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Theorem mpfind 19357
Description: Prove a property of polynomials by "structural" induction, under a simplified model of structure which loses the sum of products structure. (Contributed by Mario Carneiro, 19-Mar-2015.)
Hypotheses
Ref Expression
mpfind.cb 𝐵 = (Base‘𝑆)
mpfind.cp + = (+g𝑆)
mpfind.ct · = (.r𝑆)
mpfind.cq 𝑄 = ran ((𝐼 evalSub 𝑆)‘𝑅)
mpfind.ad ((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜁)
mpfind.mu ((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜎)
mpfind.wa (𝑥 = ((𝐵𝑚 𝐼) × {𝑓}) → (𝜓𝜒))
mpfind.wb (𝑥 = (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) → (𝜓𝜃))
mpfind.wc (𝑥 = 𝑓 → (𝜓𝜏))
mpfind.wd (𝑥 = 𝑔 → (𝜓𝜂))
mpfind.we (𝑥 = (𝑓𝑓 + 𝑔) → (𝜓𝜁))
mpfind.wf (𝑥 = (𝑓𝑓 · 𝑔) → (𝜓𝜎))
mpfind.wg (𝑥 = 𝐴 → (𝜓𝜌))
mpfind.co ((𝜑𝑓𝑅) → 𝜒)
mpfind.pr ((𝜑𝑓𝐼) → 𝜃)
mpfind.a (𝜑𝐴𝑄)
Assertion
Ref Expression
mpfind (𝜑𝜌)
Distinct variable groups:   𝜒,𝑥   𝜂,𝑥   𝜑,𝑓,𝑔   𝜓,𝑓,𝑔   𝜌,𝑥   𝜎,𝑥   𝜏,𝑥   𝜃,𝑥   𝜁,𝑥   𝑥,𝐴   𝐵,𝑓,𝑔,𝑥   𝑓,𝐼,𝑔,𝑥   + ,𝑓,𝑔,𝑥   𝑄,𝑓,𝑔   𝑅,𝑓,𝑔   𝑆,𝑓,𝑔   · ,𝑓,𝑔,𝑥
Allowed substitution hints:   𝜑(𝑥)   𝜓(𝑥)   𝜒(𝑓,𝑔)   𝜃(𝑓,𝑔)   𝜏(𝑓,𝑔)   𝜂(𝑓,𝑔)   𝜁(𝑓,𝑔)   𝜎(𝑓,𝑔)   𝜌(𝑓,𝑔)   𝐴(𝑓,𝑔)   𝑄(𝑥)   𝑅(𝑥)   𝑆(𝑥)

Proof of Theorem mpfind
Dummy variables 𝑖 𝑗 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mpfind.a . . . . 5 (𝜑𝐴𝑄)
2 mpfind.cq . . . . 5 𝑄 = ran ((𝐼 evalSub 𝑆)‘𝑅)
31, 2syl6eleq 2698 . . . 4 (𝜑𝐴 ∈ ran ((𝐼 evalSub 𝑆)‘𝑅))
42mpfrcl 19339 . . . . . . . . 9 (𝐴𝑄 → (𝐼 ∈ V ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)))
51, 4syl 17 . . . . . . . 8 (𝜑 → (𝐼 ∈ V ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)))
6 eqid 2610 . . . . . . . . 9 ((𝐼 evalSub 𝑆)‘𝑅) = ((𝐼 evalSub 𝑆)‘𝑅)
7 eqid 2610 . . . . . . . . 9 (𝐼 mPoly (𝑆s 𝑅)) = (𝐼 mPoly (𝑆s 𝑅))
8 eqid 2610 . . . . . . . . 9 (𝑆s 𝑅) = (𝑆s 𝑅)
9 eqid 2610 . . . . . . . . 9 (𝑆s (𝐵𝑚 𝐼)) = (𝑆s (𝐵𝑚 𝐼))
10 mpfind.cb . . . . . . . . 9 𝐵 = (Base‘𝑆)
116, 7, 8, 9, 10evlsrhm 19342 . . . . . . . 8 ((𝐼 ∈ V ∧ 𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) RingHom (𝑆s (𝐵𝑚 𝐼))))
125, 11syl 17 . . . . . . 7 (𝜑 → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) RingHom (𝑆s (𝐵𝑚 𝐼))))
13 eqid 2610 . . . . . . . 8 (Base‘(𝐼 mPoly (𝑆s 𝑅))) = (Base‘(𝐼 mPoly (𝑆s 𝑅)))
14 eqid 2610 . . . . . . . 8 (Base‘(𝑆s (𝐵𝑚 𝐼))) = (Base‘(𝑆s (𝐵𝑚 𝐼)))
1513, 14rhmf 18549 . . . . . . 7 (((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) RingHom (𝑆s (𝐵𝑚 𝐼))) → ((𝐼 evalSub 𝑆)‘𝑅):(Base‘(𝐼 mPoly (𝑆s 𝑅)))⟶(Base‘(𝑆s (𝐵𝑚 𝐼))))
1612, 15syl 17 . . . . . 6 (𝜑 → ((𝐼 evalSub 𝑆)‘𝑅):(Base‘(𝐼 mPoly (𝑆s 𝑅)))⟶(Base‘(𝑆s (𝐵𝑚 𝐼))))
17 ffn 5958 . . . . . 6 (((𝐼 evalSub 𝑆)‘𝑅):(Base‘(𝐼 mPoly (𝑆s 𝑅)))⟶(Base‘(𝑆s (𝐵𝑚 𝐼))) → ((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))))
1816, 17syl 17 . . . . 5 (𝜑 → ((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))))
19 fvelrnb 6153 . . . . 5 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → (𝐴 ∈ ran ((𝐼 evalSub 𝑆)‘𝑅) ↔ ∃𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴))
2018, 19syl 17 . . . 4 (𝜑 → (𝐴 ∈ ran ((𝐼 evalSub 𝑆)‘𝑅) ↔ ∃𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴))
213, 20mpbid 221 . . 3 (𝜑 → ∃𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴)
22 ffun 5961 . . . . . . . 8 (((𝐼 evalSub 𝑆)‘𝑅):(Base‘(𝐼 mPoly (𝑆s 𝑅)))⟶(Base‘(𝑆s (𝐵𝑚 𝐼))) → Fun ((𝐼 evalSub 𝑆)‘𝑅))
2316, 22syl 17 . . . . . . 7 (𝜑 → Fun ((𝐼 evalSub 𝑆)‘𝑅))
2423adantr 480 . . . . . 6 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → Fun ((𝐼 evalSub 𝑆)‘𝑅))
25 eqid 2610 . . . . . . 7 (Base‘(𝑆s 𝑅)) = (Base‘(𝑆s 𝑅))
26 eqid 2610 . . . . . . 7 (𝐼 mVar (𝑆s 𝑅)) = (𝐼 mVar (𝑆s 𝑅))
