Theorem esplyfval3 34274

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 2763	. . . . . . . . 9 ⊢ (ℤRHom‘𝑅) = (ℤRHom‘𝑅)
3	2	zrhrhm 21847	. . . . . . . 8 ⊢ (𝑅 ∈ Ring → (ℤRHom‘𝑅) ∈ (ℤring RingHom 𝑅))
4		zringbas 21789	. . . . . . . . 9 ⊢ ℤ = (Base‘ℤring)
5		eqid 2763	. . . . . . . . 9 ⊢ (Base‘𝑅) = (Base‘𝑅)
6	4, 5	rhmf 20745	. . . . . . . 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 6732	. . . . . 6 ⊢ (𝜑 → (ℤRHom‘𝑅) Fn ℤ)
9		esplyfval3.d	. . . . . . . . . 10 ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ ℎ finSupp 0}
10		ovex 7476	. . . . . . . . . 10 ⊢ (ℕ0 ↑m 𝐼) ∈ V
11	9, 10	rabex2 5306	. . . . . . . . 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 34268	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}) ⊆ 𝐷)
19		indf 12353	. . . . . . . 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 12732	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 0 ∈ ℤ)
22		1zzd 12754	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → 1 ∈ ℤ)
23	21, 22	prssd 4781	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → {0, 1} ⊆ ℤ)
24	20, 23	fssd 6749	. . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})):𝐷⟶ℤ)
25		fnfco 6769	. . . . . 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 34265	. . . . . 6 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = ((ℤRHom‘𝑅) ∘ ((𝟭‘𝐷)‘((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾}))))
28	27	fneq1d 6654	. . . . 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 6966	. . . 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 2775	. . . . . 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 2775	. . . . . 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 34271	. . . . . 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 6910	. . . . . . 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 7009	. . . . . . 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 4008	. . . . . . . . . . . . . . . . . . . 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 3913	. . . . . . . . . . . . . . . . . 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 4569	. . . . . . . . . . . . . . . 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 12353	. . . . . . . . . . . . . . . 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 6714	. . . . . . . . . . . . . 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 33501	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐼 ∈ Fin → (𝟭‘𝐼):𝒫 𝐼⟶1-1onto({0, 1} ↑m 𝐼))
60		f1of 6846	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝟭‘𝐼):𝒫 𝐼⟶1-1onto({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 6732	. . . . . . . . . . . . . . . 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 6981	. . . . . . . . . . . . . . 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 3174	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ 𝑓 ∈ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})) → 𝑓:𝐼⟶{0, 1})
67	66	frnd 6740	. . . . . . . . . . . 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 4053	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → 𝑓 ∈ (𝐷 ∖ ((𝟭‘𝐼) “ {𝑐 ∈ 𝒫 𝐼 ∣ (♯‘𝑐) = 𝐾})))
70		ind0 12357	. . . . . . . . . 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 1496	. . . . . . . . 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 6912	. . . . . . . 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 21849	. . . . . . . . . 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 2798	. . . . . . 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 2802	. . . . . 6 ⊢ ((((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) ∧ ¬ ran 𝑓 ⊆ {0, 1}) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = 0 )
