Theorem evlsval2 22440

Description: Characterizing properties of the polynomial evaluation map function. (Contributed by Stefan O'Rear, 12-Mar-2015.) (Revised by AV, 18-Sep-2021.)

Hypotheses

Ref	Expression
evlsval.q	⊢ 𝑄 = ((𝐼 evalSub 𝑆)‘𝑅)
evlsval.w	⊢ 𝑊 = (𝐼 mPoly 𝑈)
evlsval.v	⊢ 𝑉 = (𝐼 mVar 𝑈)
evlsval.u	⊢ 𝑈 = (𝑆 ↾s 𝑅)
evlsval.t	⊢ 𝑇 = (𝑆 ↑s (𝐵 ↑m 𝐼))
evlsval.b	⊢ 𝐵 = (Base‘𝑆)
evlsval.a	⊢ 𝐴 = (algSc‘𝑊)
evlsval.x	⊢ 𝑋 = (𝑥 ∈ 𝑅 ↦ ((𝐵 ↑m 𝐼) × {𝑥}))
evlsval.y	⊢ 𝑌 = (𝑥 ∈ 𝐼 ↦ (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)))

Assertion

Ref	Expression
evlsval2	⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑄 ∈ (𝑊 RingHom 𝑇) ∧ ((𝑄 ∘ 𝐴) = 𝑋 ∧ (𝑄 ∘ 𝑉) = 𝑌)))

Distinct variable groups:   𝑔,𝐼,𝑥   𝑥,𝑅   𝑆,𝑔,𝑥   𝐵,𝑔,𝑥   𝑅,𝑔   𝑥,𝑇   𝑔,𝑍,𝑥

Allowed substitution hints:   𝐴(𝑥, 𝑔)   𝑄(𝑥, 𝑔)   𝑇(𝑔)   𝑈(𝑥, 𝑔)   𝑉(𝑥, 𝑔)   𝑊(𝑥, 𝑔)   𝑋(𝑥, 𝑔)   𝑌(𝑥, 𝑔)

