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Theorem elntg2 28233
Description: The line definition in the Tarski structure for the Euclidean geometry. In contrast to elntg 28232, the betweenness can be strengthened by excluding 1 resp. 0 from the related intervals (because of 𝑥𝑦). (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)) = (𝑥𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))}))
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
StepHypRef Expression
1 elntg2.1 . . 3 𝑃 = (Base‘(EEG‘𝑁))
2 eqid 2733 . . 3 (Itv‘(EEG‘𝑁)) = (Itv‘(EEG‘𝑁))
31, 2elntg 28232 . 2 (𝑁 ∈ ℕ → (LineG‘(EEG‘𝑁)) = (𝑥𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))}))
4 simpl1 1192 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑁 ∈ ℕ)
5 simpl2 1193 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑥𝑃)
6 eldifi 4126 . . . . . . . . 9 (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦𝑃)
763ad2ant3 1136 . . . . . . . 8 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦𝑃)
87adantr 482 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑦𝑃)
9 simpr 486 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑝𝑃)
104, 1, 2, 5, 8, 9ebtwntg 28230 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ 𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦)))
11 eengbas 28229 . . . . . . . . . . . 12 (𝑁 ∈ ℕ → (𝔼‘𝑁) = (Base‘(EEG‘𝑁)))
121, 11eqtr4id 2792 . . . . . . . . . . 11 (𝑁 ∈ ℕ → 𝑃 = (𝔼‘𝑁))
13123ad2ant1 1134 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑃 = (𝔼‘𝑁))
1413eleq2d 2820 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → (𝑝𝑃𝑝 ∈ (𝔼‘𝑁)))
1514biimpa 478 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑝 ∈ (𝔼‘𝑁))
1612eleq2d 2820 . . . . . . . . . . 11 (𝑁 ∈ ℕ → (𝑥𝑃𝑥 ∈ (𝔼‘𝑁)))
1716biimpa 478 . . . . . . . . . 10 ((𝑁 ∈ ℕ ∧ 𝑥𝑃) → 𝑥 ∈ (𝔼‘𝑁))
18173adant3 1133 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑥 ∈ (𝔼‘𝑁))
1918adantr 482 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑥 ∈ (𝔼‘𝑁))
2012eleq2d 2820 . . . . . . . . . . . . 13 (𝑁 ∈ ℕ → (𝑦𝑃𝑦 ∈ (𝔼‘𝑁)))
2120biimpcd 248 . . . . . . . . . . . 12 (𝑦𝑃 → (𝑁 ∈ ℕ → 𝑦 ∈ (𝔼‘𝑁)))
2221, 6syl11 33 . . . . . . . . . . 11 (𝑁 ∈ ℕ → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦 ∈ (𝔼‘𝑁)))
2322a1d 25 . . . . . . . . . 10 (𝑁 ∈ ℕ → (𝑥𝑃 → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦 ∈ (𝔼‘𝑁))))
24233imp 1112 . . . . . . . . 9 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦 ∈ (𝔼‘𝑁))
2524adantr 482 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑦 ∈ (𝔼‘𝑁))
26 brbtwn 28147 . . . . . . . 8 ((𝑝 ∈ (𝔼‘𝑁) ∧ 𝑥 ∈ (𝔼‘𝑁) ∧ 𝑦 ∈ (𝔼‘𝑁)) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖)))))
2715, 19, 25, 26syl3anc 1372 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖)))))
28 elntg2.2 . . . . . . . . 9 𝐼 = (1...𝑁)
2928raleqi 3324 . . . . . . . 8 (∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))))
3029rexbii 3095 . . . . . . 7 (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ↔ ∃𝑘 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))))
3127, 30bitr4di 289 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑝 Btwn ⟨𝑥, 𝑦⟩ ↔ ∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖)))))
3210, 31bitr3d 281 . . . . 5 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖)))))
334, 1, 2, 9, 8, 5ebtwntg 28230 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦)))
34 brbtwn 28147 . . . . . . . 8 ((𝑥 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (𝔼‘𝑁) ∧ 𝑦 ∈ (𝔼‘𝑁)) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
