Theorem rngcsect 45426

Description: A section in the category of non-unital rings, written out. (Contributed by AV, 28-Feb-2020.)

Hypotheses

Ref	Expression
rngcsect.c	⊢ 𝐶 = (RngCat‘𝑈)
rngcsect.b	⊢ 𝐵 = (Base‘𝐶)
rngcsect.u	⊢ (𝜑 → 𝑈 ∈ 𝑉)
rngcsect.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
rngcsect.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
rngcsect.e	⊢ 𝐸 = (Base‘𝑋)
rngcsect.n	⊢ 𝑆 = (Sect‘𝐶)

Assertion

Ref	Expression
rngcsect	⊢ (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸))))

Proof of Theorem rngcsect

Step	Hyp	Ref	Expression
1		rngcsect.b	. . 3 ⊢ 𝐵 = (Base‘𝐶)
2		eqid 2738	. . 3 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶)
3		eqid 2738	. . 3 ⊢ (comp‘𝐶) = (comp‘𝐶)
4		eqid 2738	. . 3 ⊢ (Id‘𝐶) = (Id‘𝐶)
5		rngcsect.n	. . 3 ⊢ 𝑆 = (Sect‘𝐶)
6		rngcsect.u	. . . 4 ⊢ (𝜑 → 𝑈 ∈ 𝑉)
7		rngcsect.c	. . . . 5 ⊢ 𝐶 = (RngCat‘𝑈)
8	7	rngccat 45424	. . . 4 ⊢ (𝑈 ∈ 𝑉 → 𝐶 ∈ Cat)
9	6, 8	syl 17	. . 3 ⊢ (𝜑 → 𝐶 ∈ Cat)
10		rngcsect.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
11		rngcsect.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
12	1, 2, 3, 4, 5, 9, 10, 11	issect 17382	. 2 ⊢ (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋))))
13	7, 1, 6, 2, 10, 11	rngchom 45413	. . . . . . 7 ⊢ (𝜑 → (𝑋(Hom ‘𝐶)𝑌) = (𝑋 RngHomo 𝑌))
14	13	eleq2d 2824	. . . . . 6 ⊢ (𝜑 → (𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ↔ 𝐹 ∈ (𝑋 RngHomo 𝑌)))
15	7, 1, 6, 2, 11, 10	rngchom 45413	. . . . . . 7 ⊢ (𝜑 → (𝑌(Hom ‘𝐶)𝑋) = (𝑌 RngHomo 𝑋))
16	15	eleq2d 2824	. . . . . 6 ⊢ (𝜑 → (𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ↔ 𝐺 ∈ (𝑌 RngHomo 𝑋)))
17	14, 16	anbi12d 630	. . . . 5 ⊢ (𝜑 → ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ↔ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))))
18	17	anbi1d 629	. . . 4 ⊢ (𝜑 → (((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋))))
19	6	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝑈 ∈ 𝑉)
20	10	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝑋 ∈ 𝐵)
21	7, 1, 6	rngcbas 45411	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng))
22	21	eleq2d 2824	. . . . . . . . . 10 ⊢ (𝜑 → (𝑋 ∈ 𝐵 ↔ 𝑋 ∈ (𝑈 ∩ Rng)))
23		inss1 4159	. . . . . . . . . . . 12 ⊢ (𝑈 ∩ Rng) ⊆ 𝑈
24	23	a1i 11	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑈 ∩ Rng) ⊆ 𝑈)
25	24	sseld 3916	. . . . . . . . . 10 ⊢ (𝜑 → (𝑋 ∈ (𝑈 ∩ Rng) → 𝑋 ∈ 𝑈))
26	22, 25	sylbid 239	. . . . . . . . 9 ⊢ (𝜑 → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈))
27	26	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝑈))
28	20, 27	mpd 15	. . . . . . 7 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝑋 ∈ 𝑈)
29	11	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝑌 ∈ 𝐵)
30	21	eleq2d 2824	. . . . . . . . . 10 ⊢ (𝜑 → (𝑌 ∈ 𝐵 ↔ 𝑌 ∈ (𝑈 ∩ Rng)))
31	24	sseld 3916	. . . . . . . . . 10 ⊢ (𝜑 → (𝑌 ∈ (𝑈 ∩ Rng) → 𝑌 ∈ 𝑈))
32	30, 31	sylbid 239	. . . . . . . . 9 ⊢ (𝜑 → (𝑌 ∈ 𝐵 → 𝑌 ∈ 𝑈))
33	32	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → (𝑌 ∈ 𝐵 → 𝑌 ∈ 𝑈))
34	29, 33	mpd 15	. . . . . . 7 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝑌 ∈ 𝑈)
35		eqid 2738	. . . . . . . . . 10 ⊢ (Base‘𝑋) = (Base‘𝑋)
36		eqid 2738	. . . . . . . . . 10 ⊢ (Base‘𝑌) = (Base‘𝑌)
37	35, 36	rnghmf 45345	. . . . . . . . 9 ⊢ (𝐹 ∈ (𝑋 RngHomo 𝑌) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