27 eqid 2610 . . . . . . 7 (+g‘(𝐼 mPoly (𝑆s 𝑅))) = (+g‘(𝐼 mPoly (𝑆s 𝑅)))
28 eqid 2610 . . . . . . 7 (.r‘(𝐼 mPoly (𝑆s 𝑅))) = (.r‘(𝐼 mPoly (𝑆s 𝑅)))
29 eqid 2610 . . . . . . 7 (algSc‘(𝐼 mPoly (𝑆s 𝑅))) = (algSc‘(𝐼 mPoly (𝑆s 𝑅)))
305simp1d 1066 . . . . . . . . . . . 12 (𝜑𝐼 ∈ V)
315simp2d 1067 . . . . . . . . . . . . . 14 (𝜑𝑆 ∈ CRing)
325simp3d 1068 . . . . . . . . . . . . . 14 (𝜑𝑅 ∈ (SubRing‘𝑆))
338subrgcrng 18607 . . . . . . . . . . . . . 14 ((𝑆 ∈ CRing ∧ 𝑅 ∈ (SubRing‘𝑆)) → (𝑆s 𝑅) ∈ CRing)
3431, 32, 33syl2anc 691 . . . . . . . . . . . . 13 (𝜑 → (𝑆s 𝑅) ∈ CRing)
35 crngring 18381 . . . . . . . . . . . . 13 ((𝑆s 𝑅) ∈ CRing → (𝑆s 𝑅) ∈ Ring)
3634, 35syl 17 . . . . . . . . . . . 12 (𝜑 → (𝑆s 𝑅) ∈ Ring)
377mplring 19273 . . . . . . . . . . . 12 ((𝐼 ∈ V ∧ (𝑆s 𝑅) ∈ Ring) → (𝐼 mPoly (𝑆s 𝑅)) ∈ Ring)
3830, 36, 37syl2anc 691 . . . . . . . . . . 11 (𝜑 → (𝐼 mPoly (𝑆s 𝑅)) ∈ Ring)
3938adantr 480 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝐼 mPoly (𝑆s 𝑅)) ∈ Ring)
40 simprl 790 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
41 elpreima 6245 . . . . . . . . . . . . . 14 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})))
4218, 41syl 17 . . . . . . . . . . . . 13 (𝜑 → (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})))
4342adantr 480 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})))
4440, 43mpbid 221 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}))
4544simpld 474 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
46 simprr 792 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
47 elpreima 6245 . . . . . . . . . . . . . 14 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → (𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})))
4818, 47syl 17 . . . . . . . . . . . . 13 (𝜑 → (𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})))
4948adantr 480 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})))
5046, 49mpbid 221 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))
5150simpld 474 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
5213, 27ringacl 18401 . . . . . . . . . 10 (((𝐼 mPoly (𝑆s 𝑅)) ∈ Ring ∧ 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
5339, 45, 51, 52syl3anc 1318 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
54 rhmghm 18548 . . . . . . . . . . . . . 14 (((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) RingHom (𝑆s (𝐵𝑚 𝐼))) → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) GrpHom (𝑆s (𝐵𝑚 𝐼))))
5512, 54syl 17 . . . . . . . . . . . . 13 (𝜑 → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) GrpHom (𝑆s (𝐵𝑚 𝐼))))
5655adantr 480 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) GrpHom (𝑆s (𝐵𝑚 𝐼))))
57 eqid 2610 . . . . . . . . . . . . 13 (+g‘(𝑆s (𝐵𝑚 𝐼))) = (+g‘(𝑆s (𝐵𝑚 𝐼)))
5813, 27, 57ghmlin 17488 . . . . . . . . . . . 12 ((((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) GrpHom (𝑆s (𝐵𝑚 𝐼))) ∧ 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(+g‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
5956, 45, 51, 58syl3anc 1318 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(+g‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
6031adantr 480 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝑆 ∈ CRing)
61 ovex 6577 . . . . . . . . . . . . 13 (𝐵𝑚 𝐼) ∈ V
6261a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝐵𝑚 𝐼) ∈ V)
6316adantr 480 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝐼 evalSub 𝑆)‘𝑅):(Base‘(𝐼 mPoly (𝑆s 𝑅)))⟶(Base‘(𝑆s (𝐵𝑚 𝐼))))
6463, 45ffvelrnd 6268 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ (Base‘(𝑆s (𝐵𝑚 𝐼))))
6563, 51ffvelrnd 6268 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ (Base‘(𝑆s (𝐵𝑚 𝐼))))
