Theorem esplyfval3 34186

Description: Alternate expression for the value of the 𝐾-th elementary symmetric polynomial. (Contributed by Thierry Arnoux, 25-Jan-2026.)

Hypotheses

Ref	Expression
esplyfval3.d	⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ ℎ finSupp 0}
esplyfval3.i	⊢ (𝜑 → 𝐼 ∈ Fin)
esplyfval3.r	⊢ (𝜑 → 𝑅 ∈ Ring)
esplyfval3.k	⊢ (𝜑 → 𝐾 ∈ ℕ0)
esplyfval3.1	⊢ 0 = (0g‘𝑅)
esplyfval3.2	⊢ 1 = (1r‘𝑅)

Assertion

Ref	Expression
esplyfval3	⊢ (𝜑 → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))

Distinct variable groups:   0 ,𝑓   𝐷,𝑓   ℎ,𝐼,𝑓   𝑓,𝐾   𝑅,𝑓   𝜑,𝑓

Allowed substitution hints:   𝜑(ℎ)   𝐷(ℎ)   𝑅(ℎ)   1 (𝑓, ℎ)   𝐾(ℎ)   0 (ℎ)

Proof of Theorem esplyfval3

Dummy variables 𝑑 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		esplyfval3.r	. . . . . . . 8 ⊢ (𝜑 → 𝑅 ∈ Ring)
2		eqid 2761	. . . . . . . . 9 ⊢ (ℤRHom‘𝑅) = (ℤRHom‘𝑅)
3	2	zrhrhm 21797	. . . . . . . 8 ⊢ (𝑅 ∈ Ring → (ℤRHom‘𝑅) ∈ (ℤring RingHom 𝑅))
4		zringbas 21739	. . . . . . . . 9 ⊢ ℤ = (Base‘ℤring)
5		eqid 2761	. . . . . . . . 9 ⊢ (Base‘𝑅) = (Base‘𝑅)
6	4, 5	rhmf 20695	. . . . . . . 8 ⊢ ((ℤRHom‘𝑅) ∈ (ℤring RingHom 𝑅) → (ℤRHom‘𝑅):ℤ⟶(Base‘𝑅))
7	1, 3, 6	3syl 19	. . . . . . 7 ⊢ (𝜑 → (ℤRHom‘𝑅):ℤ⟶(Base‘𝑅))
8	7	ffnd 6702	. . . . . 6 ⊢ (𝜑 → (ℤRHom‘𝑅) Fn ℤ)
9		esplyfval3.d	. . . . . . . . . 10 ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ ℎ finSupp 0}
10		ovex 7445	. . . . . . . . . 10 ⊢ (ℕ0 ↑m 𝐼) ∈ V
11	9, 10	rabex2 5302	. . . . . . . . 9 ⊢ 𝐷 ∈ V
12	11	a1i 11	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐷 ∈ V)
13		esplyfval3.i	. . . . . . . . . 10 ⊢ (𝜑 → 𝐼 ∈ Fin)
14	13	adantr 486	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐼 ∈ Fin)
15	1	adantr 486	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 𝑅 ∈ Ring)
16		esplyfval3.k	. . . . . . . . . 10 ⊢ (𝜑 → 𝐾 ∈ ℕ0)
17	16	adantr 486	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐾 ∈ ℕ0)
18	9, 14, 15, 17	esplylem 34180	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ⊆ 𝐷)
19		indf 12307	. . . . . . . 8 ⊢ ((𝐷 ∈ V ∧ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ⊆ 𝐷) → ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶{0, 1})
20	12, 18, 19	syl2anc 596	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶{0, 1})
21		0zd 12686	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 0 ∈ ℤ)
22		1zzd 12708	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 1 ∈ ℤ)
23	21, 22	prssd 4783	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → {0, 1} ⊆ ℤ)
24	20, 23	fssd 6719	. . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶ℤ)
25		fnfco 6739	. . . . . 6 ⊢ (((ℤRHom‘𝑅) Fn ℤ ∧ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶ℤ) → ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))) Fn 𝐷)
26	8, 24, 25	syl2an2r 698	. . . . 5 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))) Fn 𝐷)
27	9, 14, 15, 17	esplyfval 34177	. . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))))
28	27	fneq1d 6624	. . . . 5 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → (((𝐼eSymPoly𝑅)‘𝐾) Fn 𝐷 ↔ ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))) Fn 𝐷))
29	26, 28	mpbird 260	. . . 4 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) Fn 𝐷)
30		dffn5 6935	. . . 4 ⊢ (((𝐼eSymPoly𝑅)‘𝐾) Fn 𝐷 ↔ ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓)))
31	29, 30	sylib 221	. . 3 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓)))
32		eqeq2 2773	. . . . . 6 ⊢ (if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ) = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 ) → ((((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ) ↔ (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 )))
