evlsmhpvvval - Mathbox for Steven Nguyen

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Theorem evlsmhpvvval 43045

Description: Give a formula for the evaluation of a homogeneous polynomial given assignments from variables to values. The difference between this and evlsvvval 22069 is that 𝑏 ∈ 𝐷 is restricted to 𝑏 ∈ 𝐺, that is, we can evaluate an 𝑁-th degree homogeneous polynomial over just the terms where the sum of all variable degrees is 𝑁. (Contributed by SN, 5-Mar-2025.)

**Hypotheses**
Ref	Expression
evlsmhpvvval.q	⊢ 𝑄 = ((𝐼 evalSub 𝑆)‘𝑅)
evlsmhpvvval.p	⊢ 𝐻 = (𝐼 mHomP 𝑈)
evlsmhpvvval.u	⊢ 𝑈 = (𝑆 ↾_s 𝑅)
evlsmhpvvval.d	⊢ 𝐷 = {ℎ ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡ℎ “ ℕ) ∈ Fin}
evlsmhpvvval.g	⊢ 𝐺 = {𝑔 ∈ 𝐷 ∣ ((ℂ_fld ↾_s ℕ₀) Σ_g 𝑔) = 𝑁}
evlsmhpvvval.k	⊢ 𝐾 = (Base‘𝑆)
evlsmhpvvval.m	⊢ 𝑀 = (mulGrp‘𝑆)
evlsmhpvvval.w	⊢ ↑ = (._g‘𝑀)
evlsmhpvvval.x	⊢ · = (._r‘𝑆)
evlsmhpvvval.s	⊢ (𝜑 → 𝑆 ∈ CRing)
evlsmhpvvval.r	⊢ (𝜑 → 𝑅 ∈ (SubRing‘𝑆))
evlsmhpvvval.f	⊢ (𝜑 → 𝐹 ∈ (𝐻‘𝑁))
evlsmhpvvval.a	⊢ (𝜑 → 𝐴 ∈ (𝐾 ↑_m 𝐼))

**Assertion**
Ref	Expression
evlsmhpvvval	⊢ (𝜑 → ((𝑄‘𝐹)‘𝐴) = (𝑆 Σ_g (𝑏 ∈ 𝐺 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))))

Distinct variable groups: 𝐴,𝑏,𝑖 𝐷,𝑏,𝑖 𝐷,𝑔 𝐹,𝑏 𝐺,𝑏 𝐼,𝑏,ℎ 𝑖,𝐼 𝐾,𝑏,𝑖 𝑔,𝑁 𝑅,𝑏 𝑆,𝑏,𝑖 𝑈,𝑏,ℎ 𝑈,𝑖 𝜑,𝑏,𝑖 𝑔,ℎ Allowed substitution hints: 𝜑(𝑔,ℎ) 𝐴(𝑔,ℎ) 𝐷(ℎ) 𝑄(𝑔,ℎ,𝑖,𝑏) 𝑅(𝑔,ℎ,𝑖) 𝑆(𝑔,ℎ) · (𝑔,ℎ,𝑖,𝑏) 𝑈(𝑔) ↑ (𝑔,ℎ,𝑖,𝑏) 𝐹(𝑔,ℎ,𝑖) 𝐺(𝑔,ℎ,𝑖) 𝐻(𝑔,ℎ,𝑖,𝑏) 𝐼(𝑔) 𝐾(𝑔,ℎ) 𝑀(𝑔,ℎ,𝑖,𝑏) 𝑁(ℎ,𝑖,𝑏)