66 mpfind.cp . . . . . . . . . . . 12 + = (+g𝑆)
679, 14, 60, 62, 64, 65, 66, 57pwsplusgval 15973 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(+g‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
6859, 67eqtrd 2644 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
69 simpl 472 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → 𝜑)
7018adantr 480 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))))
71 fnfvelrn 6264 . . . . . . . . . . . . . 14 ((((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ ran ((𝐼 evalSub 𝑆)‘𝑅))
7270, 45, 71syl2anc 691 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ ran ((𝐼 evalSub 𝑆)‘𝑅))
7372, 2syl6eleqr 2699 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄)
7423adantr 480 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → Fun ((𝐼 evalSub 𝑆)‘𝑅))
75 fvimacnvi 6239 . . . . . . . . . . . . 13 ((Fun ((𝐼 evalSub 𝑆)‘𝑅) ∧ 𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓})) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})
7674, 40, 75syl2anc 691 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})
7773, 76jca 553 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}))
78 fnfvelrn 6264 . . . . . . . . . . . . . 14 ((((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ ran ((𝐼 evalSub 𝑆)‘𝑅))
7970, 51, 78syl2anc 691 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ ran ((𝐼 evalSub 𝑆)‘𝑅))
8079, 2syl6eleqr 2699 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄)
81 fvimacnvi 6239 . . . . . . . . . . . . 13 ((Fun ((𝐼 evalSub 𝑆)‘𝑅) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓})) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})
8274, 46, 81syl2anc 691 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})
8380, 82jca 553 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))
84 fvex 6113 . . . . . . . . . . . 12 (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ V
85 fvex 6113 . . . . . . . . . . . 12 (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ V
86 eleq1 2676 . . . . . . . . . . . . . . . 16 (𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) → (𝑓𝑄 ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄))
87 vex 3176 . . . . . . . . . . . . . . . . . 18 𝑓 ∈ V
88 mpfind.wc . . . . . . . . . . . . . . . . . 18 (𝑥 = 𝑓 → (𝜓𝜏))
8987, 88elab 3319 . . . . . . . . . . . . . . . . 17 (𝑓 ∈ {𝑥𝜓} ↔ 𝜏)
90 eleq1 2676 . . . . . . . . . . . . . . . . 17 (𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) → (𝑓 ∈ {𝑥𝜓} ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}))
9189, 90syl5bbr 273 . . . . . . . . . . . . . . . 16 (𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) → (𝜏 ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}))
9286, 91anbi12d 743 . . . . . . . . . . . . . . 15 (𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) → ((𝑓𝑄𝜏) ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓})))
93 eleq1 2676 . . . . . . . . . . . . . . . 16 (𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) → (𝑔𝑄 ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄))
94 vex 3176 . . . . . . . . . . . . . . . . . 18 𝑔 ∈ V
95 mpfind.wd . . . . . . . . . . . . . . . . . 18 (𝑥 = 𝑔 → (𝜓𝜂))
9694, 95elab 3319 . . . . . . . . . . . . . . . . 17 (𝑔 ∈ {𝑥𝜓} ↔ 𝜂)
97 eleq1 2676 . . . . . . . . . . . . . . . . 17 (𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) → (𝑔 ∈ {𝑥𝜓} ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))
9896, 97syl5bbr 273 . . . . . . . . . . . . . . . 16 (𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) → (𝜂 ↔ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))