33		eqeq2 2773	. . . . . 6 ⊢ ( 0 = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 ) → ((((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = 0 ↔ (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 )))
34	14	adantr 486	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → 𝐼 ∈ Fin)
35	34	adantr 486	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → 𝐼 ∈ Fin)
36	15	ad2antrr 739	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → 𝑅 ∈ Ring)
37		simpllr 788	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → 𝐾 ∈ (0...(♯‘𝐼)))
38		simplr 781	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → 𝑓 ∈ 𝐷)
39		esplyfval3.1	. . . . . . 7 ⊢ 0 = (0g‘𝑅)
40		esplyfval3.2	. . . . . . 7 ⊢ 1 = (1r‘𝑅)
41		simpr 490	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → ran 𝑓 ⊆ {0, 1})
42	9, 35, 36, 37, 38, 39, 40, 41	esplyfv1 34183	. . . . . 6 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ran 𝑓 ⊆ {0, 1}) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ))
43	27	ad2antrr 739	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((𝐼eSymPoly𝑅)‘𝐾) = ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))))
44	43	fveq1d 6879	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = (((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})))‘𝑓))
45	24	ad2antrr 739	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶ℤ)
46		simplr 781	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → 𝑓 ∈ 𝐷)
47	45, 46	fvco3d 6978	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → (((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})))‘𝑓) = ((ℤRHom‘𝑅)‘(((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))‘𝑓)))
48	18	ad2antrr 739	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ⊆ 𝐷)
49		simpr 490	. . . . . . . . . . . . . . 15 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → ((𝟭‘𝐼)‘𝑑) = 𝑓)
50	34	ad3antrrr 743	. . . . . . . . . . . . . . . 16 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → 𝐼 ∈ Fin)
51		ssrab2 4028	. . . . . . . . . . . . . . . . . . . 20 ⊢ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾} ⊆ 𝒫 𝐼
52	51	a1i 11	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) → {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾} ⊆ 𝒫 𝐼)
53	52	sselda 3931	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) → 𝑑 ∈ 𝒫 𝐼)
54	53	adantr 486	. . . . . . . . . . . . . . . . 17 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → 𝑑 ∈ 𝒫 𝐼)
55	54	elpwid 4566	. . . . . . . . . . . . . . . 16 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → 𝑑 ⊆ 𝐼)
56		indf 12307	. . . . . . . . . . . . . . . 16 ⊢ ((𝐼 ∈ Fin ∧ 𝑑 ⊆ 𝐼) → ((𝟭‘𝐼)‘𝑑):𝐼⟶{0, 1})
57	50, 55, 56	syl2anc 596	. . . . . . . . . . . . . . 15 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → ((𝟭‘𝐼)‘𝑑):𝐼⟶{0, 1})
58	49, 57	feq1dd 6684	. . . . . . . . . . . . . 14 ⊢ ((((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) ∧ 𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ∧ ((𝟭‘𝐼)‘𝑑) = 𝑓) → 𝑓:𝐼⟶{0, 1})
59		indf1o 33413	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐼 ∈ Fin → (𝟭‘𝐼):𝒫 𝐼–1-1-onto→({0, 1} ↑m 𝐼))
60		f1of 6816	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝟭‘𝐼):𝒫 𝐼–1-1-onto→({0, 1} ↑m 𝐼) → (𝟭‘𝐼):𝒫 𝐼⟶({0, 1} ↑m 𝐼))
61	34, 59, 60	3syl 19	. . . . . . . . . . . . . . . . 17 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (𝟭‘𝐼):𝒫 𝐼⟶({0, 1} ↑m 𝐼))
62	61	ffnd 6702	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (𝟭‘𝐼) Fn 𝒫 𝐼)
63	51	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾} ⊆ 𝒫 𝐼)
64	62, 63	fvelimabd 6950	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ↔ ∃𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾} ((𝟭‘𝐼)‘𝑑) = 𝑓))