**Proof of Theorem evlsmhpvvval**
Step	Hyp	Ref	Expression
1		evlsmhpvvval.q	. . 3 ⊢ 𝑄 = ((𝐼 evalSub 𝑆)‘𝑅)
2		eqid 2739	. . 3 ⊢ (𝐼 mPoly 𝑈) = (𝐼 mPoly 𝑈)
3		eqid 2739	. . 3 ⊢ (Base‘(𝐼 mPoly 𝑈)) = (Base‘(𝐼 mPoly 𝑈))
4		evlsmhpvvval.u	. . 3 ⊢ 𝑈 = (𝑆 ↾_s 𝑅)
5		evlsmhpvvval.d	. . 3 ⊢ 𝐷 = {ℎ ∈ (ℕ₀ ↑_m 𝐼) ∣ (^◡ℎ “ ℕ) ∈ Fin}
6		evlsmhpvvval.k	. . 3 ⊢ 𝐾 = (Base‘𝑆)
7		evlsmhpvvval.m	. . 3 ⊢ 𝑀 = (mulGrp‘𝑆)
8		evlsmhpvvval.w	. . 3 ⊢ ↑ = (._g‘𝑀)
9		evlsmhpvvval.x	. . 3 ⊢ · = (._r‘𝑆)
10		reldmmhp 22125	. . . 4 ⊢ Rel dom mHomP
11		evlsmhpvvval.p	. . . 4 ⊢ 𝐻 = (𝐼 mHomP 𝑈)
12		evlsmhpvvval.f	. . . 4 ⊢ (𝜑 → 𝐹 ∈ (𝐻‘𝑁))
13	10, 11, 12	elfvov1 7398	. . 3 ⊢ (𝜑 → 𝐼 ∈ V)
14		evlsmhpvvval.s	. . 3 ⊢ (𝜑 → 𝑆 ∈ CRing)
15		evlsmhpvvval.r	. . 3 ⊢ (𝜑 → 𝑅 ∈ (SubRing‘𝑆))
16	11, 2, 3, 12	mhpmpl 22132	. . 3 ⊢ (𝜑 → 𝐹 ∈ (Base‘(𝐼 mPoly 𝑈)))
17		evlsmhpvvval.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ (𝐾 ↑_m 𝐼))
18	1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 17	evlsvvval 22069	. 2 ⊢ (𝜑 → ((𝑄‘𝐹)‘𝐴) = (𝑆 Σ_g (𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))))
19		eqid 2739	. . 3 ⊢ (0_g‘𝑆) = (0_g‘𝑆)
20	14	crngringd 20218	. . . 4 ⊢ (𝜑 → 𝑆 ∈ Ring)
21	20	ringcmnd 20256	. . 3 ⊢ (𝜑 → 𝑆 ∈ CMnd)
22		ovex 7389	. . . . 5 ⊢ (ℕ₀ ↑_m 𝐼) ∈ V
23	5, 22	rabex2 5269	. . . 4 ⊢ 𝐷 ∈ V
24	23	a1i 11	. . 3 ⊢ (𝜑 → 𝐷 ∈ V)
25	20	adantr 481	. . . . 5 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → 𝑆 ∈ Ring)
26		eqid 2739	. . . . . . . 8 ⊢ (Base‘𝑈) = (Base‘𝑈)
27	2, 26, 3, 5, 16	mplelf 21972	. . . . . . 7 ⊢ (𝜑 → 𝐹:𝐷⟶(Base‘𝑈))
28	4	subrgbas 20553	. . . . . . . . 9 ⊢ (𝑅 ∈ (SubRing‘𝑆) → 𝑅 = (Base‘𝑈))
29	6	subrgss 20544	. . . . . . . . 9 ⊢ (𝑅 ∈ (SubRing‘𝑆) → 𝑅 ⊆ 𝐾)
30	28, 29	eqsstrrd 3950	. . . . . . . 8 ⊢ (𝑅 ∈ (SubRing‘𝑆) → (Base‘𝑈) ⊆ 𝐾)
31	15, 30	syl 17	. . . . . . 7 ⊢ (𝜑 → (Base‘𝑈) ⊆ 𝐾)
32	27, 31	fssd 6672	. . . . . 6 ⊢ (𝜑 → 𝐹:𝐷⟶𝐾)
33	32	ffvelcdmda 7025	. . . . 5 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → (𝐹‘𝑏) ∈ 𝐾)
34	13	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → 𝐼 ∈ V)
35	14	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → 𝑆 ∈ CRing)
36	17	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → 𝐴 ∈ (𝐾 ↑_m 𝐼))
37		simpr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → 𝑏 ∈ 𝐷)
38	5, 6, 7, 8, 34, 35, 36, 37	evlsvvvallem 22067	. . . . 5 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))) ∈ 𝐾)
39	6, 9, 25, 33, 38	ringcld 20232	. . . 4 ⊢ ((𝜑 ∧ 𝑏 ∈ 𝐷) → ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))) ∈ 𝐾)
40	39	fmpttd 7056	. . 3 ⊢ (𝜑 → (𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))):𝐷⟶𝐾)
41	4, 19	subrg0 20551	. . . . . . . . . 10 ⊢ (𝑅 ∈ (SubRing‘𝑆) → (0_g‘𝑆) = (0_g‘𝑈))
42	15, 41	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (0_g‘𝑆) = (0_g‘𝑈))
43	42	oveq2d 7372	. . . . . . . 8 ⊢ (𝜑 → (𝐹 supp (0_g‘𝑆)) = (𝐹 supp (0_g‘𝑈)))
44		eqid 2739	. . . . . . . . . 10 ⊢ (0_g‘𝑈) = (0_g‘𝑈)
45	11, 44, 5, 12	mhpdeg 22133	. . . . . . . . 9 ⊢ (𝜑 → (𝐹 supp (0_g‘𝑈)) ⊆ {𝑔 ∈ 𝐷 ∣ ((ℂ_fld ↾_s ℕ₀) Σ_g 𝑔) = 𝑁})
46		evlsmhpvvval.g	. . . . . . . . 9 ⊢ 𝐺 = {𝑔 ∈ 𝐷 ∣ ((ℂ_fld ↾_s ℕ₀) Σ_g 𝑔) = 𝑁}
47	45, 46	sseqtrrdi 3956	. . . . . . . 8 ⊢ (𝜑 → (𝐹 supp (0_g‘𝑈)) ⊆ 𝐺)
48	43, 47	eqsstrd 3949	. . . . . . 7 ⊢ (𝜑 → (𝐹 supp (0_g‘𝑆)) ⊆ 𝐺)
49		fvexd 6842	. . . . . . 7 ⊢ (𝜑 → (0_g‘𝑆) ∈ V)
50	32, 48, 24, 49	suppssr 8135	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → (𝐹‘𝑏) = (0_g‘𝑆))
51	50	oveq1d 7371	. . . . 5 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))) = ((0_g‘𝑆) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))
52	20	adantr 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → 𝑆 ∈ Ring)
53		eldifi 4061	. . . . . . 7 ⊢ (𝑏 ∈ (𝐷 ∖ 𝐺) → 𝑏 ∈ 𝐷)
54	53, 38	sylan2 599	. . . . . 6 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))) ∈ 𝐾)
55	6, 9, 19, 52, 54	ringlzd 20267	. . . . 5 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → ((0_g‘𝑆) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))) = (0_g‘𝑆))
56	51, 55	eqtrd 2774	. . . 4 ⊢ ((𝜑 ∧ 𝑏 ∈ (𝐷 ∖ 𝐺)) → ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))) = (0_g‘𝑆))
57	56, 24	suppss2 8140	. . 3 ⊢ (𝜑 → ((𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))) supp (0_g‘𝑆)) ⊆ 𝐺)
58	5, 2, 4, 3, 6, 7, 8, 9, 13, 14, 15, 16, 17	evlsvvvallem2 22068	. . 3 ⊢ (𝜑 → (𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))) finSupp (0_g‘𝑆))
59	6, 19, 21, 24, 40, 57, 58	gsumres 19879	. 2 ⊢ (𝜑 → (𝑆 Σ_g ((𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))) ↾ 𝐺)) = (𝑆 Σ_g (𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))))
60	46	ssrab3 4013	. . . . 5 ⊢ 𝐺 ⊆ 𝐷
61	60	a1i 11	. . . 4 ⊢ (𝜑 → 𝐺 ⊆ 𝐷)
62	61	resmptd 5992	. . 3 ⊢ (𝜑 → ((𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))) ↾ 𝐺) = (𝑏 ∈ 𝐺 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))))
63	62	oveq2d 7372	. 2 ⊢ (𝜑 → (𝑆 Σ_g ((𝑏 ∈ 𝐷 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖)))))) ↾ 𝐺)) = (𝑆 Σ_g (𝑏 ∈ 𝐺 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))))
64	18, 59, 63	3eqtr2d 2780	1 ⊢ (𝜑 → ((𝑄‘𝐹)‘𝐴) = (𝑆 Σ_g (𝑏 ∈ 𝐺 ↦ ((𝐹‘𝑏) · (𝑀 Σ_g (𝑖 ∈ 𝐼 ↦ ((𝑏‘𝑖) ↑ (𝐴‘𝑖))))))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 {crab 3391 Vcvv 3431 ∖ cdif 3880 ⊆ wss 3883 ↦ cmpt 5153 ^◡ccnv 5617 ↾ cres 5620 “ cima 5621 ‘cfv 6485 (class class class)co 7356 supp csupp 8100 ↑_m cmap 8763 Fincfn 8883 ℕcn 12165 ℕ₀cn0 12428 Basecbs 17170 ↾_s cress 17191 ._rcmulr 17212 0_gc0g 17393 Σ_g cgsu 17394 ._gcmg 19034 mulGrpcmgp 20112 Ringcrg 20205 CRingccrg 20206 SubRingcsubrg 20541 ℂ_fldccnfld 21347 mPoly cmpl 21881 evalSub ces 22048 mHomP cmhp 22121