9993, 98anbi12d 743 . . . . . . . . . . . . . . 15 (𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) → ((𝑔𝑄𝜂) ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})))
10092, 99bi2anan9 913 . . . . . . . . . . . . . 14 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂)) ↔ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))))
101100anbi2d 736 . . . . . . . . . . . . 13 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → ((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) ↔ (𝜑 ∧ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓})))))
102 ovex 6577 . . . . . . . . . . . . . . 15 (𝑓𝑓 + 𝑔) ∈ V
103 mpfind.we . . . . . . . . . . . . . . 15 (𝑥 = (𝑓𝑓 + 𝑔) → (𝜓𝜁))
104102, 103elab 3319 . . . . . . . . . . . . . 14 ((𝑓𝑓 + 𝑔) ∈ {𝑥𝜓} ↔ 𝜁)
105 oveq12 6558 . . . . . . . . . . . . . . 15 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (𝑓𝑓 + 𝑔) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
106105eleq1d 2672 . . . . . . . . . . . . . 14 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → ((𝑓𝑓 + 𝑔) ∈ {𝑥𝜓} ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓}))
107104, 106syl5bbr 273 . . . . . . . . . . . . 13 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (𝜁 ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓}))
108101, 107imbi12d 333 . . . . . . . . . . . 12 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜁) ↔ ((𝜑 ∧ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})))
109 mpfind.ad . . . . . . . . . . . 12 ((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜁)
11084, 85, 108, 109vtocl2 3234 . . . . . . . . . . 11 ((𝜑 ∧ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})
11169, 77, 83, 110syl12anc 1316 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 + (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})
11268, 111eqeltrd 2688 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})
113 elpreima 6245 . . . . . . . . . . 11 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
11418, 113syl 17 . . . . . . . . . 10 (𝜑 → ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
115114adantr 480 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
11653, 112, 115mpbir2and 959 . . . . . . . 8 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
117116adantlr 747 . . . . . . 7 (((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(+g‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
11813, 28ringcl 18384 . . . . . . . . . 10 (((𝐼 mPoly (𝑆s 𝑅)) ∈ Ring ∧ 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
11939, 45, 51, 118syl3anc 1318 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
120 eqid 2610 . . . . . . . . . . . . . . 15 (mulGrp‘(𝐼 mPoly (𝑆s 𝑅))) = (mulGrp‘(𝐼 mPoly (𝑆s 𝑅)))
121 eqid 2610 . . . . . . . . . . . . . . 15 (mulGrp‘(𝑆s (𝐵𝑚 𝐼))) = (mulGrp‘(𝑆s (𝐵𝑚 𝐼)))
122120, 121rhmmhm 18545 . . . . . . . . . . . . . 14 (((𝐼 evalSub 𝑆)‘𝑅) ∈ ((𝐼 mPoly (𝑆s 𝑅)) RingHom (𝑆s (𝐵𝑚 𝐼))) → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((mulGrp‘(𝐼 mPoly (𝑆s 𝑅))) MndHom (mulGrp‘(𝑆s (𝐵𝑚 𝐼)))))
12312, 122syl 17 . . . . . . . . . . . . 13 (𝜑 → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((mulGrp‘(𝐼 mPoly (𝑆s 𝑅))) MndHom (mulGrp‘(𝑆s (𝐵𝑚 𝐼)))))
124123adantr 480 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝐼 evalSub 𝑆)‘𝑅) ∈ ((mulGrp‘(𝐼 mPoly (𝑆s 𝑅))) MndHom (mulGrp‘(𝑆s (𝐵𝑚 𝐼)))))
125120, 13mgpbas 18318 . . . . . . . . . . . . 13 (Base‘(𝐼 mPoly (𝑆s 𝑅))) = (Base‘(mulGrp‘(𝐼 mPoly (𝑆s 𝑅))))
126120, 28mgpplusg 18316 . . . . . . . . . . . . 13 (.r‘(𝐼 mPoly (𝑆s 𝑅))) = (+g‘(mulGrp‘(𝐼 mPoly (𝑆s 𝑅))))
127 eqid 2610 . . . . . . . . . . . . . 14 (.r‘(𝑆s (𝐵𝑚 𝐼))) = (.r‘(𝑆s (𝐵𝑚 𝐼)))