65	64	biimpa 482	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) → ∃𝑑 ∈ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾} ((𝟭‘𝐼)‘𝑑) = 𝑓)
66	58, 65	r19.29a 3171	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) → 𝑓:𝐼⟶{0, 1})
67	66	frnd 6710	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) → ran 𝑓 ⊆ {0, 1})
68	67	stoic1a 1805	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ¬ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))
69	46, 68	eldifd 3910	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → 𝑓 ∈ (𝐷 ∖ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})))
70		ind0 12311	. . . . . . . . . 10 ⊢ ((𝐷 ∈ V ∧ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ⊆ 𝐷 ∧ 𝑓 ∈ (𝐷 ∖ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))) → (((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))‘𝑓) = 0)
71	11, 48, 69, 70	mp3an2i 1495	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → (((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))‘𝑓) = 0)
72	71	fveq2d 6881	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((ℤRHom‘𝑅)‘(((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))‘𝑓)) = ((ℤRHom‘𝑅)‘0))
73	2, 39	zrh0 21799	. . . . . . . . . 10 ⊢ (𝑅 ∈ Ring → ((ℤRHom‘𝑅)‘0) = 0 )
74	1, 73	syl 18	. . . . . . . . 9 ⊢ (𝜑 → ((ℤRHom‘𝑅)‘0) = 0 )
75	74	ad3antrrr 743	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((ℤRHom‘𝑅)‘0) = 0 )
76	72, 75	eqtrd 2796	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → ((ℤRHom‘𝑅)‘(((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))‘𝑓)) = 0 )
77	44, 47, 76	3eqtrd 2800	. . . . . 6 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = 0 )
78	32, 33, 42, 77	ifbothda 4521	. . . . 5 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 ))
79		ifan 4536	. . . . 5 ⊢ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 ) = if(ran 𝑓 ⊆ {0, 1}, if((♯‘(𝑓 supp 0)) = 𝐾, 1 , 0 ), 0 )
80	78, 79	eqtr4di 2814	. . . 4 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 ))
81	80	mpteq2dva 5198	. . 3 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → (𝑓 ∈ 𝐷 ↦ (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓)) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))
82	31, 81	eqtrd 2796	. 2 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))
83		eqid 2761	. . . . 5 ⊢ (𝐼 mPoly 𝑅) = (𝐼 mPoly 𝑅)
84	9	psrbasfsupp 34125	. . . . 5 ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin}
85		eqid 2761	. . . . 5 ⊢ (0g‘(𝐼 mPoly 𝑅)) = (0g‘(𝐼 mPoly 𝑅))
86	1	ringgrpd 20449	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ Grp)
87	83, 84, 39, 85, 13, 86	mpl0 22293	. . . 4 ⊢ (𝜑 → (0g‘(𝐼 mPoly 𝑅)) = (𝐷 × { 0 }))
88	87	adantr 486	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → (0g‘(𝐼 mPoly 𝑅)) = (𝐷 × { 0 }))
89	13	adantr 486	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐼 ∈ Fin)
90	1	adantr 486	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝑅 ∈ Ring)
91	16	adantr 486	. . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐾 ∈ ℕ0)
92		simpr 490	. . . . 5 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → ¬ 𝐾 ∈ (0...(♯‘𝐼)))
93	91, 92	eldifd 3910	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐾 ∈ (ℕ0 ∖ (0...(♯‘𝐼))))
94	9, 89, 90, 93, 85	esplyfval2 34179	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (0g‘(𝐼 mPoly 𝑅)))
95		breq1 5106	. . . . . . . . . . . . . 14 ⊢ (ℎ = 𝑓 → (ℎ finSupp 0 ↔ 𝑓 finSupp 0))
96	9	eleq2i 2853	. . . . . . . . . . . . . . 15 ⊢ (𝑓 ∈ 𝐷 ↔ 𝑓 ∈ {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ ℎ finSupp 0})