Proof of Theorem evlsval2

Dummy variable 𝑚 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		evlsval.q	. . . 4 ⊢ 𝑄 = ((𝐼 evalSub 𝑆)‘𝑅)
2		evlsval.w	. . . 4 ⊢ 𝑊 = (𝐼 mPoly 𝑈)
3		evlsval.v	. . . 4 ⊢ 𝑉 = (𝐼 mVar 𝑈)
4		evlsval.u	. . . 4 ⊢ 𝑈 = (𝑆 ↾s 𝑅)
5		evlsval.t	. . . 4 ⊢ 𝑇 = (𝑆 ↑s (𝐵 ↑m 𝐼))
6		evlsval.b	. . . 4 ⊢ 𝐵 = (Base‘𝑆)
7		evlsval.a	. . . 4 ⊢ 𝐴 = (algSc‘𝑊)
8		evlsval.x	. . . 4 ⊢ 𝑋 = (𝑥 ∈ 𝑅 ↦ ((𝐵 ↑m 𝐼) × {𝑥}))
9		evlsval.y	. . . 4 ⊢ 𝑌 = (𝑥 ∈ 𝐼 ↦ (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)))
10	1, 2, 3, 4, 5, 6, 7, 8, 9	evlsval 22439	. . 3 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 = (℩𝑚 ∈ (𝑊 RingHom 𝑇)((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)))
11		eqid 2763	. . . . 5 ⊢ (Base‘𝑇) = (Base‘𝑇)
12		simp1 1154	. . . . 5 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝐼 ∈ 𝑍)
13	4	subrgcrng 20869	. . . . . 6 ⊢ ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑈 ∈ CRing)
14	13	3adant1 1148	. . . . 5 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑈 ∈ CRing)
15		simp2 1155	. . . . . 6 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑆 ∈ CRing)
16		ovex 7482	. . . . . 6 ⊢ (𝐵 ↑m 𝐼) ∈ V
17	5	pwscrng 20597	. . . . . 6 ⊢ ((𝑆 ∈ CRing ∧ (𝐵 ↑m 𝐼) ∈ V) → 𝑇 ∈ CRing)
18	15, 16, 17	sylancl 598	. . . . 5 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑇 ∈ CRing)
19	6	subrgss 20866	. . . . . . . . 9 ⊢ (𝑅 ∈ (SubRing‘𝑆) → 𝑅 ⊆ 𝐵)
20	19	3ad2ant3 1153	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅 ⊆ 𝐵)
21	20	resmptd 6048	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ↾ 𝑅) = (𝑥 ∈ 𝑅 ↦ ((𝐵 ↑m 𝐼) × {𝑥})))
22	21, 8	eqtr4di 2816	. . . . . 6 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ↾ 𝑅) = 𝑋)
23		crngring 20514	. . . . . . . . 9 ⊢ (𝑆 ∈ CRing → 𝑆 ∈ Ring)
24	23	3ad2ant2 1152	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑆 ∈ Ring)
25		eqid 2763	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) = (𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥}))
26	5, 6, 25	pwsdiagrhm 20901	. . . . . . . 8 ⊢ ((𝑆 ∈ Ring ∧ (𝐵 ↑m 𝐼) ∈ V) → (𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ∈ (𝑆 RingHom 𝑇))
27	24, 16, 26	sylancl 598	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ∈ (𝑆 RingHom 𝑇))
28		simp3 1156	. . . . . . 7 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑅 ∈ (SubRing‘𝑆))
29	4	resrhm 20895	. . . . . . 7 ⊢ (((𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ∈ (𝑆 RingHom 𝑇) ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ↾ 𝑅) ∈ (𝑈 RingHom 𝑇))
30	27, 28, 29	syl2anc 596	. . . . . 6 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝑥 ∈ 𝐵 ↦ ((𝐵 ↑m 𝐼) × {𝑥})) ↾ 𝑅) ∈ (𝑈 RingHom 𝑇))
31	22, 30	eqeltrrd 2865	. . . . 5 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑋 ∈ (𝑈 RingHom 𝑇))
32	6	fvexi 6928	. . . . . . . . . . 11 ⊢ 𝐵 ∈ V
33		simpl1 1210	. . . . . . . . . . 11 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → 𝐼 ∈ 𝑍)