128121, 127mgpplusg 18316 . . . . . . . . . . . . 13 (.r‘(𝑆s (𝐵𝑚 𝐼))) = (+g‘(mulGrp‘(𝑆s (𝐵𝑚 𝐼))))
129125, 126, 128mhmlin 17165 . . . . . . . . . . . 12 ((((𝐼 evalSub 𝑆)‘𝑅) ∈ ((mulGrp‘(𝐼 mPoly (𝑆s 𝑅))) MndHom (mulGrp‘(𝑆s (𝐵𝑚 𝐼)))) ∧ 𝑖 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ 𝑗 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(.r‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
130124, 45, 51, 129syl3anc 1318 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(.r‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
131 mpfind.ct . . . . . . . . . . . 12 · = (.r𝑆)
1329, 14, 60, 62, 64, 65, 131, 127pwsmulrval 15974 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖)(.r‘(𝑆s (𝐵𝑚 𝐼)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
133130, 132eqtrd 2644 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
134 ovex 6577 . . . . . . . . . . . . . . 15 (𝑓𝑓 · 𝑔) ∈ V
135 mpfind.wf . . . . . . . . . . . . . . 15 (𝑥 = (𝑓𝑓 · 𝑔) → (𝜓𝜎))
136134, 135elab 3319 . . . . . . . . . . . . . 14 ((𝑓𝑓 · 𝑔) ∈ {𝑥𝜓} ↔ 𝜎)
137 oveq12 6558 . . . . . . . . . . . . . . 15 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (𝑓𝑓 · 𝑔) = ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)))
138137eleq1d 2672 . . . . . . . . . . . . . 14 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → ((𝑓𝑓 · 𝑔) ∈ {𝑥𝜓} ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓}))
139136, 138syl5bbr 273 . . . . . . . . . . . . 13 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (𝜎 ↔ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓}))
140101, 139imbi12d 333 . . . . . . . . . . . 12 ((𝑓 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∧ 𝑔 = (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) → (((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜎) ↔ ((𝜑 ∧ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})))
141 mpfind.mu . . . . . . . . . . . 12 ((𝜑 ∧ ((𝑓𝑄𝜏) ∧ (𝑔𝑄𝜂))) → 𝜎)
14284, 85, 140, 141vtocl2 3234 . . . . . . . . . . 11 ((𝜑 ∧ (((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∈ {𝑥𝜓}) ∧ ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ 𝑄 ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗) ∈ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})
14369, 77, 83, 142syl12anc 1316 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑖) ∘𝑓 · (((𝐼 evalSub 𝑆)‘𝑅)‘𝑗)) ∈ {𝑥𝜓})
144133, 143eqeltrd 2688 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})
145 elpreima 6245 . . . . . . . . . . 11 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
14618, 145syl 17 . . . . . . . . . 10 (𝜑 → ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
147146adantr 480 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ ((𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘(𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗)) ∈ {𝑥𝜓})))
148119, 144, 147mpbir2and 959 . . . . . . . 8 ((𝜑 ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
149148adantlr 747 . . . . . . 7 (((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) ∧ (𝑖 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ∧ 𝑗 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))) → (𝑖(.r‘(𝐼 mPoly (𝑆s 𝑅)))𝑗) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
1507mplassa 19275 . . . . . . . . . . . . . 14 ((𝐼 ∈ V ∧ (𝑆s 𝑅) ∈ CRing) → (𝐼 mPoly (𝑆s 𝑅)) ∈ AssAlg)
15130, 34, 150syl2anc 691 . . . . . . . . . . . . 13 (𝜑 → (𝐼 mPoly (𝑆s 𝑅)) ∈ AssAlg)
152 eqid 2610 . . . . . . . . . . . . . 14 (Scalar‘(𝐼 mPoly (𝑆s 𝑅))) = (Scalar‘(𝐼 mPoly (𝑆s 𝑅)))