3519, 15, 25, 34syl3anc 1372 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑥 Btwn ⟨𝑝, 𝑦⟩ ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
3633, 35bitr3d 281 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
37 0xr 11258 . . . . . . . . . 10 0 ∈ ℝ*
38 1xr 11270 . . . . . . . . . 10 1 ∈ ℝ*
39 0le1 11734 . . . . . . . . . 10 0 ≤ 1
40 snunico 13453 . . . . . . . . . 10 ((0 ∈ ℝ* ∧ 1 ∈ ℝ* ∧ 0 ≤ 1) → ((0[,)1) ∪ {1}) = (0[,]1))
4137, 38, 39, 40mp3an 1462 . . . . . . . . 9 ((0[,)1) ∪ {1}) = (0[,]1)
4241eqcomi 2742 . . . . . . . 8 (0[,]1) = ((0[,)1) ∪ {1})
4342a1i 11 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (0[,]1) = ((0[,)1) ∪ {1}))
4443rexeqdv 3327 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑙 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
45 rexun 4190 . . . . . . 7 (∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
46 eldifsn 4790 . . . . . . . . . . . . . 14 (𝑦 ∈ (𝑃 ∖ {𝑥}) ↔ (𝑦𝑃𝑦𝑥))
47 elee 28142 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑁 ∈ ℕ → (𝑥 ∈ (𝔼‘𝑁) ↔ 𝑥:(1...𝑁)⟶ℝ))
48 ffn 6715 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑥:(1...𝑁)⟶ℝ → 𝑥 Fn (1...𝑁))
4947, 48syl6bi 253 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑁 ∈ ℕ → (𝑥 ∈ (𝔼‘𝑁) → 𝑥 Fn (1...𝑁)))
5016, 49sylbid 239 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑁 ∈ ℕ → (𝑥𝑃𝑥 Fn (1...𝑁)))
5150a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦𝑃 → (𝑁 ∈ ℕ → (𝑥𝑃𝑥 Fn (1...𝑁))))
52513imp 1112 . . . . . . . . . . . . . . . . . . . . 21 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → 𝑥 Fn (1...𝑁))
53 elee 28142 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑁 ∈ ℕ → (𝑦 ∈ (𝔼‘𝑁) ↔ 𝑦:(1...𝑁)⟶ℝ))
54 ffn 6715 . . . . . . . . . . . . . . . . . . . . . . . . 25 (𝑦:(1...𝑁)⟶ℝ → 𝑦 Fn (1...𝑁))
5553, 54syl6bi 253 . . . . . . . . . . . . . . . . . . . . . . . 24 (𝑁 ∈ ℕ → (𝑦 ∈ (𝔼‘𝑁) → 𝑦 Fn (1...𝑁)))
5620, 55sylbid 239 . . . . . . . . . . . . . . . . . . . . . . 23 (𝑁 ∈ ℕ → (𝑦𝑃𝑦 Fn (1...𝑁)))
5756a1i 11 . . . . . . . . . . . . . . . . . . . . . 22 (𝑥𝑃 → (𝑁 ∈ ℕ → (𝑦𝑃𝑦 Fn (1...𝑁))))
58573imp31 1113 . . . . . . . . . . . . . . . . . . . . 21 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → 𝑦 Fn (1...𝑁))
59 eqfnfv 7030 . . . . . . . . . . . . . . . . . . . . 21 ((𝑥 Fn (1...𝑁) ∧ 𝑦 Fn (1...𝑁)) → (𝑥 = 𝑦 ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))
6052, 58, 59syl2anc 585 . . . . . . . . . . . . . . . . . . . 20 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → (𝑥 = 𝑦 ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))
6160biimprd 247 . . . . . . . . . . . . . . . . . . 19 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖) → 𝑥 = 𝑦))
62 eqcom 2740 . . . . . . . . . . . . . . . . . . 19 (𝑦 = 𝑥𝑥 = 𝑦)
6361, 62syl6ibr 252 . . . . . . . . . . . . . . . . . 18 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖) → 𝑦 = 𝑥))
6463necon3ad 2954 . . . . . . . . . . . . . . . . 17 ((𝑦𝑃𝑁 ∈ ℕ ∧ 𝑥𝑃) → (𝑦𝑥 → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))
65643exp 1120 . . . . . . . . . . . . . . . 16 (𝑦𝑃 → (𝑁 ∈ ℕ → (𝑥𝑃 → (𝑦𝑥 → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))))
6665com24 95 . . . . . . . . . . . . . . 15 (𝑦𝑃 → (𝑦𝑥 → (𝑥𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))))
6766imp 408 . . . . . . . . . . . . . 14 ((𝑦𝑃𝑦𝑥) → (𝑥𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖))))
