4sqlem13m - Intuitionistic Logic Explorer

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Theorem 4sqlem13m 12975

Description: Lemma for 4sq 12982. (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 2231	. . 3 ⊢ {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)} = {𝑢 ∣ ∃𝑚 ∈ (0...𝑁)𝑢 = ((𝑚↑2) mod 𝑃)}
6		eqid 2231	. . 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 12974	. 2 ⊢ (𝜑 → ∃𝑘 ∈ (1...(𝑃 − 1))∃𝑢 ∈ ℤ[i] (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃))
8		simplrl 537	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ (1...(𝑃 − 1)))
9		elfznn 10288	. . . . . . . 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 11632	. . . . . . . . . . . 12 ⊢ (abs‘1) = 1
13	12	oveq1i 6027	. . . . . . . . . . 11 ⊢ ((abs‘1)↑2) = (1↑2)
14		sq1 10894	. . . . . . . . . . 11 ⊢ (1↑2) = 1
15	13, 14	eqtri 2252	. . . . . . . . . 10 ⊢ ((abs‘1)↑2) = 1
16	15	oveq2i 6028	. . . . . . . . 9 ⊢ (((abs‘𝑢)↑2) + ((abs‘1)↑2)) = (((abs‘𝑢)↑2) + 1)
17		simplrr 538	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑢 ∈ ℤ[i])
18		1z 9504	. . . . . . . . . . 11 ⊢ 1 ∈ ℤ
19		zgz 12945	. . . . . . . . . . 11 ⊢ (1 ∈ ℤ → 1 ∈ ℤ[i])
20	18, 19	ax-mp 5	. . . . . . . . . 10 ⊢ 1 ∈ ℤ[i]
21	1	4sqlem4a 12963	. . . . . . . . . 10 ⊢ ((𝑢 ∈ ℤ[i] ∧ 1 ∈ ℤ[i]) → (((abs‘𝑢)↑2) + ((abs‘1)↑2)) ∈ 𝑆)
22	17, 20, 21	sylancl 413	. . . . . . . . 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 2319	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (((abs‘𝑢)↑2) + 1) ∈ 𝑆)
24	11, 23	eqeltrrd 2309	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → (𝑘 · 𝑃) ∈ 𝑆)
25		oveq1 6024	. . . . . . . . 9 ⊢ (𝑖 = 𝑘 → (𝑖 · 𝑃) = (𝑘 · 𝑃))
26	25	eleq1d 2300	. . . . . . . 8 ⊢ (𝑖 = 𝑘 → ((𝑖 · 𝑃) ∈ 𝑆 ↔ (𝑘 · 𝑃) ∈ 𝑆))
27		4sq.6	. . . . . . . 8 ⊢ 𝑇 = {𝑖 ∈ ℕ ∣ (𝑖 · 𝑃) ∈ 𝑆}
28	26, 27	elrab2 2965	. . . . . . 7 ⊢ (𝑘 ∈ 𝑇 ↔ (𝑘 ∈ ℕ ∧ (𝑘 · 𝑃) ∈ 𝑆))
29	10, 24, 28	sylanbrc 417	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ 𝑇)
30		elex2 2819	. . . . . 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 3313	. . . . . . . 8 ⊢ 𝑇 ⊆ ℕ
33		4sq.7	. . . . . . . . 9 ⊢ 𝑀 = inf(𝑇, ℝ, < )
34		1zzd 9505	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 1 ∈ ℤ)
35		nnuz 9791	. . . . . . . . . . . 12 ⊢ ℕ = (ℤ_≥‘1)
36	35	rabeqi 2795	. . . . . . . . . . 11 ⊢ {𝑖 ∈ ℕ ∣ (𝑖 · 𝑃) ∈ 𝑆} = {𝑖 ∈ (ℤ_≥‘1) ∣ (𝑖 · 𝑃) ∈ 𝑆}
37	27, 36	eqtri 2252	. . . . . . . . . 10 ⊢ 𝑇 = {𝑖 ∈ (ℤ_≥‘1) ∣ (𝑖 · 𝑃) ∈ 𝑆}
38		elfznn 10288	. . . . . . . . . . . . . 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 12681	. . . . . . . . . . . . . . 15 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
41	4, 40	syl 14	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑃 ∈ ℕ)
42	41	ad3antrrr 492	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → 𝑃 ∈ ℕ)
43	39, 42	nnmulcld 9191	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → (𝑖 · 𝑃) ∈ ℕ)
44	43	nnnn0d 9454	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) ∧ 𝑖 ∈ (1...𝑘)) → (𝑖 · 𝑃) ∈ ℕ₀)
45	1	4sqlemsdc 12972	. . . . . . . . . . 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 10494	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → inf(𝑇, ℝ, < ) ∈ 𝑇)
48	33, 47	eqeltrid 2318	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ 𝑇)
49	32, 48	sselid 3225	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ ℕ)
50	49	nnred 9155	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ∈ ℝ)
51	10	nnred 9155	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 ∈ ℝ)
52	41	nnred 9155	. . . . . . 7 ⊢ (𝜑 → 𝑃 ∈ ℝ)
53	52	ad2antrr 488	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑃 ∈ ℝ)
54	34, 37, 29, 46	infssuzledc 10493	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → inf(𝑇, ℝ, < ) ≤ 𝑘)
55	33, 54	eqbrtrid 4123	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑀 ≤ 𝑘)
56		prmz 12682	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ)
57	4, 56	syl 14	. . . . . . . . . 10 ⊢ (𝜑 → 𝑃 ∈ ℤ)
58	57	ad2antrr 488	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑃 ∈ ℤ)
59		elfzm11 10325	. . . . . . . . 9 ⊢ ((1 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝑘 ∈ (1...(𝑃 − 1)) ↔ (𝑘 ∈ ℤ ∧ 1 ≤ 𝑘 ∧ 𝑘 < 𝑃)))
60	18, 58, 59	sylancr 414	. . . . . . . 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 1037	. . . . . 6 ⊢ (((𝜑 ∧ (𝑘 ∈ (1...(𝑃 − 1)) ∧ 𝑢 ∈ ℤ[i])) ∧ (((abs‘𝑢)↑2) + 1) = (𝑘 · 𝑃)) → 𝑘 < 𝑃)
63	50, 51, 53, 55, 62	lelttrd 8303	. . . . 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 2658	. 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

Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 841 ∧ w3a 1004 = wceq 1397 ∃wex 1540 ∈ wcel 2202 {cab 2217 ∃wrex 2511 {crab 2514 ⊆ wss 3200 class class class wbr 4088 ↦ cmpt 4150 ‘cfv 5326 (class class class)co 6017 infcinf 7181 ℝcr 8030 0cc0 8031 1c1 8032 + caddc 8034 · cmul 8036 < clt 8213 ≤ cle 8214 − cmin 8349 ℕcn 9142 2c2 9193 ℕ₀cn0 9401 ℤcz 9478 ℤ_≥cuz 9754 ...cfz 10242 mod cmo 10583 ↑cexp 10799 abscabs 11557 ℙcprime 12678 ℤ[i]cgz 12941

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-iinf 4686 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulrcl 8130 ax-addcom 8131 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-i2m1 8136 ax-0lt1 8137 ax-1rid 8138 ax-0id 8139 ax-rnegex 8140 ax-precex 8141 ax-cnre 8142 ax-pre-ltirr 8143 ax-pre-ltwlin 8144 ax-pre-lttrn 8145 ax-pre-apti 8146 ax-pre-ltadd 8147 ax-pre-mulgt0 8148 ax-pre-mulext 8149 ax-arch 8150 ax-caucvg 8151

This theorem depends on definitions: df-bi 117 df-stab 838 df-dc 842 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rmo 2518 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-if 3606 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-tr 4188 df-id 4390 df-po 4393 df-iso 4394 df-iord 4463 df-on 4465 df-ilim 4466 df-suc 4468 df-iom 4689 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-isom 5335 df-riota 5970 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-recs 6470 df-irdg 6535 df-frec 6556 df-1o 6581 df-2o 6582 df-oadd 6585 df-er 6701 df-en 6909 df-dom 6910 df-fin 6911 df-sup 7182 df-inf 7183 df-pnf 8215 df-mnf 8216 df-xr 8217 df-ltxr 8218 df-le 8219 df-sub 8351 df-neg 8352 df-reap 8754 df-ap 8761 df-div 8852 df-inn 9143 df-2 9201 df-3 9202 df-4 9203 df-n0 9402 df-z 9479 df-uz 9755 df-q 9853 df-rp 9888 df-fz 10243 df-fzo 10377 df-fl 10529 df-mod 10584 df-seqfrec 10709 df-exp 10800 df-ihash 11037 df-cj 11402 df-re 11403 df-im 11404 df-rsqrt 11558 df-abs 11559 df-dvds 12348 df-gcd 12524 df-prm 12679 df-gz 12942

This theorem is referenced by: 4sqlem14 12976 4sqlem17 12979 4sqlem18 12980

W3C validator