15329, 152asclrhm 19163 . . . . . . . . . . . . 13 ((𝐼 mPoly (𝑆s 𝑅)) ∈ AssAlg → (algSc‘(𝐼 mPoly (𝑆s 𝑅))) ∈ ((Scalar‘(𝐼 mPoly (𝑆s 𝑅))) RingHom (𝐼 mPoly (𝑆s 𝑅))))
154151, 153syl 17 . . . . . . . . . . . 12 (𝜑 → (algSc‘(𝐼 mPoly (𝑆s 𝑅))) ∈ ((Scalar‘(𝐼 mPoly (𝑆s 𝑅))) RingHom (𝐼 mPoly (𝑆s 𝑅))))
155 eqid 2610 . . . . . . . . . . . . 13 (Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅)))) = (Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅))))
156155, 13rhmf 18549 . . . . . . . . . . . 12 ((algSc‘(𝐼 mPoly (𝑆s 𝑅))) ∈ ((Scalar‘(𝐼 mPoly (𝑆s 𝑅))) RingHom (𝐼 mPoly (𝑆s 𝑅))) → (algSc‘(𝐼 mPoly (𝑆s 𝑅))):(Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅))))⟶(Base‘(𝐼 mPoly (𝑆s 𝑅))))
157154, 156syl 17 . . . . . . . . . . 11 (𝜑 → (algSc‘(𝐼 mPoly (𝑆s 𝑅))):(Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅))))⟶(Base‘(𝐼 mPoly (𝑆s 𝑅))))
158157adantr 480 . . . . . . . . . 10 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → (algSc‘(𝐼 mPoly (𝑆s 𝑅))):(Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅))))⟶(Base‘(𝐼 mPoly (𝑆s 𝑅))))
1597, 30, 34mplsca 19266 . . . . . . . . . . . . 13 (𝜑 → (𝑆s 𝑅) = (Scalar‘(𝐼 mPoly (𝑆s 𝑅))))
160159fveq2d 6107 . . . . . . . . . . . 12 (𝜑 → (Base‘(𝑆s 𝑅)) = (Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅)))))
161160eleq2d 2673 . . . . . . . . . . 11 (𝜑 → (𝑖 ∈ (Base‘(𝑆s 𝑅)) ↔ 𝑖 ∈ (Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅))))))
162161biimpa 500 . . . . . . . . . 10 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → 𝑖 ∈ (Base‘(Scalar‘(𝐼 mPoly (𝑆s 𝑅)))))
163158, 162ffvelrnd 6268 . . . . . . . . 9 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → ((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
16430adantr 480 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → 𝐼 ∈ V)
16531adantr 480 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → 𝑆 ∈ CRing)
16632adantr 480 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → 𝑅 ∈ (SubRing‘𝑆))
16710subrgss 18604 . . . . . . . . . . . . . . 15 (𝑅 ∈ (SubRing‘𝑆) → 𝑅𝐵)
16832, 167syl 17 . . . . . . . . . . . . . 14 (𝜑𝑅𝐵)
1698, 10ressbas2 15758 . . . . . . . . . . . . . 14 (𝑅𝐵𝑅 = (Base‘(𝑆s 𝑅)))
170168, 169syl 17 . . . . . . . . . . . . 13 (𝜑𝑅 = (Base‘(𝑆s 𝑅)))
171170eleq2d 2673 . . . . . . . . . . . 12 (𝜑 → (𝑖𝑅𝑖 ∈ (Base‘(𝑆s 𝑅))))
172171biimpar 501 . . . . . . . . . . 11 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → 𝑖𝑅)
1736, 7, 8, 10, 29, 164, 165, 166, 172evlssca 19343 . . . . . . . . . 10 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → (((𝐼 evalSub 𝑆)‘𝑅)‘((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖)) = ((𝐵𝑚 𝐼) × {𝑖}))
174 mpfind.co . . . . . . . . . . . . . 14 ((𝜑𝑓𝑅) → 𝜒)
175174ralrimiva 2949 . . . . . . . . . . . . 13 (𝜑 → ∀𝑓𝑅 𝜒)
176 snex 4835 . . . . . . . . . . . . . . . . 17 {𝑓} ∈ V
17761, 176xpex 6860 . . . . . . . . . . . . . . . 16 ((𝐵𝑚 𝐼) × {𝑓}) ∈ V
178 mpfind.wa . . . . . . . . . . . . . . . 16 (𝑥 = ((𝐵𝑚 𝐼) × {𝑓}) → (𝜓𝜒))
179177, 178elab 3319 . . . . . . . . . . . . . . 15 (((𝐵𝑚 𝐼) × {𝑓}) ∈ {𝑥𝜓} ↔ 𝜒)
180 sneq 4135 . . . . . . . . . . . . . . . . 17 (𝑓 = 𝑖 → {𝑓} = {𝑖})
181180xpeq2d 5063 . . . . . . . . . . . . . . . 16 (𝑓 = 𝑖 → ((𝐵𝑚 𝐼) × {𝑓}) = ((𝐵𝑚 𝐼) × {𝑖}))
182181eleq1d 2672 . . . . . . . . . . . . . . 15 (𝑓 = 𝑖 → (((𝐵𝑚 𝐼) × {𝑓}) ∈ {𝑥𝜓} ↔ ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓}))
183179, 182syl5bbr 273 . . . . . . . . . . . . . 14 (𝑓 = 𝑖 → (𝜒 ↔ ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓}))
184183cbvralv 3147 . . . . . . . . . . . . 13 (∀𝑓𝑅 𝜒 ↔ ∀𝑖𝑅 ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓})
185175, 184sylib 207 . . . . . . . . . . . 12 (𝜑 → ∀𝑖𝑅 ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓})