6846, 67sylbi 216 . . . . . . . . . . . . 13 (𝑦 ∈ (𝑃 ∖ {𝑥}) → (𝑥𝑃 → (𝑁 ∈ ℕ → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖))))
69683imp31 1113 . . . . . . . . . . . 12 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖))
7069adantr 482 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖))
7112eleq2d 2820 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℕ → (𝑝𝑃𝑝 ∈ (𝔼‘𝑁)))
72 elee 28142 . . . . . . . . . . . . . . . . . . . . . 22 (𝑁 ∈ ℕ → (𝑝 ∈ (𝔼‘𝑁) ↔ 𝑝:(1...𝑁)⟶ℝ))
7372biimpd 228 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℕ → (𝑝 ∈ (𝔼‘𝑁) → 𝑝:(1...𝑁)⟶ℝ))
7471, 73sylbid 239 . . . . . . . . . . . . . . . . . . . 20 (𝑁 ∈ ℕ → (𝑝𝑃𝑝:(1...𝑁)⟶ℝ))
75743ad2ant1 1134 . . . . . . . . . . . . . . . . . . 19 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → (𝑝𝑃𝑝:(1...𝑁)⟶ℝ))
7675imp 408 . . . . . . . . . . . . . . . . . 18 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑝:(1...𝑁)⟶ℝ)
7776ffvelcdmda 7084 . . . . . . . . . . . . . . . . 17 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑝𝑖) ∈ ℝ)
7877recnd 11239 . . . . . . . . . . . . . . . 16 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑝𝑖) ∈ ℂ)
7978mul02d 11409 . . . . . . . . . . . . . . 15 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (0 · (𝑝𝑖)) = 0)
8021, 53mpbidi 240 . . . . . . . . . . . . . . . . . . . . . 22 (𝑦𝑃 → (𝑁 ∈ ℕ → 𝑦:(1...𝑁)⟶ℝ))
8180, 6syl11 33 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℕ → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦:(1...𝑁)⟶ℝ))
8281a1d 25 . . . . . . . . . . . . . . . . . . . 20 (𝑁 ∈ ℕ → (𝑥𝑃 → (𝑦 ∈ (𝑃 ∖ {𝑥}) → 𝑦:(1...𝑁)⟶ℝ)))
83823imp 1112 . . . . . . . . . . . . . . . . . . 19 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑦:(1...𝑁)⟶ℝ)
8483adantr 482 . . . . . . . . . . . . . . . . . 18 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑦:(1...𝑁)⟶ℝ)
8584ffvelcdmda 7084 . . . . . . . . . . . . . . . . 17 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑦𝑖) ∈ ℝ)
8685recnd 11239 . . . . . . . . . . . . . . . 16 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑦𝑖) ∈ ℂ)
8786mullidd 11229 . . . . . . . . . . . . . . 15 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (1 · (𝑦𝑖)) = (𝑦𝑖))
8879, 87oveq12d 7424 . . . . . . . . . . . . . 14 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))) = (0 + (𝑦𝑖)))
8986addlidd 11412 . . . . . . . . . . . . . 14 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (0 + (𝑦𝑖)) = (𝑦𝑖))
9088, 89eqtrd 2773 . . . . . . . . . . . . 13 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))) = (𝑦𝑖))
9190eqeq2d 2744 . . . . . . . . . . . 12 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))) ↔ (𝑥𝑖) = (𝑦𝑖)))
9291ralbidva 3176 . . . . . . . . . . 11 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖)))
9370, 92mtbird 325 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))))
94 1re 11211 . . . . . . . . . . 11 1 ∈ ℝ
95 oveq2 7414 . . . . . . . . . . . . . . . . 17 (𝑙 = 1 → (1 − 𝑙) = (1 − 1))
9695oveq1d 7421 . . . . . . . . . . . . . . . 16 (𝑙 = 1 → ((1 − 𝑙) · (𝑝𝑖)) = ((1 − 1) · (𝑝𝑖)))
97 1m1e0 12281 . . . . . . . . . . . . . . . . 17 (1 − 1) = 0
9897oveq1i 7416 . . . . . . . . . . . . . . . 16 ((1 − 1) · (𝑝𝑖)) = (0 · (𝑝𝑖))
9996, 98eqtrdi 2789 . . . . . . . . . . . . . . 15 (𝑙 = 1 → ((1 − 𝑙) · (𝑝𝑖)) = (0 · (𝑝𝑖)))
100 oveq1 7413 . . . . . . . . . . . . . . 15 (𝑙 = 1 → (𝑙 · (𝑦𝑖)) = (1 · (𝑦𝑖)))
10199, 100oveq12d 7424 . . . . . . . . . . . . . 14 (𝑙 = 1 → (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))))
