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Theorem elntg2 26771

Description: The line definition in the Tarski structure for the Euclidean geometry. In contrast to elntg 26770, the betweenness can be strengthened by excluding 1 resp. 0 from the related intervals (because of 𝑥 ≠ 𝑦). (Contributed by AV, 14-Feb-2023.)

**Hypotheses**
Ref	Expression
elntg2.1	⊢ 𝑃 = (Base‘(EEG‘𝑁))
elntg2.2	⊢ 𝐼 = (1...𝑁)

**Assertion**
Ref	Expression
elntg2	⊢ (𝑁 ∈ ℕ → (LineG‘(EEG‘𝑁)) = (𝑥 ∈ 𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝 ∈ 𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))}))

Distinct variable groups: 𝑖,𝐼 𝑖,𝑁,𝑘,𝑙,𝑚,𝑝,𝑥,𝑦 𝑃,𝑖,𝑝 Allowed substitution hints: 𝑃(𝑥,𝑦,𝑘,𝑚,𝑙) 𝐼(𝑥,𝑦,𝑘,𝑚,𝑝,𝑙)

**Proof of Theorem elntg2**
Step	Hyp	Ref	Expression
1		elntg2.1	. . 3 ⊢ 𝑃 = (Base‘(EEG‘𝑁))
2		eqid 2821	. . 3 ⊢ (Itv‘(EEG‘𝑁)) = (Itv‘(EEG‘𝑁))
3	1, 2	elntg 26770	. 2 ⊢ (𝑁 ∈ ℕ → (LineG‘(EEG‘𝑁)) = (𝑥 ∈ 𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝 ∈ 𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))}))
4		simpl1 1187	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑁 ∈ ℕ)
5		simpl2 1188	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑥 ∈ 𝑃)
6		eldifi 4103	. . . . . . . . 9 ⊢ (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦 ∈ 𝑃)
7	6	3ad2ant3 1131	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦 ∈ 𝑃)
8	7	adantr 483	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑦 ∈ 𝑃)
9		simpr 487	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑝 ∈ 𝑃)
10	4, 1, 2, 5, 8, 9	ebtwntg 26768	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ 𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦)))
11		eengbas 26767	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → (𝔼‘𝑁) = (Base‘(EEG‘𝑁)))
12	11, 1	syl6reqr 2875	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → 𝑃 = (𝔼‘𝑁))
13	12	3ad2ant1 1129	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑃 = (𝔼‘𝑁))
14	13	eleq2d 2898	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → (𝑝 ∈ 𝑃 ↔ 𝑝 ∈ (𝔼‘𝑁)))
15	14	biimpa 479	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑝 ∈ (𝔼‘𝑁))
16	12	eleq2d 2898	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 ↔ 𝑥 ∈ (𝔼‘𝑁)))
17	16	biimpa 479	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → 𝑥 ∈ (𝔼‘𝑁))
18	17	3adant3 1128	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑥 ∈ (𝔼‘𝑁))
19	18	adantr 483	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑥 ∈ (𝔼‘𝑁))
20	12	eleq2d 2898	. . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ 𝑃 ↔ 𝑦 ∈ (𝔼‘𝑁)))
21	20	biimpcd 251	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ 𝑃 → (𝑁 ∈ ℕ → 𝑦 ∈ (𝔼‘𝑁)))
22	21, 6	syl11 33	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦 ∈ (𝔼‘𝑁)))
23	22	a1d 25	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦 ∈ (𝔼‘𝑁))))
24	23	3imp 1107	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦 ∈ (𝔼‘𝑁))
25	24	adantr 483	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑦 ∈ (𝔼‘𝑁))
26		brbtwn 26685	. . . . . . . 8 ⊢ ((𝑝 ∈ (𝔼‘𝑁) ∧ 𝑥 ∈ (𝔼‘𝑁) ∧ 𝑦 ∈ (𝔼‘𝑁)) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖)))))
27	15, 19, 25, 26	syl3anc 1367	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖)))))
28		elntg2.2	. . . . . . . . 9 ⊢ 𝐼 = (1...𝑁)
29	28	raleqi 3413	. . . . . . . 8 ⊢ (∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))))
30	29	rexbii 3247	. . . . . . 7 ⊢ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))))
31	27, 30	syl6bbr 291	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖)))))
32	10, 31	bitr3d 283	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖)))))
33	4, 1, 2, 9, 8, 5	ebtwntg 26768	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦)))
34		brbtwn 26685	. . . . . . . 8 ⊢ ((𝑥 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (𝔼‘𝑁) ∧ 𝑦 ∈ (𝔼‘𝑁)) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