186185r19.21bi 2916 . . . . . . . . . . 11 ((𝜑𝑖𝑅) → ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓})
187172, 186syldan 486 . . . . . . . . . 10 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → ((𝐵𝑚 𝐼) × {𝑖}) ∈ {𝑥𝜓})
188173, 187eqeltrd 2688 . . . . . . . . 9 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → (((𝐼 evalSub 𝑆)‘𝑅)‘((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖)) ∈ {𝑥𝜓})
189 elpreima 6245 . . . . . . . . . . 11 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖)) ∈ {𝑥𝜓})))
19018, 189syl 17 . . . . . . . . . 10 (𝜑 → (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖)) ∈ {𝑥𝜓})))
191190adantr 480 . . . . . . . . 9 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖)) ∈ {𝑥𝜓})))
192163, 188, 191mpbir2and 959 . . . . . . . 8 ((𝜑𝑖 ∈ (Base‘(𝑆s 𝑅))) → ((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
193192adantlr 747 . . . . . . 7 (((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) ∧ 𝑖 ∈ (Base‘(𝑆s 𝑅))) → ((algSc‘(𝐼 mPoly (𝑆s 𝑅)))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
19430adantr 480 . . . . . . . . . 10 ((𝜑𝑖𝐼) → 𝐼 ∈ V)
19536adantr 480 . . . . . . . . . 10 ((𝜑𝑖𝐼) → (𝑆s 𝑅) ∈ Ring)
196 simpr 476 . . . . . . . . . 10 ((𝜑𝑖𝐼) → 𝑖𝐼)
1977, 26, 13, 194, 195, 196mvrcl 19270 . . . . . . . . 9 ((𝜑𝑖𝐼) → ((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
19831adantr 480 . . . . . . . . . . 11 ((𝜑𝑖𝐼) → 𝑆 ∈ CRing)
19932adantr 480 . . . . . . . . . . 11 ((𝜑𝑖𝐼) → 𝑅 ∈ (SubRing‘𝑆))
2006, 26, 8, 10, 194, 198, 199, 196evlsvar 19344 . . . . . . . . . 10 ((𝜑𝑖𝐼) → (((𝐼 evalSub 𝑆)‘𝑅)‘((𝐼 mVar (𝑆s 𝑅))‘𝑖)) = (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)))
201 mpfind.pr . . . . . . . . . . . . . 14 ((𝜑𝑓𝐼) → 𝜃)
20261mptex 6390 . . . . . . . . . . . . . . 15 (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ V
203 mpfind.wb . . . . . . . . . . . . . . 15 (𝑥 = (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) → (𝜓𝜃))
204202, 203elab 3319 . . . . . . . . . . . . . 14 ((𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ {𝑥𝜓} ↔ 𝜃)
205201, 204sylibr 223 . . . . . . . . . . . . 13 ((𝜑𝑓𝐼) → (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ {𝑥𝜓})
206205ralrimiva 2949 . . . . . . . . . . . 12 (𝜑 → ∀𝑓𝐼 (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ {𝑥𝜓})
207 fveq2 6103 . . . . . . . . . . . . . . 15 (𝑓 = 𝑖 → (𝑔𝑓) = (𝑔𝑖))
208207mpteq2dv 4673 . . . . . . . . . . . . . 14 (𝑓 = 𝑖 → (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) = (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)))
209208eleq1d 2672 . . . . . . . . . . . . 13 (𝑓 = 𝑖 → ((𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ {𝑥𝜓} ↔ (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)) ∈ {𝑥𝜓}))
210209cbvralv 3147 . . . . . . . . . . . 12 (∀𝑓𝐼 (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑓)) ∈ {𝑥𝜓} ↔ ∀𝑖𝐼 (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)) ∈ {𝑥𝜓})
211206, 210sylib 207 . . . . . . . . . . 11 (𝜑 → ∀𝑖𝐼 (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)) ∈ {𝑥𝜓})
212211r19.21bi 2916 . . . . . . . . . 10 ((𝜑𝑖𝐼) → (𝑔 ∈ (𝐵𝑚 𝐼) ↦ (𝑔𝑖)) ∈ {𝑥𝜓})
213200, 212eqeltrd 2688 . . . . . . . . 9 ((𝜑𝑖𝐼) → (((𝐼 evalSub 𝑆)‘𝑅)‘((𝐼 mVar (𝑆s 𝑅))‘𝑖)) ∈ {𝑥𝜓})
214 elpreima 6245 . . . . . . . . . . 11 (((𝐼 evalSub 𝑆)‘𝑅) Fn (Base‘(𝐼 mPoly (𝑆s 𝑅))) → (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((𝐼 mVar (𝑆s 𝑅))‘𝑖)) ∈ {𝑥𝜓})))
21518, 214syl 17 . . . . . . . . . 10 (𝜑 → (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((𝐼 mVar (𝑆s 𝑅))‘𝑖)) ∈ {𝑥𝜓})))