102101eqeq2d 2744 . . . . . . . . . . . . 13 (𝑙 = 1 → ((𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ (𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖)))))
103102ralbidv 3178 . . . . . . . . . . . 12 (𝑙 = 1 → (∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖)))))
104103rexsng 4678 . . . . . . . . . . 11 (1 ∈ ℝ → (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖)))))
10594, 104ax-mp 5 . . . . . . . . . 10 (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = ((0 · (𝑝𝑖)) + (1 · (𝑦𝑖))))
10693, 105sylnibr 329 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))
10728raleqi 3324 . . . . . . . . . . 11 (∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))
108107rexbii 3095 . . . . . . . . . 10 (∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))
109 biorf 936 . . . . . . . . . 10 (¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) → (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))))
110108, 109bitrid 283 . . . . . . . . 9 (¬ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) → (∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))))
111106, 110syl 17 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ (∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))))))
112 orcom 869 . . . . . . . 8 ((∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))) ↔ (∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
113111, 112bitr2di 288 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ((∃𝑙 ∈ (0[,)1)∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑙 ∈ {1}∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
11445, 113bitrid 283 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑙 ∈ ((0[,)1) ∪ {1})∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
11536, 44, 1143bitrd 305 . . . . 5 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ↔ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖)))))
1164, 1, 2, 5, 9, 8ebtwntg 28230 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝)))
117 brbtwn 28147 . . . . . . . 8 ((𝑦 ∈ (𝔼‘𝑁) ∧ 𝑥 ∈ (𝔼‘𝑁) ∧ 𝑝 ∈ (𝔼‘𝑁)) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
11825, 19, 15, 117syl3anc 1372 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑦 Btwn ⟨𝑥, 𝑝⟩ ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
119116, 118bitr3d 281 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝) ↔ ∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
120 snunioc 13454 . . . . . . . . . 10 ((0 ∈ ℝ* ∧ 1 ∈ ℝ* ∧ 0 ≤ 1) → ({0} ∪ (0(,]1)) = (0[,]1))
12137, 38, 39, 120mp3an 1462 . . . . . . . . 9 ({0} ∪ (0(,]1)) = (0[,]1)
122121eqcomi 2742 . . . . . . . 8 (0[,]1) = ({0} ∪ (0(,]1))
123122a1i 11 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (0[,]1) = ({0} ∪ (0(,]1)))
124123rexeqdv 3327 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑚 ∈ (0[,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
125 rexun 4190 . . . . . . 7 (∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
126 eqcom 2740 . . . . . . . . . . . 12 ((𝑥𝑖) = (𝑦𝑖) ↔ (𝑦𝑖) = (𝑥𝑖))
127126ralbii 3094 . . . . . . . . . . 11 (∀𝑖 ∈ (1...𝑁)(𝑥𝑖) = (𝑦𝑖) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (𝑥𝑖))
12870, 127sylnib 328 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (𝑥𝑖))
12916biimpd 228 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℕ → (𝑥𝑃𝑥 ∈ (𝔼‘𝑁)))
130129, 47sylibd 238 . . . . . . . . . . . . . . . . . . . 20 (𝑁 ∈ ℕ → (𝑥𝑃𝑥:(1...𝑁)⟶ℝ))
