| 20 | 19 | eleq2d 2846 | . . . 4 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng))) |
| 21 | 17, 20 | mpbid 235 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Rng)) |
| 22 | 10, 14, 15, 16, 21 | subcid 17983 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 23 | elinel1 4146 | . . . . . 6 ⊢ (𝑋 ∈ (𝑈 ∩ Rng) → 𝑋 ∈ 𝑈) | |
| 24 | 20, 23 | biimtrdi 256 | . . . . 5 ⊢ (𝜑 → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈)) |
| 25 | 17, 24 | mpd 16 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| 26 | 11, 16, 3, 25 | estrcid 18269 | . . 3 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ (Base‘𝑋))) |
| 27 | rngcid.s | . . . . . 6 ⊢ 𝑆 = (Base‘𝑋) | |
| 28 | 27 | eqcomi 2769 | . . . . 5 ⊢ (Base‘𝑋) = 𝑆 |
| 29 | 28 | a1i 11 | . . . 4 ⊢ (𝜑 → (Base‘𝑋) = 𝑆) |
| 30 | 29 | reseq2d 5966 | . . 3 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) = ( I ↾ 𝑆)) |
| 31 | 26, 30 | eqtrd 2795 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ 𝑆)) |
| 32 | 9, 22, 31 | 3eqtr2d 2801 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ∩ cin 3897 I cid 5541 × cxp 5645 ↾ cres 5649 ‘cfv 6527 (class class class)co 7408 Basecbs 17348 Idccid 17800 ↾cat cresc 17944 ExtStrCatcestrc 18257 Rngcrng 20335 RngHom crnghm 20625 RngCatcrngc 20829 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 ax-cnex 11227 ax-resscn 11228 ax-1cn 11229 ax-icn 11230 ax-addcl 11231 ax-addrcl 11232 ax-mulcl 11233 ax-mulrcl 11234 ax-mulcom 11235 ax-addass 11236 ax-mulass 11237 ax-distr 11238 ax-i2m1 11239 ax-1ne0 11240 ax-1rid 11241 ax-rnegex 11242 ax-rrecex 11243 ax-cnre 11244 ax-pre-lttri 11245 ax-pre-lttrn 11246 ax-pre-ltadd 11247 ax-pre-mulgt0 11248 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 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 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-lim 6356 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8454 df-er 8695 df-map 8827 df-pm 8828 df-ixp 8904 df-en 8952 df-dom 8953 df-sdom 8954 df-fin 8955 df-pnf 11316 df-mnf 11317 df-xr 11318 df-ltxr 11319 df-le 11320 df-sub 11514 df-neg 11515 df-nn 12305 df-2 12374 df-3 12375 df-4 12376 df-5 12377 df-6 12378 df-7 12379 df-8 12380 df-9 12381 df-n0 12576 df-z 12663 df-dec 12784 df-uz 12935 df-fz 13609 df-struct 17286 df-sets 17303 df-slot 17321 df-ndx 17333 df-base 17349 df-ress 17370 df-plusg 17402 df-hom 17413 df-cco 17414 df-0g 17573 df-cat 17803 df-cid 17804 df-homf 17805 df-ssc 17946 df-resc 17947 df-subc 17948 df-estrc 18258 df-mgm 18777 df-mgmhm 18842 df-sgrp 18869 df-mnd 18885 df-mhm 18939 df-grp 19108 df-ghm 19389 df-abl 19958 df-mgp 20322 df-rng 20336 df-rnghm 20627 df-rngc 20830 |
| This theorem is used by: rngcsect 20849 rhmsubcrngclem1 20879 rhmsubclem3 20900 |
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