38	37	adantr 480	. . . . . . . 8 ⊢ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
39	38	adantl 481	. . . . . . 7 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝐹:(Base‘𝑋)⟶(Base‘𝑌))
40	36, 35	rnghmf 45345	. . . . . . . . 9 ⊢ (𝐺 ∈ (𝑌 RngHomo 𝑋) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
41	40	adantl 481	. . . . . . . 8 ⊢ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
42	41	adantl 481	. . . . . . 7 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → 𝐺:(Base‘𝑌)⟶(Base‘𝑋))
43	7, 19, 3, 28, 34, 28, 39, 42	rngcco 45417	. . . . . 6 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = (𝐺 ∘ 𝐹))
44		rngcsect.e	. . . . . . . 8 ⊢ 𝐸 = (Base‘𝑋)
45	7, 1, 4, 6, 10, 44	rngcid 45425	. . . . . . 7 ⊢ (𝜑 → ((Id‘𝐶)‘𝑋) = ( I ↾ 𝐸))
46	45	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → ((Id‘𝐶)‘𝑋) = ( I ↾ 𝐸))
47	43, 46	eqeq12d 2754	. . . . 5 ⊢ ((𝜑 ∧ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋))) → ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋) ↔ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸)))
48	47	pm5.32da 578	. . . 4 ⊢ (𝜑 → (((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸))))
49	18, 48	bitrd 278	. . 3 ⊢ (𝜑 → (((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸))))
50		df-3an 1087	. . 3 ⊢ ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋)) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)))
51		df-3an 1087	. . 3 ⊢ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸)) ↔ ((𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋)) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸)))
52	49, 50, 51	3bitr4g 313	. 2 ⊢ (𝜑 → ((𝐹 ∈ (𝑋(Hom ‘𝐶)𝑌) ∧ 𝐺 ∈ (𝑌(Hom ‘𝐶)𝑋) ∧ (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑋)𝐹) = ((Id‘𝐶)‘𝑋)) ↔ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸))))
53	12, 52	bitrd 278	1 ⊢ (𝜑 → (𝐹(𝑋𝑆𝑌)𝐺 ↔ (𝐹 ∈ (𝑋 RngHomo 𝑌) ∧ 𝐺 ∈ (𝑌 RngHomo 𝑋) ∧ (𝐺 ∘ 𝐹) = ( I ↾ 𝐸))))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 395   ∧ w3a 1085   = wceq 1539   ∈ wcel 2108   ∩ cin 3882   ⊆ wss 3883  ⟨cop 4564   class class class wbr 5070   I cid 5479   ↾ cres 5582   ∘ ccom 5584  ⟶wf 6414  ‘cfv 6418  (class class class)co 7255  Basecbs 16840  Hom chom 16899  compcco 16900  Catccat 17290  Idccid 17291  Sectcsect 17373  Rngcrng 45320   RngHomo crngh 45331  RngCatcrngc 45403

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-1o 8267  df-er 8456  df-map 8575  df-pm 8576  df-ixp 8644  df-en 8692  df-dom 8693  df-sdom 8694  df-fin 8695  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-2 11966  df-3 11967  df-4 11968  df-5 11969  df-6 11970  df-7 11971  df-8 11972  df-9 11973  df-n0 12164  df-z 12250  df-dec 12367  df-uz 12512  df-fz 13169  df-struct 16776  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-ress 16868  df-plusg 16901  df-hom 16912  df-cco 16913  df-0g 17069  df-cat 17294  df-cid 17295  df-homf 17296  df-sect 17376  df-ssc 17439  df-resc 17440  df-subc 17441  df-estrc 17755  df-mgm 18241  df-sgrp 18290  df-mnd 18301  df-mhm 18345  df-grp 18495  df-ghm 18747  df-abl 19304  df-mgp 19636  df-mgmhm 45221  df-rng0 45321  df-rnghomo 45333  df-rngc 45405

This theorem is referenced by:  rngcinv  45427