4sqlem13m - Intuitionistic Logic Explorer

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Theorem 4sqlem13m 13182

Description: Lemma for 4sq 13189. (Contributed by Mario Carneiro, 16-Jul-2014.) (Revised by AV, 14-Sep-2020.)

**Hypotheses**
Ref	Expression
4sqlem11.1	⊢ 𝑆 = {𝑛 ∣ ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ ∃𝑧 ∈ ℤ ∃𝑤 ∈ ℤ 𝑛 = (((𝑥↑2) + (𝑦↑2)) + ((𝑧↑2) + (𝑤↑2)))}
4sq.2	⊢ (𝜑 → 𝑁 ∈ ℕ)
4sq.3	⊢ (𝜑 → 𝑃 = ((2 · 𝑁) + 1))
4sq.4	⊢ (𝜑 → 𝑃 ∈ ℙ)
4sq.5	⊢ (𝜑 → (0...(2 · 𝑁)) ⊆ 𝑆)
4sq.6	⊢ 𝑇 = {𝑖 ∈ ℕ ∣ (𝑖 · 𝑃) ∈ 𝑆}
4sq.7	⊢ 𝑀 = inf(𝑇, ℝ, < )

**Assertion**
Ref	Expression
4sqlem13m	⊢ (𝜑 → (∃𝑗 𝑗 ∈ 𝑇 ∧ 𝑀 < 𝑃))

Distinct variable groups: 𝑛,𝑁 𝑃,𝑖,𝑛,𝑤,𝑥,𝑦,𝑧 𝑆,𝑖,𝑛 𝑇,𝑗 𝜑,𝑖,𝑛 Allowed substitution hints: 𝜑(𝑥, 𝑦, 𝑧, 𝑤, 𝑗) 𝑃(𝑗) 𝑆(𝑥, 𝑦, 𝑧, 𝑤, 𝑗) 𝑇(𝑥, 𝑦, 𝑧, 𝑤, 𝑖, 𝑛) 𝑀(𝑥, 𝑦, 𝑧, 𝑤, 𝑖, 𝑗, 𝑛) 𝑁(𝑥, 𝑦, 𝑧, 𝑤, 𝑖, 𝑗)