34		elmapg 8895	. . . . . . . . . . 11 ⊢ ((𝐵 ∈ V ∧ 𝐼 ∈ 𝑍) → (𝑔 ∈ (𝐵 ↑m 𝐼) ↔ 𝑔:𝐼⟶𝐵))
35	32, 33, 34	sylancr 599	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → (𝑔 ∈ (𝐵 ↑m 𝐼) ↔ 𝑔:𝐼⟶𝐵))
36	35	biimpa 482	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) ∧ 𝑔 ∈ (𝐵 ↑m 𝐼)) → 𝑔:𝐼⟶𝐵)
37		simplr 781	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) ∧ 𝑔 ∈ (𝐵 ↑m 𝐼)) → 𝑥 ∈ 𝐼)
38	36, 37	ffvelcdmd 7115	. . . . . . . 8 ⊢ ((((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) ∧ 𝑔 ∈ (𝐵 ↑m 𝐼)) → (𝑔‘𝑥) ∈ 𝐵)
39	38	fmpttd 7145	. . . . . . 7 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)):(𝐵 ↑m 𝐼)⟶𝐵)
40		simpl2 1211	. . . . . . . 8 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → 𝑆 ∈ CRing)
41	5, 6, 11	pwselbasb 17700	. . . . . . . 8 ⊢ ((𝑆 ∈ CRing ∧ (𝐵 ↑m 𝐼) ∈ V) → ((𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)) ∈ (Base‘𝑇) ↔ (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)):(𝐵 ↑m 𝐼)⟶𝐵))
42	40, 16, 41	sylancl 598	. . . . . . 7 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → ((𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)) ∈ (Base‘𝑇) ↔ (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)):(𝐵 ↑m 𝐼)⟶𝐵))
43	39, 42	mpbird 260	. . . . . 6 ⊢ (((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) ∧ 𝑥 ∈ 𝐼) → (𝑔 ∈ (𝐵 ↑m 𝐼) ↦ (𝑔‘𝑥)) ∈ (Base‘𝑇))
44	43, 9	fmptd 7144	. . . . 5 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑌:𝐼⟶(Base‘𝑇))
45	2, 11, 7, 3, 12, 14, 18, 31, 44	evlseu 22436	. . . 4 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ∃!𝑚 ∈ (𝑊 RingHom 𝑇)((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌))
46		riotacl2 7422	. . . 4 ⊢ (∃!𝑚 ∈ (𝑊 RingHom 𝑇)((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌) → (℩𝑚 ∈ (𝑊 RingHom 𝑇)((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)) ∈ {𝑚 ∈ (𝑊 RingHom 𝑇) ∣ ((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)})
47	45, 46	syl 18	. . 3 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (℩𝑚 ∈ (𝑊 RingHom 𝑇)((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)) ∈ {𝑚 ∈ (𝑊 RingHom 𝑇) ∣ ((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)})
48	10, 47	eqeltrd 2864	. 2 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → 𝑄 ∈ {𝑚 ∈ (𝑊 RingHom 𝑇) ∣ ((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)})
49		coeq1 5844	. . . . 5 ⊢ (𝑚 = 𝑄 → (𝑚 ∘ 𝐴) = (𝑄 ∘ 𝐴))
50	49	eqeq1d 2765	. . . 4 ⊢ (𝑚 = 𝑄 → ((𝑚 ∘ 𝐴) = 𝑋 ↔ (𝑄 ∘ 𝐴) = 𝑋))
51		coeq1 5844	. . . . 5 ⊢ (𝑚 = 𝑄 → (𝑚 ∘ 𝑉) = (𝑄 ∘ 𝑉))
52	51	eqeq1d 2765	. . . 4 ⊢ (𝑚 = 𝑄 → ((𝑚 ∘ 𝑉) = 𝑌 ↔ (𝑄 ∘ 𝑉) = 𝑌))
53	50, 52	anbi12d 644	. . 3 ⊢ (𝑚 = 𝑄 → (((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌) ↔ ((𝑄 ∘ 𝐴) = 𝑋 ∧ (𝑄 ∘ 𝑉) = 𝑌)))
54	53	elrab 3648	. 2 ⊢ (𝑄 ∈ {𝑚 ∈ (𝑊 RingHom 𝑇) ∣ ((𝑚 ∘ 𝐴) = 𝑋 ∧ (𝑚 ∘ 𝑉) = 𝑌)} ↔ (𝑄 ∈ (𝑊 RingHom 𝑇) ∧ ((𝑄 ∘ 𝐴) = 𝑋 ∧ (𝑄 ∘ 𝑉) = 𝑌)))
55	48, 54	sylib 221	1 ⊢ ((𝐼 ∈ 𝑍 ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑄 ∈ (𝑊 RingHom 𝑇) ∧ ((𝑄 ∘ 𝐴) = 𝑋 ∧ (𝑄 ∘ 𝑉) = 𝑌)))