78	32, 33, 42, 77	ifbothda 4524	. . . . 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 4539	. . . . 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 2816	. . . 4 ⊢ (((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (((𝐼eSymPoly𝑅)‘𝐾)‘𝑓) = if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 ))
81	80	mpteq2dva 5201	. . 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 2798	. 2 ⊢ ((𝜑 ∧ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )))
83		eqid 2763	. . . . 5 ⊢ (𝐼 mPoly 𝑅) = (𝐼 mPoly 𝑅)
84	9	psrbasfsupp 34213	. . . . 5 ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin}
85		eqid 2763	. . . . 5 ⊢ (0g‘(𝐼 mPoly 𝑅)) = (0g‘(𝐼 mPoly 𝑅))
86	1	ringgrpd 20499	. . . . 5 ⊢ (𝜑 → 𝑅 ∈ Grp)
87	83, 84, 39, 85, 13, 86	mpl0 22343	. . . 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 4053	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → 𝐾 ∈ (ℕ0 ∖ (0...(♯‘𝐼))))
94	9, 89, 90, 93, 85	esplyfval2 34267	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → ((𝐼eSymPoly𝑅)‘𝐾) = (0g‘(𝐼 mPoly 𝑅)))
95		breq1 5109	. . . . . . . . . . . . . 14 ⊢ (ℎ = 𝑓 → (ℎ finSupp 0 ↔ 𝑓 finSupp 0))
96	9	eleq2i 2856	. . . . . . . . . . . . . . 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 3651	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓 finSupp 0)
99	98	fsuppimpd 9389	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (𝑓 supp 0) ∈ Fin)
100		hashcl 14527	. . . . . . . . . . . 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 12695	. . . . . . . . . 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 14527	. . . . . . . . . . . . 13 ⊢ (𝐼 ∈ Fin → (♯‘𝐼) ∈ ℕ0)
105	13, 104	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → (♯‘𝐼) ∈ ℕ0)
106	105	nn0red 12695	. . . . . . . . . . 11 ⊢ (𝜑 → (♯‘𝐼) ∈ ℝ)
107	106	ad2antrr 739	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘𝐼) ∈ ℝ)
108	16	nn0red 12695	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐾 ∈ ℝ)
109	108	ad2antrr 739	. . . . . . . . . 10 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → 𝐾 ∈ ℝ)
110		suppssdm 8222	. . . . . . . . . . . . 13 ⊢ (𝑓 supp 0) ⊆ dom 𝑓
111	9	ssrab3 4010	. . . . . . . . . . . . . . . 16 ⊢ 𝐷 ⊆ (ℕ0 ↑m 𝐼)
112	111	a1i 11	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐷 ⊆ (ℕ0 ↑m 𝐼))
113	112	sselda 3913	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓 ∈ (ℕ0 ↑m 𝐼))
114	113	elmaprd 8898	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → 𝑓:𝐼⟶ℕ0)
115	110, 114	fssdm 6751	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ 𝐷) → (𝑓 supp 0) ⊆ 𝐼)
116		hashss 14580	. . . . . . . . . . . 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 12745	. . . . . . . . . . . 12 ⊢ (𝜑 → (♯‘𝐼) ∈ ℤ)
120	119	ad2antrr 739	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘𝐼) ∈ ℤ)
121		nn0diffz0 33456	. . . . . . . . . . . . . 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 2866	. . . . . . . . . . . 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 13019	. . . . . . . . . . 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 11495	. . . . . . . . 9 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) < 𝐾)
128	103, 127	ltned 11473	. . . . . . . 8 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → (♯‘(𝑓 supp 0)) ≠ 𝐾)
129	128	neneqd 2964	. . . . . . 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 4496	. . . . 5 ⊢ (((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) ∧ 𝑓 ∈ 𝐷) → if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 ) = 0 )
