Step
*
1
1
1
1
1
of Lemma
extend-half-cube-face
1. k : ℕ
2. a : ℚCube(k)
3. b : ℚCube(k)
4. c : ℚCube(k)
5. ∀i:ℕk. (↑Inhabited(a i))
6. 0 < dim(b)
7. 0 < dim(c)
8. ∀i:ℕk. a i ≤ b i
9. ∀i:ℕk. (↑is-half-interval(b i;c i))
10. dim(a) = (dim(b) - 1) ∈ ℤ
11. i : ℕk
12. dim(c i) = 1 ∈ ℤ
13. ∀j:ℕk. ((¬(j = i ∈ ℤ))
⇒ ((a j) = (b j) ∈ ℚInterval))
14. (a i) = [fst((b i))] ∈ ℚInterval
15. ((fst((b i))) = (fst((c i))) ∈ ℚ) ∧ ((snd((b i))) = qavg(fst((c i));snd((c i))) ∈ ℚ)
⊢ ((∃!d:ℚCube(k). ((↑is-half-cube(k;a;d)) ∧ (∀i:ℕk. d i ≤ c i)))
∧ (∀b':ℚCube(k). ((↑is-half-cube(k;b';c))
⇒ (∀i:ℕk. a i ≤ b' i)
⇒ (b' = b ∈ ℚCube(k)))))
∨ ((∃!b':ℚCube(k). ((∀i:ℕk. a i ≤ b' i) ∧ (↑is-half-cube(k;b';c)) ∧ (¬(b' = b ∈ ℚCube(k)))))
∧ has-interior-point(k;a;c))
BY
{ Thin 7 }
1
1. k : ℕ
2. a : ℚCube(k)
3. b : ℚCube(k)
4. c : ℚCube(k)
5. ∀i:ℕk. (↑Inhabited(a i))
6. 0 < dim(b)
7. ∀i:ℕk. a i ≤ b i
8. ∀i:ℕk. (↑is-half-interval(b i;c i))
9. dim(a) = (dim(b) - 1) ∈ ℤ
10. i : ℕk
11. dim(c i) = 1 ∈ ℤ
12. ∀j:ℕk. ((¬(j = i ∈ ℤ))
⇒ ((a j) = (b j) ∈ ℚInterval))
13. (a i) = [fst((b i))] ∈ ℚInterval
14. ((fst((b i))) = (fst((c i))) ∈ ℚ) ∧ ((snd((b i))) = qavg(fst((c i));snd((c i))) ∈ ℚ)
⊢ ((∃!d:ℚCube(k). ((↑is-half-cube(k;a;d)) ∧ (∀i:ℕk. d i ≤ c i)))
∧ (∀b':ℚCube(k). ((↑is-half-cube(k;b';c))
⇒ (∀i:ℕk. a i ≤ b' i)
⇒ (b' = b ∈ ℚCube(k)))))
∨ ((∃!b':ℚCube(k). ((∀i:ℕk. a i ≤ b' i) ∧ (↑is-half-cube(k;b';c)) ∧ (¬(b' = b ∈ ℚCube(k)))))
∧ has-interior-point(k;a;c))
Latex:
Latex:
1. k : \mBbbN{}
2. a : \mBbbQ{}Cube(k)
3. b : \mBbbQ{}Cube(k)
4. c : \mBbbQ{}Cube(k)
5. \mforall{}i:\mBbbN{}k. (\muparrow{}Inhabited(a i))
6. 0 < dim(b)
7. 0 < dim(c)
8. \mforall{}i:\mBbbN{}k. a i \mleq{} b i
9. \mforall{}i:\mBbbN{}k. (\muparrow{}is-half-interval(b i;c i))
10. dim(a) = (dim(b) - 1)
11. i : \mBbbN{}k
12. dim(c i) = 1
13. \mforall{}j:\mBbbN{}k. ((\mneg{}(j = i)) {}\mRightarrow{} ((a j) = (b j)))
14. (a i) = [fst((b i))]
15. ((fst((b i))) = (fst((c i)))) \mwedge{} ((snd((b i))) = qavg(fst((c i));snd((c i))))
\mvdash{} ((\mexists{}!d:\mBbbQ{}Cube(k). ((\muparrow{}is-half-cube(k;a;d)) \mwedge{} (\mforall{}i:\mBbbN{}k. d i \mleq{} c i)))
\mwedge{} (\mforall{}b':\mBbbQ{}Cube(k). ((\muparrow{}is-half-cube(k;b';c)) {}\mRightarrow{} (\mforall{}i:\mBbbN{}k. a i \mleq{} b' i) {}\mRightarrow{} (b' = b))))
\mvee{} ((\mexists{}!b':\mBbbQ{}Cube(k). ((\mforall{}i:\mBbbN{}k. a i \mleq{} b' i) \mwedge{} (\muparrow{}is-half-cube(k;b';c)) \mwedge{} (\mneg{}(b' = b))))
\mwedge{} has-interior-point(k;a;c))
By
Latex:
Thin 7
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