35	19, 15, 25, 34	syl3anc 1367	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
36	33, 35	bitr3d 283	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
37		0xr 10688	. . . . . . . . . 10 ⊢ 0 ∈ ℝ^*
38		1xr 10700	. . . . . . . . . 10 ⊢ 1 ∈ ℝ^*
39		0le1 11163	. . . . . . . . . 10 ⊢ 0 ≤ 1
40		snunico 12866	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ 1 ∈ ℝ^* ∧ 0 ≤ 1) → ((0[,)1) ∪ {1}) = (0[,]1))
41	37, 38, 39, 40	mp3an 1457	. . . . . . . . 9 ⊢ ((0[,)1) ∪ {1}) = (0[,]1)
42	41	eqcomi 2830	. . . . . . . 8 ⊢ (0[,]1) = ((0[,)1) ∪ {1})
43	42	a1i 11	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (0[,]1) = ((0[,)1) ∪ {1}))
44	43	rexeqdv 3416	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
45		rexun 4166	. . . . . . 7 ⊢ (∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
46		eldifsn 4719	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ (𝑃 ∖ {𝑥}) ↔ (𝑦 ∈ 𝑃 ∧ 𝑦 ≠ 𝑥))
47		elee 26680	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ (𝔼‘𝑁) ↔ 𝑥:(1...𝑁)⟶ℝ))
48		ffn 6514	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑥:(1...𝑁)⟶ℝ → 𝑥 Fn (1...𝑁))
49	47, 48	syl6bi 255	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ (𝔼‘𝑁) → 𝑥 Fn (1...𝑁)))
50	16, 49	sylbid 242	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → 𝑥 Fn (1...𝑁)))
51	50	a1i 11	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ 𝑃 → (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → 𝑥 Fn (1...𝑁))))
52	51	3imp 1107	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → 𝑥 Fn (1...𝑁))
53		elee 26680	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ (𝔼‘𝑁) ↔ 𝑦:(1...𝑁)⟶ℝ))
54		ffn 6514	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦:(1...𝑁)⟶ℝ → 𝑦 Fn (1...𝑁))
55	53, 54	syl6bi 255	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ (𝔼‘𝑁) → 𝑦 Fn (1...𝑁)))
56	20, 55	sylbid 242	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ 𝑃 → 𝑦 Fn (1...𝑁)))
57	56	a1i 11	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑥 ∈ 𝑃 → (𝑁 ∈ ℕ → (𝑦 ∈ 𝑃 → 𝑦 Fn (1...𝑁))))
58	57	3imp31 1108	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → 𝑦 Fn (1...𝑁))
59		eqfnfv 6802	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑥 Fn (1...𝑁) ∧ 𝑦 Fn (1...𝑁)) → (𝑥 = 𝑦 ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))
60	52, 58, 59	syl2anc 586	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → (𝑥 = 𝑦 ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))
61	60	biimprd 250	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖) → 𝑥 = 𝑦))
62		eqcom 2828	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 = 𝑥 ↔ 𝑥 = 𝑦)
63	61, 62	syl6ibr 254	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖) → 𝑦 = 𝑥))
64	63	necon3ad 3029	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → (𝑦 ≠ 𝑥 → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))
65	64	3exp 1115	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 ∈ 𝑃 → (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → (𝑦 ≠ 𝑥 → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))))
66	65	com24 95	. . . . . . . . . . . . . . 15 ⊢ (𝑦 ∈ 𝑃 → (𝑦 ≠ 𝑥 → (𝑥 ∈ 𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))))
67	66	imp 409	. . . . . . . . . . . . . 14 ⊢ ((𝑦 ∈ 𝑃 ∧ 𝑦 ≠ 𝑥) → (𝑥 ∈ 𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖))))
68	46, 67	sylbi 219	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ (𝑃 ∖ {𝑥}) → (𝑥 ∈ 𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖))))
69	68	3imp31 1108	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖))
70	69	adantr 483	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖))
71	12	eleq2d 2898	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ → (𝑝 ∈ 𝑃 ↔ 𝑝 ∈ (𝔼‘𝑁)))
72		elee 26680	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑁 ∈ ℕ → (𝑝 ∈ (𝔼‘𝑁) ↔ 𝑝:(1...𝑁)⟶ℝ))
73	72	biimpd 231	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ → (𝑝 ∈ (𝔼‘𝑁) → 𝑝:(1...𝑁)⟶ℝ))