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106

This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-iin 4924 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-se 5572 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-isom 6494 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-of 7620 df-ofr 7621 df-om 7807 df-1st 7931 df-2nd 7932 df-supp 8101 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-map 8765 df-pm 8766 df-ixp 8836 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fsupp 9265 df-sup 9345 df-oi 9415 df-card 9854 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-fz 13453 df-fzo 13600 df-seq 13955 df-hash 14284 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-sca 17227 df-vsca 17228 df-ip 17229 df-tset 17230 df-ple 17231 df-ds 17233 df-hom 17235 df-cco 17236 df-0g 17395 df-gsum 17396 df-prds 17401 df-pws 17403 df-mre 17539 df-mrc 17540 df-acs 17542 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-mhm 18742 df-submnd 18743 df-grp 18903 df-minusg 18904 df-sbg 18905 df-mulg 19035 df-subg 19090 df-ghm 19179 df-cntz 19283 df-cmn 19748 df-abl 19749 df-mgp 20113 df-rng 20125 df-ur 20154 df-srg 20159 df-ring 20207 df-cring 20208 df-rhm 20443 df-subrng 20518 df-subrg 20542 df-lmod 20852 df-lss 20922 df-lsp 20962 df-assa 21828 df-asp 21829 df-ascl 21830 df-psr 21884 df-mvr 21885 df-mpl 21886 df-evls 22050 df-mhp 22124

This theorem is referenced by: mhphf 43047

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