131130imp 408 . . . . . . . . . . . . . . . . . . 19 ((𝑁 ∈ ℕ ∧ 𝑥𝑃) → 𝑥:(1...𝑁)⟶ℝ)
1321313adant3 1133 . . . . . . . . . . . . . . . . . 18 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → 𝑥:(1...𝑁)⟶ℝ)
133132adantr 482 . . . . . . . . . . . . . . . . 17 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → 𝑥:(1...𝑁)⟶ℝ)
134133ffvelcdmda 7084 . . . . . . . . . . . . . . . 16 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑥𝑖) ∈ ℝ)
135134recnd 11239 . . . . . . . . . . . . . . 15 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (𝑥𝑖) ∈ ℂ)
136135mullidd 11229 . . . . . . . . . . . . . 14 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → (1 · (𝑥𝑖)) = (𝑥𝑖))
137136, 79oveq12d 7424 . . . . . . . . . . . . 13 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))) = ((𝑥𝑖) + 0))
138135addridd 11411 . . . . . . . . . . . . 13 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑥𝑖) + 0) = (𝑥𝑖))
139137, 138eqtrd 2773 . . . . . . . . . . . 12 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))) = (𝑥𝑖))
140139eqeq2d 2744 . . . . . . . . . . 11 ((((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) ∧ 𝑖 ∈ (1...𝑁)) → ((𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))) ↔ (𝑦𝑖) = (𝑥𝑖)))
141140ralbidva 3176 . . . . . . . . . 10 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (𝑥𝑖)))
142128, 141mtbird 325 . . . . . . . . 9 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))))
143 0re 11213 . . . . . . . . . 10 0 ∈ ℝ
144 oveq2 7414 . . . . . . . . . . . . . . . 16 (𝑚 = 0 → (1 − 𝑚) = (1 − 0))
145144oveq1d 7421 . . . . . . . . . . . . . . 15 (𝑚 = 0 → ((1 − 𝑚) · (𝑥𝑖)) = ((1 − 0) · (𝑥𝑖)))
146 1m0e1 12330 . . . . . . . . . . . . . . . 16 (1 − 0) = 1
147146oveq1i 7416 . . . . . . . . . . . . . . 15 ((1 − 0) · (𝑥𝑖)) = (1 · (𝑥𝑖))
148145, 147eqtrdi 2789 . . . . . . . . . . . . . 14 (𝑚 = 0 → ((1 − 𝑚) · (𝑥𝑖)) = (1 · (𝑥𝑖)))
149 oveq1 7413 . . . . . . . . . . . . . 14 (𝑚 = 0 → (𝑚 · (𝑝𝑖)) = (0 · (𝑝𝑖)))
150148, 149oveq12d 7424 . . . . . . . . . . . . 13 (𝑚 = 0 → (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))))
151150eqeq2d 2744 . . . . . . . . . . . 12 (𝑚 = 0 → ((𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ (𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖)))))
152151ralbidv 3178 . . . . . . . . . . 11 (𝑚 = 0 → (∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖)))))
153152rexsng 4678 . . . . . . . . . 10 (0 ∈ ℝ → (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖)))))
154143, 153ax-mp 5 . . . . . . . . 9 (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = ((1 · (𝑥𝑖)) + (0 · (𝑝𝑖))))
155142, 154sylnibr 329 . . . . . . . 8 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))
15628raleqi 3324 . . . . . . . . . 10 (∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))
157156rexbii 3095 . . . . . . . . 9 (∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))
158 biorf 936 . . . . . . . . 9 (¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) → (∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))))
159157, 158bitrid 283 . . . . . . . 8 (¬ ∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) → (∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))))
160155, 159syl 17 . . . . . . 7 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ (∃𝑚 ∈ {0}∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))))