74	71, 73	sylbid 242	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ → (𝑝 ∈ 𝑃 → 𝑝:(1...𝑁)⟶ℝ))
75	74	3ad2ant1 1129	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → (𝑝 ∈ 𝑃 → 𝑝:(1...𝑁)⟶ℝ))
76	75	imp 409	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑝:(1...𝑁)⟶ℝ)
77	76	ffvelrnda 6851	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑝‘𝑖) ∈ ℝ)
78	77	recnd 10669	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑝‘𝑖) ∈ ℂ)
79	78	mul02d 10838	. . . . . . . . . . . . . . 15 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (0 · (𝑝‘𝑖)) = 0)
80	21, 53	mpbidi 243	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ 𝑃 → (𝑁 ∈ ℕ → 𝑦:(1...𝑁)⟶ℝ))
81	80, 6	syl11 33	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦:(1...𝑁)⟶ℝ))
82	81	a1d 25	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦:(1...𝑁)⟶ℝ)))
83	82	3imp 1107	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦:(1...𝑁)⟶ℝ)
84	83	adantr 483	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑦:(1...𝑁)⟶ℝ)
85	84	ffvelrnda 6851	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑦‘𝑖) ∈ ℝ)
86	85	recnd 10669	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑦‘𝑖) ∈ ℂ)
87	86	mulid2d 10659	. . . . . . . . . . . . . . 15 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (1 · (𝑦‘𝑖)) = (𝑦‘𝑖))
88	79, 87	oveq12d 7174	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))) = (0 + (𝑦‘𝑖)))
89	86	addid2d 10841	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (0 + (𝑦‘𝑖)) = (𝑦‘𝑖))
90	88, 89	eqtrd 2856	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))) = (𝑦‘𝑖))
91	90	eqeq2d 2832	. . . . . . . . . . . 12 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))) ↔ (𝑥‘𝑖) = (𝑦‘𝑖)))
92	91	ralbidva 3196	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖)))
93	70, 92	mtbird 327	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))))
94		1re 10641	. . . . . . . . . . 11 ⊢ 1 ∈ ℝ
95		oveq2 7164	. . . . . . . . . . . . . . . . 17 ⊢ (𝑙 = 1 → (1 − 𝑙) = (1 − 1))
96	95	oveq1d 7171	. . . . . . . . . . . . . . . 16 ⊢ (𝑙 = 1 → ((1 − 𝑙) · (𝑝‘𝑖)) = ((1 − 1) · (𝑝‘𝑖)))
97		1m1e0 11710	. . . . . . . . . . . . . . . . 17 ⊢ (1 − 1) = 0
98	97	oveq1i 7166	. . . . . . . . . . . . . . . 16 ⊢ ((1 − 1) · (𝑝‘𝑖)) = (0 · (𝑝‘𝑖))
99	96, 98	syl6eq 2872	. . . . . . . . . . . . . . 15 ⊢ (𝑙 = 1 → ((1 − 𝑙) · (𝑝‘𝑖)) = (0 · (𝑝‘𝑖)))
100		oveq1 7163	. . . . . . . . . . . . . . 15 ⊢ (𝑙 = 1 → (𝑙 · (𝑦‘𝑖)) = (1 · (𝑦‘𝑖)))
101	99, 100	oveq12d 7174	. . . . . . . . . . . . . 14 ⊢ (𝑙 = 1 → (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))))
102	101	eqeq2d 2832	. . . . . . . . . . . . 13 ⊢ (𝑙 = 1 → ((𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ (𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖)))))
103	102	ralbidv 3197	. . . . . . . . . . . 12 ⊢ (𝑙 = 1 → (∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖)))))
104	103	rexsng 4614	. . . . . . . . . . 11 ⊢ (1 ∈ ℝ → (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖)))))
105	94, 104	ax-mp 5	. . . . . . . . . 10 ⊢ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = ((0 · (𝑝‘𝑖)) + (1 · (𝑦‘𝑖))))
106	93, 105	sylnibr 331	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))
107	28	raleqi 3413	. . . . . . . . . . 11 ⊢ (∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))
108	107	rexbii 3247	. . . . . . . . . 10 ⊢ (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))
109		biorf 933	. . . . . . . . . 10 ⊢ (¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) → (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))))
110	108, 109	syl5bb 285	. . . . . . . . 9 ⊢ (¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) → (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))))
111	106, 110	syl 17	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))))))
112		orcom 866	. . . . . . . 8 ⊢ ((∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))) ↔ (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
