Theorem rnghmsubcsetclem1 42300

Description: Lemma 1 for rnghmsubcsetc 42302. (Contributed by AV, 9-Mar-2020.)

Hypotheses

Ref	Expression
rnghmsubcsetc.c	⊢ 𝐶 = (ExtStrCat‘𝑈)
rnghmsubcsetc.u	⊢ (𝜑 → 𝑈 ∈ 𝑉)
rnghmsubcsetc.b	⊢ (𝜑 → 𝐵 = (Rng ∩ 𝑈))
rnghmsubcsetc.h	⊢ (𝜑 → 𝐻 = ( RngHomo ↾ (𝐵 × 𝐵)))

Assertion

Ref	Expression
rnghmsubcsetclem1	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥))

Proof of Theorem rnghmsubcsetclem1

Step	Hyp	Ref	Expression
1		rnghmsubcsetc.b	. . . . . 6 ⊢ (𝜑 → 𝐵 = (Rng ∩ 𝑈))
2	1	eleq2d 2716	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐵 ↔ 𝑥 ∈ (Rng ∩ 𝑈)))
3		elin 3829	. . . . . 6 ⊢ (𝑥 ∈ (Rng ∩ 𝑈) ↔ (𝑥 ∈ Rng ∧ 𝑥 ∈ 𝑈))
4	3	simplbi 475	. . . . 5 ⊢ (𝑥 ∈ (Rng ∩ 𝑈) → 𝑥 ∈ Rng)
5	2, 4	syl6bi 243	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐵 → 𝑥 ∈ Rng))
6	5	imp 444	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ Rng)
7		eqid 2651	. . . 4 ⊢ (Base‘𝑥) = (Base‘𝑥)
8	7	idrnghm 42233	. . 3 ⊢ (𝑥 ∈ Rng → ( I ↾ (Base‘𝑥)) ∈ (𝑥 RngHomo 𝑥))
9	6, 8	syl 17	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ( I ↾ (Base‘𝑥)) ∈ (𝑥 RngHomo 𝑥))
10		rnghmsubcsetc.c	. . 3 ⊢ 𝐶 = (ExtStrCat‘𝑈)
11		eqid 2651	. . 3 ⊢ (Id‘𝐶) = (Id‘𝐶)
12		rnghmsubcsetc.u	. . . 4 ⊢ (𝜑 → 𝑈 ∈ 𝑉)
13	12	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑈 ∈ 𝑉)
14	3	simprbi 479	. . . . 5 ⊢ (𝑥 ∈ (Rng ∩ 𝑈) → 𝑥 ∈ 𝑈)
15	2, 14	syl6bi 243	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐵 → 𝑥 ∈ 𝑈))
16	15	imp 444	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ 𝑈)
17	10, 11, 13, 16	estrcid 16821	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((Id‘𝐶)‘𝑥) = ( I ↾ (Base‘𝑥)))
18		rnghmsubcsetc.h	. . . 4 ⊢ (𝜑 → 𝐻 = ( RngHomo ↾ (𝐵 × 𝐵)))
19	18	oveqdr 6714	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥𝐻𝑥) = (𝑥( RngHomo ↾ (𝐵 × 𝐵))𝑥))
20		eqid 2651	. . . . . . . 8 ⊢ (RngCat‘𝑈) = (RngCat‘𝑈)
21		eqid 2651	. . . . . . . 8 ⊢ (Base‘(RngCat‘𝑈)) = (Base‘(RngCat‘𝑈))
22		eqid 2651	. . . . . . . 8 ⊢ (Hom ‘(RngCat‘𝑈)) = (Hom ‘(RngCat‘𝑈))
23	20, 21, 12, 22	rngchomfval 42291	. . . . . . 7 ⊢ (𝜑 → (Hom ‘(RngCat‘𝑈)) = ( RngHomo ↾ ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈)))))
24	20, 21, 12	rngcbas 42290	. . . . . . . . . 10 ⊢ (𝜑 → (Base‘(RngCat‘𝑈)) = (𝑈 ∩ Rng))
25		incom 3838	. . . . . . . . . . . 12 ⊢ (Rng ∩ 𝑈) = (𝑈 ∩ Rng)
26	1, 25	syl6eq 2701	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng))
27	26	eqcomd 2657	. . . . . . . . . 10 ⊢ (𝜑 → (𝑈 ∩ Rng) = 𝐵)
28	24, 27	eqtrd 2685	. . . . . . . . 9 ⊢ (𝜑 → (Base‘(RngCat‘𝑈)) = 𝐵)
29	28	sqxpeqd 5175	. . . . . . . 8 ⊢ (𝜑 → ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈))) = (𝐵 × 𝐵))
30	29	reseq2d 5428	. . . . . . 7 ⊢ (𝜑 → ( RngHomo ↾ ((Base‘(RngCat‘𝑈)) × (Base‘(RngCat‘𝑈)))) = ( RngHomo ↾ (𝐵 × 𝐵)))
31	23, 30	eqtrd 2685	. . . . . 6 ⊢ (𝜑 → (Hom ‘(RngCat‘𝑈)) = ( RngHomo ↾ (𝐵 × 𝐵)))
32	31	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (Hom ‘(RngCat‘𝑈)) = ( RngHomo ↾ (𝐵 × 𝐵)))
33	32	eqcomd 2657	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ( RngHomo ↾ (𝐵 × 𝐵)) = (Hom ‘(RngCat‘𝑈)))
34	33	oveqd 6707	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥( RngHomo ↾ (𝐵 × 𝐵))𝑥) = (𝑥(Hom ‘(RngCat‘𝑈))𝑥))
35	26	eleq2d 2716	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐵 ↔ 𝑥 ∈ (𝑈 ∩ Rng)))
36	35	biimpa 500	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ (𝑈 ∩ Rng))
37	24	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (Base‘(RngCat‘𝑈)) = (𝑈 ∩ Rng))
38	36, 37	eleqtrrd 2733	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ (Base‘(RngCat‘𝑈)))
39	20, 21, 13, 22, 38, 38	rngchom 42292	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥(Hom ‘(RngCat‘𝑈))𝑥) = (𝑥 RngHomo 𝑥))
40	19, 34, 39	3eqtrd 2689	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥𝐻𝑥) = (𝑥 RngHomo 𝑥))
41	9, 17, 40	3eltr4d 2745	1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ((Id‘𝐶)‘𝑥) ∈ (𝑥𝐻𝑥))