This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 401   ∧ w3a 1103   = wceq 1570   ∈ wcel 2147  ∃!wreu 3367  {crab 3416  Vcvv 3454   ⊆ wss 3900  {csn 4588   ↦ cmpt 5190   × cxp 5654   ↾ cres 5658   ∘ ccom 5660  ⟶wf 6560  ‘cfv 6564  ℩crio 7405  (class class class)co 7449   ↑_m cmap 8883  Basecbs 17428   ↾_s cress 17449   ↑_s cpws 17658  Ringcrg 20501  CRingccrg 20502   RingHom crh 20741  SubRingcsubrg 20863  algSccascl 22204   mVar cmvr 22257   mPoly cmpl 22258   evalSub ces 22425

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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5236  ax-sep 5253  ax-nul 5264  ax-pow 5332  ax-pr 5396  ax-un 7781  ax-cnex 11293  ax-resscn 11294  ax-1cn 11295  ax-icn 11296  ax-addcl 11297  ax-addrcl 11298  ax-mulcl 11299  ax-mulrcl 11300  ax-mulcom 11301  ax-addass 11302  ax-mulass 11303  ax-distr 11304  ax-i2m1 11305  ax-1ne0 11306  ax-1rid 11307  ax-rnegex 11308  ax-rrecex 11309  ax-cnre 11310  ax-pre-lttri 11311  ax-pre-lttrn 11312  ax-pre-ltadd 11313  ax-pre-mulgt0 11314

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 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-tp 4593  df-op 4839  df-uni 4871  df-int 4911  df-iun 4956  df-iin 4957  df-br 5107  df-opab 5172  df-mpt 5191  df-tr 5217  df-id 5551  df-eprel 5556  df-po 5564  df-so 5565  df-fr 5609  df-se 5610  df-we 5611  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-res 5668  df-ima 5669  df-pred 6328  df-ord 6389  df-on 6390  df-lim 6391  df-suc 6392  df-iota 6518  df-fun 6566  df-fn 6567  df-f 6568  df-f1 6569  df-fo 6570  df-f1o 6571  df-fv 6572  df-isom 6573  df-riota 7406  df-ov 7452  df-oprab 7453  df-mpo 7454  df-of 7723  df-ofr 7724  df-om 7910  df-1st 8033  df-2nd 8034  df-supp 8213  df-frecs 8335  df-wrecs 8366  df-recs 8415  df-rdg 8454  df-1o 8512  df-2o 8513  df-er 8753  df-map 8885  df-pm 8886  df-ixp 8962  df-en 9010  df-dom 9011  df-sdom 9012  df-fin 9013  df-fsupp 9390  df-sup 9469  df-oi 9539  df-card 10055  df-pnf 11382  df-mnf 11383  df-xr 11384  df-ltxr 11385  df-le 11386  df-sub 11580  df-neg 11581  df-nn 12374  df-2 12443  df-3 12444  df-4 12445  df-5 12446  df-6 12447  df-7 12448  df-8 12449  df-9 12450  df-n0 12645  df-z 12732  df-dec 12853  df-uz 13004  df-fz 13678  df-fzo 13827  df-seq 14183  df-hash 14514  df-struct 17366  df-sets 17383  df-slot 17401  df-ndx 17413  df-base 17429  df-ress 17450  df-plusg 17482  df-mulr 17483  df-sca 17485  df-vsca 17486  df-ip 17487  df-tset 17488  df-ple 17489  df-ds 17491  df-hom 17493  df-cco 17494  df-0g 17653  df-gsum 17654  df-prds 17659  df-pws 17661  df-mre 17797  df-mrc 17798  df-acs 17800  df-mgm 18857  df-sgrp 18949  df-mnd 18965  df-mhm 19019  df-submnd 19020  df-grp 19188  df-minusg 19189  df-sbg 19190  df-mulg 19319  df-subg 19374  df-ghm 19469  df-cntz 19573  df-cmn 20038  df-abl 20039  df-mgp 20403  df-rng 20417  df-ur 20450  df-srg 20455  df-ring 20503  df-cring 20504  df-rhm 20744  df-subrng 20840  df-subrg 20864  df-lmod 21179  df-lss 21249  df-lsp 21289  df-assa 22205  df-asp 22206  df-ascl 22207  df-psr 22261  df-mvr 22262  df-mpl 22263  df-evls 22427

This theorem is used by:  evlsrhm  22441  evlssca  22447  evlsvar  22448