97	96	bilani 510	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓 ∈ {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ ℎ finSupp 0})
98	95, 97	elrabrd 3648	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓 finSupp 0)
99	98	fsuppimpd 9345	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (𝑓 supp 0) ∈ Fin)
100		hashcl 14480	. . . . . . . . . . . 12 ⊢ ((𝑓 supp 0) ∈ Fin → (♯‘(𝑓 supp 0)) ∈ ℕ0)
101	99, 100	syl 18	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ∈ ℕ0)
102	101	nn0red 12649	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ∈ ℝ)
103	102	adantlr 728	. . . . . . . . 9 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ∈ ℝ)
104		hashcl 14480	. . . . . . . . . . . . 13 ⊢ (𝐼 ∈ Fin → (♯‘𝐼) ∈ ℕ0)
105	13, 104	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (♯‘𝐼) ∈ ℕ0)
106	105	nn0red 12649	. . . . . . . . . . 11 ⊢ (𝜑 → (♯‘𝐼) ∈ ℝ)
107	106	ad2antrr 739	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘𝐼) ∈ ℝ)
108	16	nn0red 12649	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐾 ∈ ℝ)
109	108	ad2antrr 739	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → 𝐾 ∈ ℝ)
110		suppssdm 8178	. . . . . . . . . . . . 13 ⊢ (𝑓 supp 0) ⊆ dom 𝑓
111	9	ssrab3 4030	. . . . . . . . . . . . . . . 16 ⊢ 𝐷 ⊆ (ℕ0 ↑m 𝐼)
112	111	a1i 11	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐷 ⊆ (ℕ0 ↑m 𝐼))
113	112	sselda 3931	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓 ∈ (ℕ0 ↑m 𝐼))
114	113	elmaprd 8854	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓:𝐼⟶ℕ0)
115	110, 114	fssdm 6721	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (𝑓 supp 0) ⊆ 𝐼)
116		hashss 14533	. . . . . . . . . . . 12 ⊢ ((𝐼 ∈ Fin ∧ (𝑓 supp 0) ⊆ 𝐼) → (♯‘(𝑓 supp 0)) ≤ (♯‘𝐼))
117	13, 115, 116	syl2an2r 698	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ≤ (♯‘𝐼))
118	117	adantlr 728	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ≤ (♯‘𝐼))
119	105	nn0zd 12699	. . . . . . . . . . . 12 ⊢ (𝜑 → (♯‘𝐼) ∈ ℤ)
120	119	ad2antrr 739	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘𝐼) ∈ ℤ)
121		nn0diffz0 33368	. . . . . . . . . . . . . 14 ⊢ ((♯‘𝐼) ∈ ℕ0 → (ℕ0 ∖ (0...(♯‘𝐼))) = (ℤ≥‘((♯‘𝐼) + 1)))
122	89, 104, 121	3syl 19	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → (ℕ0 ∖ (0...(♯‘𝐼))) = (ℤ≥‘((♯‘𝐼) + 1)))
123	93, 122	eleqtrd 2863	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐾 ∈ (ℤ≥‘((♯‘𝐼) + 1)))
124	123	adantr 486	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → 𝐾 ∈ (ℤ≥‘((♯‘𝐼) + 1)))
125		eluzp1l 12973	. . . . . . . . . . 11 ⊢ (((♯‘𝐼) ∈ ℤ ∧ 𝐾 ∈ (ℤ≥‘((♯‘𝐼) + 1))) → (♯‘𝐼) < 𝐾)
126	120, 124, 125	syl2anc 596	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘𝐼) < 𝐾)
127	103, 107, 109, 118, 126	lelttrd 11449	. . . . . . . . 9 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) < 𝐾)
128	103, 127	ltned 11427	. . . . . . . 8 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ≠ 𝐾)
129	128	neneqd 2961	. . . . . . 7 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → ¬ (♯‘(𝑓 supp 0)) = 𝐾)
130	129	intnand 494	. . . . . 6 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → ¬ (ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾))
131	130	iffalsed 4493	. . . . 5 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 ) = 0 )
132	131	mpteq2dva 5198	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )) = (𝑓 ∈ 𝐷 ↦ 0 ))
133		fconstmpt 5713	. . . 4 ⊢ (𝐷 × { 0 }) = (𝑓 ∈ 𝐷 ↦ 0 )
134	132, 133	eqtr4di 2814	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )) = (𝐷 × { 0 }))
135	88, 94, 134	3eqtr4d 2806	. 2 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))
136	82, 135	pm2.61dan 825	1 ⊢ (𝜑 → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))