Syntax hints:   → wi 4   ∧ wa 383   = wceq 1523   ∈ wcel 2030   ∩ cin 3606   I cid 5052   × cxp 5141   ↾ cres 5145  ‘cfv 5926  (class class class)co 6690  Basecbs 15904  Hom chom 15999  Idccid 16373  ExtStrCatcestrc 16809  Rngcrng 42199   RngHomo crngh 42210  RngCatcrngc 42282

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051

This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-fal 1529  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rmo 2949  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-uni 4469  df-int 4508  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-om 7108  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-rdg 7551  df-1o 7605  df-oadd 7609  df-er 7787  df-map 7901  df-en 7998  df-dom 7999  df-sdom 8000  df-fin 8001  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-nn 11059  df-2 11117  df-3 11118  df-4 11119  df-5 11120  df-6 11121  df-7 11122  df-8 11123  df-9 11124  df-n0 11331  df-z 11416  df-dec 11532  df-uz 11726  df-fz 12365  df-struct 15906  df-ndx 15907  df-slot 15908  df-base 15910  df-sets 15911  df-ress 15912  df-plusg 16001  df-hom 16013  df-cco 16014  df-cat 16376  df-cid 16377  df-resc 16518  df-estrc 16810  df-mgm 17289  df-sgrp 17331  df-mnd 17342  df-grp 17472  df-ghm 17705  df-abl 18242  df-mgp 18536  df-mgmhm 42104  df-rng0 42200  df-rnghomo 42212  df-rngc 42284

This theorem is referenced by:  rnghmsubcsetc  42302