Proof of Theorem 4sqlem13m Dummy variables 𝑘 𝑢 𝑚 𝑣 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		4sqlem11.1	. . 3 ⊢ 𝑆 = {𝑛 ∣ ∃𝑥 ∈ ℤ ∃𝑦 ∈ ℤ ∃𝑧 ∈ ℤ ∃𝑤 ∈ ℤ 𝑛 = (((𝑥↑2) + (𝑦↑2)) + ((𝑧↑2) + (𝑤↑2)))}
2		4sq.2	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ)
3		4sq.3	. . 3 ⊢ (𝜑 → 𝑃 = ((2 · 𝑁) + 1))
4		4sq.4	. . 3 ⊢ (𝜑 → 𝑃 ∈ ℙ)
5		eqid 2238	. . 3 ⊢ {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)} = {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)}
6		eqid 2238	. . 3 ⊢ (𝑣 ∈ {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)} ↦ ((𝑃 − 1) − 𝑣)) = (𝑣 ∈ {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)} ↦ ((𝑃 − 1) − 𝑣))
7	1, 2, 3, 4, 5, 6	4sqlem12 13181	. 2 ⊢ (𝜑 → ∃𝑘 ∈ (1...(𝑃 − 1))∃𝑢 ∈ ℤ[i] (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃))
8		simplrl 541	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ (1...(𝑃 − 1)))
9		elfznn 10460	. . . . . . . 8 ⊢ (𝑘 ∈ (1...(𝑃 − 1)) → 𝑘 ∈ ℕ)
10	8, 9	syl 14	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ ℕ)
11		simpr 110	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃))
12		abs1 11838	. . . . . . . . . . . 12 ⊢ (abs‘1) = 1
13	12	oveq1i 6095	. . . . . . . . . . 11 ⊢ ((abs‘1)↑2) = (1↑2)
14		sq1 11070	. . . . . . . . . . 11 ⊢ (1↑2) = 1
15	13, 14	eqtri 2259	. . . . . . . . . 10 ⊢ ((abs‘1)↑2) = 1
16	15	oveq2i 6096	. . . . . . . . 9 ⊢ (((abs‘𝑢)↑2) + ((abs‘1)↑2)) = (((abs‘𝑢)↑2) + 1)
17		simplrr 542	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑢 ∈ ℤ[i])
18		1z 9670	. . . . . . . . . . 11 ⊢ 1 ∈ ℤ
19		zgz 13152	. . . . . . . . . . 11 ⊢ (1 ∈ ℤ → 1 ∈ ℤ[i])
20	18, 19	ax-mp 5	. . . . . . . . . 10 ⊢ 1 ∈ ℤ[i]
21	1	4sqlem4a 13170	. . . . . . . . . 10 ⊢ ((𝑢 ∈ ℤ[i] ∧ 1 ∈ ℤ[i]) → (((abs‘𝑢)↑2) + ((abs‘1)↑2)) ∈ 𝑆)
22	17, 20, 21	sylancl 417	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (((abs‘𝑢)↑2) + ((abs‘1)↑2)) ∈ 𝑆)
23	16, 22	eqeltrrid 2326	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (((abs‘𝑢)↑2) + 1) ∈ 𝑆)
24	11, 23	eqeltrrd 2316	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (𝑘 · 𝑃) ∈ 𝑆)
25		oveq1 6092	. . . . . . . . 9 ⊢ (𝑖 = 𝑘 → (𝑖 · 𝑃) = (𝑘 · 𝑃))
26	25	eleq1d 2307	. . . . . . . 8 ⊢ (𝑖 = 𝑘 → ((𝑖 · 𝑃) ∈ 𝑆 ↔ (𝑘 · 𝑃) ∈ 𝑆))
27		4sq.6	. . . . . . . 8 ⊢ 𝑇 = {𝑖 ∈ ℕ ∣ (𝑖 · 𝑃) ∈ 𝑆}
28	26, 27	elrab2 2985	. . . . . . 7 ⊢ (𝑘 ∈ 𝑇 ↔ (𝑘 ∈ ℕ ∧ (𝑘 · 𝑃) ∈ 𝑆))
29	10, 24, 28	sylanbrc 421	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ 𝑇)
30		elex2 2838	. . . . . 6 ⊢ (𝑘 ∈ 𝑇 → ∃𝑗 𝑗 ∈ 𝑇)
31	29, 30	syl 14	. . . . 5 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → ∃𝑗 𝑗 ∈ 𝑇)
32	27	ssrab3 3334	. . . . . . . 8 ⊢ 𝑇 ⊆ ℕ
33		4sq.7	. . . . . . . . 9 ⊢ 𝑀 = inf(𝑇, ℝ, < )
34		1zzd 9671	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 1 ∈ ℤ)
35		nnuz 9958	. . . . . . . . . . . 12 ⊢ ℕ = (ℤ_≥‘1)
36	35	rabeqi 2814	. . . . . . . . . . 11 ⊢ {𝑖 ∈ ℕ ∣ (𝑖 · 𝑃) ∈ 𝑆} = {𝑖 ∈ (ℤ_≥‘1) ∣ (𝑖 · 𝑃) ∈ 𝑆}
37	27, 36	eqtri 2259	. . . . . . . . . 10 ⊢ 𝑇 = {𝑖 ∈ (ℤ_≥‘1) ∣ (𝑖 · 𝑃) ∈ 𝑆}
38		elfznn 10460	. . . . . . . . . . . . . 14 ⊢ (𝑖 ∈ (1...𝑘) → 𝑖 ∈ ℕ)
39	38	adantl 277	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → 𝑖 ∈ ℕ)
40		prmnn 12888	. . . . . . . . . . . . . . 15 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
41	4, 40	syl 14	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑃 ∈ ℕ)
42	41	ad3antrrr 496	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → 𝑃 ∈ ℕ)
43	39, 42	nnmulcld 9353	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → (𝑖 · 𝑃) ∈ ℕ)
44	43	nnnn0d 9620	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → (𝑖 · 𝑃) ∈ ℕ₀)
45	1	4sqlemsdc 13179	. . . . . . . . . . 11 ⊢ ((𝑖 · 𝑃) ∈ ℕ₀ → DECID (𝑖 · 𝑃) ∈ 𝑆)
46	44, 45	syl 14	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → DECID (𝑖 · 𝑃) ∈ 𝑆)
47	34, 37, 29, 46	infssuzcldc 10668	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → inf(𝑇, ℝ, < ) ∈ 𝑇)
48	33, 47	eqeltrid 2325	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ 𝑇)
49	32, 48	sselid 3246	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ ℕ)
50	49	nnred 9317	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ ℝ)
51	10	nnred 9317	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ ℝ)
52	41	nnred 9317	. . . . . . 7 ⊢ (𝜑 → 𝑃 ∈ ℝ)
53	52	ad2antrr 492	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑃 ∈ ℝ)
54	34, 37, 29, 46	infssuzledc 10667	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → inf(𝑇, ℝ, < ) ≤ 𝑘)
55	33, 54	eqbrtrid 4165	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ≤ 𝑘)
56		prmz 12889	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ)
57	4, 56	syl 14	. . . . . . . . . 10 ⊢ (𝜑 → 𝑃 ∈ ℤ)
58	57	ad2antrr 492	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑃 ∈ ℤ)
59		elfzm11 10498	. . . . . . . . 9 ⊢ ((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝑘 ∈ (1...(𝑃 − 1)) ↔ (𝑘 ∈ ℤ ∧ 1 ≤ 𝑘 ∧ 𝑘 < 𝑃)))
60	18, 58, 59	sylancr 418	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (𝑘 ∈ (1...(𝑃 − 1)) ↔ (𝑘 ∈ ℤ ∧ 1 ≤ 𝑘 ∧ 𝑘 < 𝑃)))
61	8, 60	mpbid 147	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (𝑘 ∈ ℤ ∧ 1 ≤ 𝑘 ∧ 𝑘 < 𝑃))
62	61	simp3d 1042	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 < 𝑃)
63	50, 51, 53, 55, 62	lelttrd 8451	. . . . 5 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 < 𝑃)
64	31, 63	jca 306	. . . 4 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (∃𝑗 𝑗 ∈ 𝑇 ∧ 𝑀 < 𝑃))
65	64	ex 115	. . 3 ⊢ ((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) → ((((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃) → (∃𝑗 𝑗 ∈ 𝑇 ∧ 𝑀 < 𝑃)))
66	65	rexlimdvva 2676	. 2 ⊢ (𝜑 → (∃𝑘 ∈ (1...(𝑃 − 1))∃𝑢 ∈ ℤ[i] (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃) → (∃𝑗 𝑗 ∈ 𝑇 ∧ 𝑀 < 𝑃)))
67	7, 66	mpd 13	1 ⊢ (𝜑 → (∃𝑗 𝑗 ∈ 𝑇 ∧ 𝑀 < 𝑃))

