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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 2753 | . . . . . 6 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 5 | eqidd 2753 | . . . . . 6 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 6 | 2, 3, 4, 5 | rngcval 20636 | . . . . 5 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 7 | 6 | fveq2d 6856 | . . . 4 ⊢ (𝜑 → (Id‘𝐶) = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 8 | 1, 7 | eqtrid 2799 | . . 3 ⊢ (𝜑 → 1 = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 9 | 8 | fveq1d 6854 | . 2 ⊢ (𝜑 → ( 1 ‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 10 | eqid 2752 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 11 | eqid 2752 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 12 | incom 4152 | . . . . 5 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 13 | 12 | a1i 11 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 14 | 11, 3, 13, 5 | rnghmsubcsetc 20651 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 15 | 4, 5 | rnghmresfn 20637 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) Fn ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) |
| 16 | eqid 2752 | . . 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 20639 | . . . . 5 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| 20 | 19 | eleq2d 2838 | . . . 4 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng))) |
| 21 | 17, 20 | mpbid 234 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Rng)) |
| 22 | 10, 14, 15, 16, 21 | subcid 17852 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 23 | elinel1 4144 | . . . . . 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 18138 | . . 3 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ (Base‘𝑋))) |
| 27 | rngcid.s | . . . . . 6 ⊢ 𝑆 = (Base‘𝑋) | |
| 28 | 27 | eqcomi 2761 | . . . . 5 ⊢ (Base‘𝑋) = 𝑆 |
| 29 | 28 | a1i 11 | . . . 4 ⊢ (𝜑 → (Base‘𝑋) = 𝑆) |
| 30 | 29 | reseq2d 5954 | . . 3 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) = ( I ↾ 𝑆)) |
| 31 | 26, 30 | eqtrd 2787 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ 𝑆)) |
| 32 | 9, 22, 31 | 3eqtr2d 2793 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1550 ∈ wcel 2132 ∩ cin 3894 I cid 5530 × cxp 5634 ↾ cres 5638 ‘cfv 6506 (class class class)co 7381 Basecbs 17217 Idccid 17669 ↾cat cresc 17813 ExtStrCatcestrc 18126 Rngcrng 20170 RngHom crnghm 20451 RngCatcrngc 20634 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-rep 5217 ax-sep 5236 ax-nul 5246 ax-pow 5312 ax-pr 5380 ax-un 7703 ax-cnex 11115 ax-resscn 11116 ax-1cn 11117 ax-icn 11118 ax-addcl 11119 ax-addrcl 11120 ax-mulcl 11121 ax-mulrcl 11122 ax-mulcom 11123 ax-addass 11124 ax-mulass 11125 ax-distr 11126 ax-i2m1 11127 ax-1ne0 11128 ax-1rid 11129 ax-rnegex 11130 ax-rrecex 11131 ax-cnre 11132 ax-pre-lttri 11133 ax-pre-lttrn 11134 ax-pre-ltadd 11135 ax-pre-mulgt0 11136 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ne 2948 df-nel 3052 df-ral 3067 df-rex 3077 df-rmo 3357 df-reu 3358 df-rab 3405 df-v 3446 df-sbc 3736 df-csb 3844 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-pss 3915 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-tp 4577 df-op 4579 df-uni 4856 df-iun 4941 df-br 5091 df-opab 5153 df-mpt 5172 df-tr 5198 df-id 5531 df-eprel 5536 df-po 5544 df-so 5545 df-fr 5589 df-we 5591 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-pred 6273 df-ord 6334 df-on 6335 df-lim 6336 df-suc 6337 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-f1 6511 df-fo 6512 df-f1o 6513 df-fv 6514 df-riota 7338 df-ov 7384 df-oprab 7385 df-mpo 7386 df-om 7832 df-1st 7955 df-2nd 7956 df-frecs 8246 df-wrecs 8277 df-recs 8326 df-rdg 8365 df-1o 8421 df-er 8662 df-map 8794 df-pm 8795 df-ixp 8865 df-en 8913 df-dom 8914 df-sdom 8915 df-fin 8916 df-pnf 11204 df-mnf 11205 df-xr 11206 df-ltxr 11207 df-le 11208 df-sub 11402 df-neg 11403 df-nn 12197 df-2 12266 df-3 12267 df-4 12268 df-5 12269 df-6 12270 df-7 12271 df-8 12272 df-9 12273 df-n0 12468 df-z 12555 df-dec 12675 df-uz 12826 df-fz 13499 df-struct 17155 df-sets 17172 df-slot 17190 df-ndx 17202 df-base 17218 df-ress 17239 df-plusg 17271 df-hom 17282 df-cco 17283 df-0g 17442 df-cat 17672 df-cid 17673 df-homf 17674 df-ssc 17815 df-resc 17816 df-subc 17817 df-estrc 18127 df-mgm 18646 df-mgmhm 18698 df-sgrp 18725 df-mnd 18741 df-mhm 18789 df-grp 18950 df-ghm 19226 df-abl 19795 df-mgp 20159 df-rng 20171 df-rnghm 20453 df-rngc 20635 |
| This theorem is referenced by: rngcsect 20654 rhmsubcrngclem1 20684 rhmsubclem3 20705 |
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