132	131	mpteq2dva 5201	. . . 4 ⊢ ((𝜑 ∧ ¬ 𝐾 ∈ (0...(♯‘𝐼))) → (𝑓 ∈ 𝐷 ↦ if((ran 𝑓 ⊆ {0, 1} ∧ (♯‘(𝑓 supp 0)) = 𝐾), 1 , 0 )) = (𝑓 ∈ 𝐷 ↦ 0 ))
133		fconstmpt 5717	. . . 4 ⊢ (𝐷 × { 0 }) = (𝑓 ∈ 𝐷 ↦ 0 )
134	132, 133	eqtr4di 2816	. . 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 2808	. 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 2147  ∃wrex 3090  {crab 3416  Vcvv 3454   ⊆ wss 3900   ∖ cdif 4048  ifcif 4485  𝒫 cpw 4560  {csn 4588  {cpr 4590   class class class wbr 5106   ↦ cmpt 5189   × cxp 5653  ran crn 5656   “ cima 5658   ∘ ccom 5659   Fn wfn 6553  ⟶wf 6554  ⟶1-1ontowf1o 6557  ‘cfv 6558  (class class class)co 7443   supp csupp 8204   ↑_m cmap 8875  Fincfn 9001   finSupp cfsupp 9381  ℝcr 11226  0cc0 11227  1c1 11228   + caddc 11230   < clt 11370   ≤ cle 11371  𝟭cind 12347  ℕ₀cn0 12633  ℤcz 12720  ℤ_≥cuz 12992  ...cfz 13666  ♯chash 14501  Basecbs 17416  0_gc0g 17639  1_rcur 20437  Ringcrg 20489   RingHom crh 20729  ℤ_ringczring 21782  ℤRHomczrh 21835   mPoly cmpl 22244  eSymPolycesply 34258

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 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7775  ax-cnex 11283  ax-resscn 11284  ax-1cn 11285  ax-icn 11286  ax-addcl 11287  ax-addrcl 11288  ax-mulcl 11289  ax-mulrcl 11290  ax-mulcom 11291  ax-addass 11292  ax-mulass 11293  ax-distr 11294  ax-i2m1 11295  ax-1ne0 11296  ax-1rid 11297  ax-rnegex 11298  ax-rrecex 11299  ax-cnre 11300  ax-pre-lttri 11301  ax-pre-lttrn 11302  ax-pre-ltadd 11303  ax-pre-mulgt0 11304  ax-addf 11306  ax-mulf 11307

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-br 5107  df-opab 5171  df-mpt 5190  df-tr 5216  df-id 5550  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-we 5610  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-pred 6322  df-ord 6383  df-on 6384  df-lim 6385  df-suc 6386  df-iota 6512  df-fun 6560  df-fn 6561  df-f 6562  df-f1 6563  df-fo 6564  df-f1o 6565  df-fv 6566  df-riota 7400  df-ov 7446  df-oprab 7447  df-mpo 7448  df-of 7717  df-om 7902  df-1st 8025  df-2nd 8026  df-supp 8205  df-frecs 8327  df-wrecs 8358  df-recs 8407  df-rdg 8446  df-1o 8504  df-oadd 8508  df-er 8745  df-map 8877  df-ixp 8954  df-en 9002  df-dom 9003  df-sdom 9004  df-fin 9005  df-fsupp 9382  df-sup 9461  df-card 10047  df-pnf 11372  df-mnf 11373  df-xr 11374  df-ltxr 11375  df-le 11376  df-sub 11570  df-neg 11571  df-ind 12348  df-nn 12363  df-2 12432  df-3 12433  df-4 12434  df-5 12435  df-6 12436  df-7 12437  df-8 12438  df-9 12439  df-n0 12634  df-xnn0 12707  df-z 12721  df-dec 12842  df-uz 12993  df-fz 13667  df-fzo 13816  df-seq 14172  df-hash 14502  df-struct 17354  df-sets 17371  df-slot 17389  df-ndx 17401  df-base 17417  df-ress 17438  df-plusg 17470  df-mulr 17471  df-starv 17472  df-sca 17473  df-vsca 17474  df-ip 17475  df-tset 17476  df-ple 17477  df-ds 17479  df-unif 17480  df-hom 17481  df-cco 17482  df-0g 17641  df-prds 17647  df-pws 17649  df-mgm 18845  df-sgrp 18937  df-mnd 18953  df-mhm 19007  df-grp 19176  df-minusg 19177  df-mulg 19307  df-subg 19362  df-ghm 19457  df-cmn 20026  df-abl 20027  df-mgp 20391  df-rng 20405  df-ur 20438  df-ring 20491  df-cring 20492  df-rhm 20732  df-subrng 20828  df-subrg 20852  df-cnfld 21709  df-zring 21783  df-zrh 21839  df-psr 22247  df-mpl 22249  df-esply 34260

This theorem is used by:  esplyfval1  34275  esplyfvaln  34276  esplyind  34277