This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2145  ∃wrex 3087  {crab 3413  Vcvv 3451   ∖ cdif 3896   ⊆ wss 3899  ifcif 4482  𝒫 cpw 4557  {csn 4584  {cpr 4586   class class class wbr 5103   ↦ cmpt 5186   × cxp 5649  ran crn 5652   “ cima 5654   ∘ ccom 5655   Fn wfn 6526  ⟶wf 6527  –1-1-onto→wf1o 6530  ‘cfv 6531  (class class class)co 7412   supp csupp 8161   ↑_m cmap 8831  Fincfn 8957   finSupp cfsupp 9337  ℝcr 11180  0cc0 11181  1c1 11182   + caddc 11184   < clt 11324   ≤ cle 11325  𝟭cind 12301  ℕ₀cn0 12587  ℤcz 12674  ℤ_≥cuz 12946  ...cfz 13620  ♯chash 14454  Basecbs 17367  0_gc0g 17590  1_rcur 20387  Ringcrg 20439   RingHom crh 20679  ℤ_ringczring 21732  ℤRHomczrh 21785   mPoly cmpl 22194  eSymPolycesply 34170

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 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-rep 5232  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7740  ax-cnex 11237  ax-resscn 11238  ax-1cn 11239  ax-icn 11240  ax-addcl 11241  ax-addrcl 11242  ax-mulcl 11243  ax-mulrcl 11244  ax-mulcom 11245  ax-addass 11246  ax-mulass 11247  ax-distr 11248  ax-i2m1 11249  ax-1ne0 11250  ax-1rid 11251  ax-rnegex 11252  ax-rrecex 11253  ax-cnre 11254  ax-pre-lttri 11255  ax-pre-lttrn 11256  ax-pre-ltadd 11257  ax-pre-mulgt0 11258  ax-addf 11260  ax-mulf 11261

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 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-nel 3063  df-ral 3078  df-rex 3088  df-rmo 3366  df-reu 3367  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-tp 4589  df-op 4591  df-uni 4868  df-int 4908  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5546  df-eprel 5551  df-po 5559  df-so 5560  df-fr 5604  df-we 5606  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-pred 6297  df-ord 6358  df-on 6359  df-lim 6360  df-suc 6361  df-iota 6487  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538  df-fv 6539  df-riota 7369  df-ov 7415  df-oprab 7416  df-mpo 7417  df-of 7682  df-om 7867  df-1st 7990  df-2nd 7991  df-supp 8162  df-frecs 8283  df-wrecs 8314  df-recs 8363  df-rdg 8402  df-1o 8460  df-oadd 8464  df-er 8701  df-map 8833  df-ixp 8910  df-en 8958  df-dom 8959  df-sdom 8960  df-fin 8961  df-fsupp 9338  df-sup 9418  df-card 10001  df-pnf 11326  df-mnf 11327  df-xr 11328  df-ltxr 11329  df-le 11330  df-sub 11524  df-neg 11525  df-ind 12302  df-nn 12317  df-2 12386  df-3 12387  df-4 12388  df-5 12389  df-6 12390  df-7 12391  df-8 12392  df-9 12393  df-n0 12588  df-xnn0 12661  df-z 12675  df-dec 12796  df-uz 12947  df-fz 13621  df-fzo 13769  df-seq 14125  df-hash 14455  df-struct 17305  df-sets 17322  df-slot 17340  df-ndx 17352  df-base 17368  df-ress 17389  df-plusg 17421  df-mulr 17422  df-starv 17423  df-sca 17424  df-vsca 17425  df-ip 17426  df-tset 17427  df-ple 17428  df-ds 17430  df-unif 17431  df-hom 17432  df-cco 17433  df-0g 17592  df-prds 17598  df-pws 17600  df-mgm 18796  df-sgrp 18888  df-mnd 18904  df-mhm 18958  df-grp 19127  df-minusg 19128  df-mulg 19258  df-subg 19313  df-ghm 19408  df-cmn 19976  df-abl 19977  df-mgp 20341  df-rng 20355  df-ur 20388  df-ring 20441  df-cring 20442  df-rhm 20682  df-subrng 20778  df-subrg 20802  df-cnfld 21659  df-zring 21733  df-zrh 21789  df-psr 22197  df-mpl 22199  df-esply 34172

This theorem is used by:  esplyfval1  34187  esplyfvaln  34188  esplyind  34189