161125, 160bitr4id 290 . . . . . 6 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (∃𝑚 ∈ ({0} ∪ (0(,]1))∀𝑖 ∈ (1...𝑁)(𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
162119, 124, 1613bitrd 305 . . . . 5 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → (𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝) ↔ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖)))))
16332, 115, 1623orbi123d 1436 . . . 4 (((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) ∧ 𝑝𝑃) → ((𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝)) ↔ (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))))
164163rabbidva 3440 . . 3 ((𝑁 ∈ ℕ ∧ 𝑥𝑃𝑦 ∈ (𝑃 ∖ {𝑥})) → {𝑝𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))} = {𝑝𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))})
165164mpoeq3dva 7483 . 2 (𝑁 ∈ ℕ → (𝑥𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝𝑃 ∣ (𝑝 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑥 ∈ (𝑝(Itv‘(EEG‘𝑁))𝑦) ∨ 𝑦 ∈ (𝑥(Itv‘(EEG‘𝑁))𝑝))}) = (𝑥𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))}))
1663, 165eqtrd 2773 1 (𝑁 ∈ ℕ → (LineG‘(EEG‘𝑁)) = (𝑥𝑃, 𝑦 ∈ (𝑃 ∖ {𝑥}) ↦ {𝑝𝑃 ∣ (∃𝑘 ∈ (0[,]1)∀𝑖𝐼 (𝑝𝑖) = (((1 − 𝑘) · (𝑥𝑖)) + (𝑘 · (𝑦𝑖))) ∨ ∃𝑙 ∈ (0[,)1)∀𝑖𝐼 (𝑥𝑖) = (((1 − 𝑙) · (𝑝𝑖)) + (𝑙 · (𝑦𝑖))) ∨ ∃𝑚 ∈ (0(,]1)∀𝑖𝐼 (𝑦𝑖) = (((1 − 𝑚) · (𝑥𝑖)) + (𝑚 · (𝑝𝑖))))}))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 397  wo 846  w3o 1087  w3a 1088   = wceq 1542  wcel 2107  wne 2941  wral 3062  wrex 3071  {crab 3433  cdif 3945  cun 3946  {csn 4628  cop 4634   class class class wbr 5148   Fn wfn 6536  wf 6537  cfv 6541  (class class class)co 7406  cmpo 7408  cr 11106  0cc0 11107  1c1 11108   + caddc 11110   · cmul 11112  *cxr 11244  cle 11246  cmin 11441  cn 12209  (,]cioc 13322  [,)cico 13323  [,]cicc 13324  ...cfz 13481  Basecbs 17141  Itvcitv 27674  LineGclng 27675  𝔼cee 28136   Btwn cbtwn 28137  EEGceeng 28225
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7722  ax-cnex 11163  ax-resscn 11164  ax-1cn 11165  ax-icn 11166  ax-addcl 11167  ax-addrcl 11168  ax-mulcl 11169  ax-mulrcl 11170  ax-mulcom 11171  ax-addass 11172  ax-mulass 11173  ax-distr 11174  ax-i2m1 11175  ax-1ne0 11176  ax-1rid 11177  ax-rnegex 11178  ax-rrecex 11179  ax-cnre 11180  ax-pre-lttri 11181  ax-pre-lttrn 11182  ax-pre-ltadd 11183  ax-pre-mulgt0 11184
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-nel 3048  df-ral 3063  df-rex 3072  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-iun 4999  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-pred 6298  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6493  df-fun 6543  df-fn 6544  df-f 6545  df-f1 6546  df-fo 6547  df-f1o 6548  df-fv 6549  df-riota 7362  df-ov 7409  df-oprab 7410  df-mpo 7411  df-om 7853  df-1st 7972  df-2nd 7973  df-frecs 8263  df-wrecs 8294  df-recs 8368  df-rdg 8407  df-1o 8463  df-er 8700  df-map 8819  df-en 8937  df-dom 8938  df-sdom 8939  df-fin 8940  df-pnf 11247  df-mnf 11248  df-xr 11249  df-ltxr 11250  df-le 11251  df-sub 11443  df-neg 11444  df-nn 12210  df-2 12272  df-3 12273  df-4 12274  df-5 12275  df-6 12276  df-7 12277  df-8 12278  df-9 12279  df-n0 12470  df-z 12556  df-dec 12675  df-uz 12820  df-ioc 13326  df-ico 13327  df-icc 13328  df-fz 13482  df-seq 13964  df-sum 15630  df-struct 17077  df-slot 17112  df-ndx 17124  df-base 17142  df-ds 17216  df-itv 27676  df-lng 27677  df-ee 28139  df-btwn 28140  df-eeng 28226
This theorem is referenced by:  eenglngeehlnm  47379
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