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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 2736 | . . . . . 6 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng)) | |
| 5 | eqidd 2736 | . . . . . 6 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) = ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 6 | 2, 3, 4, 5 | rngcval 20553 | . . . . 5 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))))) |
| 7 | 6 | fveq2d 6837 | . . . 4 ⊢ (𝜑 → (Id‘𝐶) = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 8 | 1, 7 | eqtrid 2782 | . . 3 ⊢ (𝜑 → 1 = (Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))) |
| 9 | 8 | fveq1d 6835 | . 2 ⊢ (𝜑 → ( 1 ‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 10 | eqid 2735 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) = ((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))) | |
| 11 | eqid 2735 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 12 | incom 4160 | . . . . 5 ⊢ (𝑈 ∩ Rng) = (Rng ∩ 𝑈) | |
| 13 | 12 | a1i 11 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) = (Rng ∩ 𝑈)) |
| 14 | 11, 3, 13, 5 | rnghmsubcsetc 20568 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) ∈ (Subcat‘(ExtStrCat‘𝑈))) |
| 15 | 4, 5 | rnghmresfn 20554 | . . 3 ⊢ (𝜑 → ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) Fn ((𝑈 ∩ Rng) × (𝑈 ∩ Rng))) |
| 16 | eqid 2735 | . . 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 20556 | . . . . 5 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| 20 | 19 | eleq2d 2821 | . . . 4 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng))) |
| 21 | 17, 20 | mpbid 232 | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝑈 ∩ Rng)) |
| 22 | 10, 14, 15, 16, 21 | subcid 17773 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ((Id‘((ExtStrCat‘𝑈) ↾cat ( RngHom ↾ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)))))‘𝑋)) |
| 23 | elinel1 4152 | . . . . . 6 ⊢ (𝑋 ∈ (𝑈 ∩ Rng) → 𝑋 ∈ 𝑈) | |
| 24 | 20, 23 | biimtrdi 253 | . . . . 5 ⊢ (𝜑 → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈)) |
| 25 | 17, 24 | mpd 15 | . . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝑈) |
| 26 | 11, 16, 3, 25 | estrcid 18059 | . . 3 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ (Base‘𝑋))) |
| 27 | rngcid.s | . . . . . 6 ⊢ 𝑆 = (Base‘𝑋) | |
| 28 | 27 | eqcomi 2744 | . . . . 5 ⊢ (Base‘𝑋) = 𝑆 |
| 29 | 28 | a1i 11 | . . . 4 ⊢ (𝜑 → (Base‘𝑋) = 𝑆) |
| 30 | 29 | reseq2d 5937 | . . 3 ⊢ (𝜑 → ( I ↾ (Base‘𝑋)) = ( I ↾ 𝑆)) |
| 31 | 26, 30 | eqtrd 2770 | . 2 ⊢ (𝜑 → ((Id‘(ExtStrCat‘𝑈))‘𝑋) = ( I ↾ 𝑆)) |
| 32 | 9, 22, 31 | 3eqtr2d 2776 | 1 ⊢ (𝜑 → ( 1 ‘𝑋) = ( I ↾ 𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ∩ cin 3899 I cid 5517 × cxp 5621 ↾ cres 5625 ‘cfv 6491 (class class class)co 7358 Basecbs 17138 Idccid 17590 ↾cat cresc 17734 ExtStrCatcestrc 18047 Rngcrng 20089 RngHom crnghm 20372 RngCatcrngc 20551 |
| 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 2183 ax-ext 2707 ax-rep 5223 ax-sep 5240 ax-nul 5250 ax-pow 5309 ax-pr 5376 ax-un 7680 ax-cnex 11084 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3349 df-reu 3350 df-rab 3399 df-v 3441 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4285 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-tp 4584 df-op 4586 df-uni 4863 df-iun 4947 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5518 df-eprel 5523 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6258 df-ord 6319 df-on 6320 df-lim 6321 df-suc 6322 df-iota 6447 df-fun 6493 df-fn 6494 df-f 6495 df-f1 6496 df-fo 6497 df-f1o 6498 df-fv 6499 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-er 8635 df-map 8767 df-pm 8768 df-ixp 8838 df-en 8886 df-dom 8887 df-sdom 8888 df-fin 8889 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-nn 12148 df-2 12210 df-3 12211 df-4 12212 df-5 12213 df-6 12214 df-7 12215 df-8 12216 df-9 12217 df-n0 12404 df-z 12491 df-dec 12610 df-uz 12754 df-fz 13426 df-struct 17076 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17139 df-ress 17160 df-plusg 17192 df-hom 17203 df-cco 17204 df-0g 17363 df-cat 17593 df-cid 17594 df-homf 17595 df-ssc 17736 df-resc 17737 df-subc 17738 df-estrc 18048 df-mgm 18567 df-mgmhm 18619 df-sgrp 18646 df-mnd 18662 df-mhm 18710 df-grp 18868 df-ghm 19144 df-abl 19714 df-mgp 20078 df-rng 20090 df-rnghm 20374 df-rngc 20552 |
| This theorem is referenced by: rngcsect 20571 rhmsubcrngclem1 20601 rhmsubclem3 20622 |
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