113	111, 112	syl6rbb 290	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ((∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
114	45, 113	syl5bb 285	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
115	36, 44, 114	3bitrd 307	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖)))))
116	4, 1, 2, 5, 9, 8	ebtwntg 26768	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝)))
117		brbtwn 26685	. . . . . . . 8 ⊢ ((𝑦 ∈ (𝔼‘𝑁) ∧ 𝑥 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (𝔼‘𝑁)) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
118	25, 19, 15, 117	syl3anc 1367	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
119	116, 118	bitr3d 283	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝) ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
120		snunioc 12867	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ 1 ∈ ℝ^* ∧ 0 ≤ 1) → ({0} ∪ (0(,]1)) = (0[,]1))
121	37, 38, 39, 120	mp3an 1457	. . . . . . . . 9 ⊢ ({0} ∪ (0(,]1)) = (0[,]1)
122	121	eqcomi 2830	. . . . . . . 8 ⊢ (0[,]1) = ({0} ∪ (0(,]1))
123	122	a1i 11	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (0[,]1) = ({0} ∪ (0(,]1)))
124	123	rexeqdv 3416	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
125		eqcom 2828	. . . . . . . . . . . 12 ⊢ ((𝑥‘𝑖) = (𝑦‘𝑖) ↔ (𝑦‘𝑖) = (𝑥‘𝑖))
126	125	ralbii 3165	. . . . . . . . . . 11 ⊢ (∀𝑖 ∈ (1...𝑁)(𝑥‘𝑖) = (𝑦‘𝑖) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (𝑥‘𝑖))
127	70, 126	sylnib 330	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (𝑥‘𝑖))
128	16	biimpd 231	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → 𝑥 ∈ (𝔼‘𝑁)))
129	128, 47	sylibd 241	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃 → 𝑥:(1...𝑁)⟶ℝ))
130	129	imp 409	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃) → 𝑥:(1...𝑁)⟶ℝ)
131	130	3adant3 1128	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑥:(1...𝑁)⟶ℝ)
132	131	adantr 483	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → 𝑥:(1...𝑁)⟶ℝ)
133	132	ffvelrnda 6851	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑥‘𝑖) ∈ ℝ)
134	133	recnd 10669	. . . . . . . . . . . . . . 15 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑥‘𝑖) ∈ ℂ)
135	134	mulid2d 10659	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (1 · (𝑥‘𝑖)) = (𝑥‘𝑖))
136	135, 79	oveq12d 7174	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))) = ((𝑥‘𝑖) + 0))
137	134	addid1d 10840	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑥‘𝑖) + 0) = (𝑥‘𝑖))
138	136, 137	eqtrd 2856	. . . . . . . . . . . 12 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))) = (𝑥‘𝑖))
139	138	eqeq2d 2832	. . . . . . . . . . 11 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))) ↔ (𝑦‘𝑖) = (𝑥‘𝑖)))
140	139	ralbidva 3196	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (𝑥‘𝑖)))
141	127, 140	mtbird 327	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))))
142		0re 10643	. . . . . . . . . 10 ⊢ 0 ∈ ℝ
143		oveq2 7164	. . . . . . . . . . . . . . . 16 ⊢ (𝑚 = 0 → (1 − 𝑚) = (1 − 0))
144	143	oveq1d 7171	. . . . . . . . . . . . . . 15 ⊢ (𝑚 = 0 → ((1 − 𝑚) · (𝑥‘𝑖)) = ((1 − 0) · (𝑥‘𝑖)))
145		1m0e1 11759	. . . . . . . . . . . . . . . 16 ⊢ (1 − 0) = 1
146	145	oveq1i 7166	. . . . . . . . . . . . . . 15 ⊢ ((1 − 0) · (𝑥‘𝑖)) = (1 · (𝑥‘𝑖))
147	144, 146	syl6eq 2872	. . . . . . . . . . . . . 14 ⊢ (𝑚 = 0 → ((1 − 𝑚) · (𝑥‘𝑖)) = (1 · (𝑥‘𝑖)))
148		oveq1 7163	. . . . . . . . . . . . . 14 ⊢ (𝑚 = 0 → (𝑚 · (𝑝‘𝑖)) = (0 · (𝑝‘𝑖)))
149	147, 148	oveq12d 7174	. . . . . . . . . . . . 13 ⊢ (𝑚 = 0 → (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))))
150	149	eqeq2d 2832	. . . . . . . . . . . 12 ⊢ (𝑚 = 0 → ((𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ (𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖)))))
151	150	ralbidv 3197	. . . . . . . . . . 11 ⊢ (𝑚 = 0 → (∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖)))))