Colors of variables: wff set class

This proof depends on syntax axioms: → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 846 ∧ w3a 1009 = wceq 1402 ∃wex 1545 ∈ wcel 2209 {cab 2224 ∃wrex 2529 {crab 2532 ⊆ wss 3220 class class class wbr 4130 ↦ cmpt 4192 ‘cfv 5377 (class class class)co 6085 infcinf 7323 ℝcr 8178 0cc0 8179 1c1 8180 + caddc 8182 · cmul 8184 < clt 8360 ≤ cle 8361 − cmin 8497 ℕcn 9304 2c2 9355 ℕ₀cn0 9563 ℤcz 9644 ℤ_≥cuz 9921 ...cfz 10411 mod cmo 10759 ↑cexp 10975 abscabs 11763 ℙcprime 12885 ℤ[i]cgz 13148

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-iinf 4735 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-mulrcl 8278 ax-addcom 8279 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-i2m1 8284 ax-0lt1 8285 ax-1rid 8286 ax-0id 8287 ax-rnegex 8288 ax-precex 8289 ax-cnre 8290 ax-pre-ltirr 8291 ax-pre-ltwlin 8292 ax-pre-lttrn 8293 ax-pre-apti 8294 ax-pre-ltadd 8295 ax-pre-mulgt0 8296 ax-pre-mulext 8297 ax-arch 8298 ax-caucvg 8299

This proof depends on definitions: df-bi 117 df-stab 843 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-tr 4230 df-id 4438 df-po 4441 df-iso 4442 df-iord 4511 df-on 4513 df-ilim 4514 df-suc 4516 df-iom 4738 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-isom 5386 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-recs 6576 df-irdg 6641 df-frec 6662 df-1o 6687 df-2o 6688 df-oadd 6691 df-er 6807 df-en 7023 df-dom 7024 df-fin 7025 df-sup 7324 df-inf 7325 df-pnf 8362 df-mnf 8363 df-xr 8364 df-ltxr 8365 df-le 8366 df-sub 8499 df-neg 8500 df-reap 8903 df-ap 8910 df-div 9003 df-inn 9305 df-2 9363 df-3 9364 df-4 9365 df-n0 9564 df-z 9645 df-uz 9922 df-q 10020 df-rp 10055 df-fz 10412 df-fzo 10550 df-fl 10705 df-mod 10760 df-seqfrec 10885 df-exp 10976 df-ihash 11215 df-cj 11607 df-re 11608 df-im 11609 df-rsqrt 11764 df-abs 11765 df-dvds 12555 df-gcd 12731 df-prm 12886 df-gz 13149

This theorem is used by: 4sqlem14 13183 4sqlem17 13186 4sqlem18 13187

W3C validator