216215adantr 480 . . . . . . . . 9 ((𝜑𝑖𝐼) → (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}) ↔ (((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))) ∧ (((𝐼 evalSub 𝑆)‘𝑅)‘((𝐼 mVar (𝑆s 𝑅))‘𝑖)) ∈ {𝑥𝜓})))
217197, 213, 216mpbir2and 959 . . . . . . . 8 ((𝜑𝑖𝐼) → ((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
218217adantlr 747 . . . . . . 7 (((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) ∧ 𝑖𝐼) → ((𝐼 mVar (𝑆s 𝑅))‘𝑖) ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
219 simpr 476 . . . . . . 7 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → 𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅))))
22030adantr 480 . . . . . . 7 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → 𝐼 ∈ V)
22134adantr 480 . . . . . . 7 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (𝑆s 𝑅) ∈ CRing)
22225, 26, 7, 27, 28, 29, 13, 117, 149, 193, 218, 219, 220, 221mplind 19323 . . . . . 6 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → 𝑦 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓}))
223 fvimacnvi 6239 . . . . . 6 ((Fun ((𝐼 evalSub 𝑆)‘𝑅) ∧ 𝑦 ∈ (((𝐼 evalSub 𝑆)‘𝑅) “ {𝑥𝜓})) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) ∈ {𝑥𝜓})
22424, 222, 223syl2anc 691 . . . . 5 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → (((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) ∈ {𝑥𝜓})
225 eleq1 2676 . . . . 5 ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴 → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) ∈ {𝑥𝜓} ↔ 𝐴 ∈ {𝑥𝜓}))
226224, 225syl5ibcom 234 . . . 4 ((𝜑𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))) → ((((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴𝐴 ∈ {𝑥𝜓}))
227226rexlimdva 3013 . . 3 (𝜑 → (∃𝑦 ∈ (Base‘(𝐼 mPoly (𝑆s 𝑅)))(((𝐼 evalSub 𝑆)‘𝑅)‘𝑦) = 𝐴𝐴 ∈ {𝑥𝜓}))
22821, 227mpd 15 . 2 (𝜑𝐴 ∈ {𝑥𝜓})
229 mpfind.wg . . . 4 (𝑥 = 𝐴 → (𝜓𝜌))
230229elabg 3320 . . 3 (𝐴𝑄 → (𝐴 ∈ {𝑥𝜓} ↔ 𝜌))
2311, 230syl 17 . 2 (𝜑 → (𝐴 ∈ {𝑥𝜓} ↔ 𝜌))
232228, 231mpbid 221 1 (𝜑𝜌)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 195  wa 383  w3a 1031   = wceq 1475  wcel 1977  {cab 2596  wral 2896  wrex 2897  Vcvv 3173  wss 3540  {csn 4125  cmpt 4643   × cxp 5036  ccnv 5037  ran crn 5039  cima 5041  Fun wfun 5798   Fn wfn 5799  wf 5800  cfv 5804  (class class class)co 6549  𝑓 cof 6793  𝑚 cmap 7744  Basecbs 15695  s cress 15696  +gcplusg 15768  .rcmulr 15769  Scalarcsca 15771  s cpws 15930   MndHom cmhm 17156   GrpHom cghm 17480  mulGrpcmgp 18312  Ringcrg 18370  CRingccrg 18371   RingHom crh 18535  SubRingcsubrg 18599  AssAlgcasa 19130  algSccascl 19132   mVar cmvr 19173   mPoly cmpl 19174   evalSub ces 19325
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892
This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-ofr 6796  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-sup 8231  df-oi 8298  df-card 8648  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-fz 12198  df-fzo 12335  df-seq 12664  df-hash 12980  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-hom 15793  df-cco 15794  df-0g 15925  df-gsum 15926  df-prds 15931  df-pws 15933  df-mre 16069  df-mrc 16070  df-acs 16072  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-mhm 17158  df-submnd 17159  df-grp 17248  df-minusg 17249  df-sbg 17250  df-mulg 17364  df-subg 17414  df-ghm 17481  df-cntz 17573  df-cmn 18018  df-abl 18019  df-mgp 18313  df-ur 18325  df-srg 18329  df-ring 18372  df-cring 18373  df-rnghom 18538  df-subrg 18601  df-lmod 18688  df-lss 18754  df-lsp 18793  df-assa 19133  df-asp 19134  df-ascl 19135  df-psr 19177  df-mvr 19178  df-mpl 19179  df-evls 19327
This theorem is referenced by:  pf1ind  19540  mzpmfp  36328
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