152	151	rexsng 4614	. . . . . . . . . 10 ⊢ (0 ∈ ℝ → (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖)))))
153	142, 152	ax-mp 5	. . . . . . . . 9 ⊢ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = ((1 · (𝑥‘𝑖)) + (0 · (𝑝‘𝑖))))
154	141, 153	sylnibr 331	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))
155	28	raleqi 3413	. . . . . . . . . 10 ⊢ (∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))
156	155	rexbii 3247	. . . . . . . . 9 ⊢ (∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))
157		biorf 933	. . . . . . . . 9 ⊢ (¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) → (∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))))
158	156, 157	syl5bb 285	. . . . . . . 8 ⊢ (¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) → (∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))))
159	154, 158	syl 17	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))))
160		rexun 4166	. . . . . . 7 ⊢ (∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
161	159, 160	syl6rbbr 292	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
162	119, 124, 161	3bitrd 307	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → (𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖)))))
163	32, 115, 162	3orbi123d 1431	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝 ∈ 𝑃) → ((𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝)) ↔ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))))
164	163	rabbidva 3478	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑥 ∈ 𝑃 ∧ 𝑦 ∈ (𝑃 ∖ {𝑥})) → {𝑝 ∈ 𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))} = {𝑝 ∈ 𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))})
165	164	mpoeq3dva 7231	. 2 ⊢ (𝑁 ∈ ℕ → (𝑥 ∈ 𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝 ∈ 𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))}) = (𝑥 ∈ 𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝 ∈ 𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))}))
166	3, 165	eqtrd 2856	1 ⊢ (𝑁 ∈ ℕ → (LineG‘(EEG‘𝑁)) = (𝑥 ∈ 𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝 ∈ 𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖 ∈ 𝐼 (𝑝‘𝑖) = (((1 − 𝑘) · (𝑥‘𝑖)) + (𝑘 · (𝑦‘𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ 𝐼 (𝑥‘𝑖) = (((1 − 𝑙) · (𝑝‘𝑖)) + (𝑙 · (𝑦‘𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ 𝐼 (𝑦‘𝑖) = (((1 − 𝑚) · (𝑥‘𝑖)) + (𝑚 · (𝑝‘𝑖))))}))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 398 ∨ wo 843 ∨ w3o 1082 ∧ w3a 1083 = wceq 1537 ∈ wcel 2114 ≠ wne 3016 ∀wral 3138 ∃wrex 3139 {crab 3142 ∖ cdif 3933 ∪ cun 3934 {csn 4567 ⟨cop 4573 class class class wbr 5066 Fn wfn 6350 ⟶wf 6351 ‘cfv 6355 (class class class)co 7156 ∈ cmpo 7158 ℝcr 10536 0cc0 10537 1c1 10538 + caddc 10540 · cmul 10542 ℝ^*cxr 10674 ≤ cle 10676 − cmin 10870 ℕcn 11638 (,]cioc 12740 [,)cico 12741 [,]cicc 12742 ...cfz 12893 Basecbs 16483 Itvcitv 26222 LineGclng 26223 𝔼cee 26674 Btwn cbtwn 26675 EEGceeng 26763

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-rep 5190 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-pre-mulgt0 10614

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-int 4877 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-1st 7689 df-2nd 7690 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-1o 8102 df-oadd 8106 df-er 8289 df-map 8408 df-en 8510 df-dom 8511 df-sdom 8512 df-fin 8513 df-pnf 10677 df-mnf 10678 df-xr 10679 df-ltxr 10680 df-le 10681 df-sub 10872 df-neg 10873 df-nn 11639 df-2 11701 df-3 11702 df-4 11703 df-5 11704 df-6 11705 df-7 11706 df-8 11707 df-9 11708 df-n0 11899 df-z 11983 df-dec 12100 df-uz 12245 df-ioc 12744 df-ico 12745 df-icc 12746 df-fz 12894 df-seq 13371 df-sum 15043 df-struct 16485 df-ndx 16486 df-slot 16487 df-base 16489 df-ds 16587 df-itv 26224 df-lng 26225 df-ee 26677 df-btwn 26678 df-eeng 26764

This theorem is referenced by: eenglngeehlnm 44775

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