Step
*
1
1
1
2
of Lemma
left-convex2
1. g : EuclideanPlane
2. a : Point
3. b : Point
4. x : Point
5. y : Point
6. x leftof ab
7. a_y_x ∧ y ≠ a
8. a leftof bx
9. b leftof xa
10. x # ab
⊢ y leftof ab
BY
{ (InstLemma `colinear-lsep` [⌜g⌝;⌜x⌝;⌜a⌝;⌜b⌝;⌜y⌝]⋅ THENA Auto) }
1
1. g : EuclideanPlane
2. a : Point
3. b : Point
4. x : Point
5. y : Point
6. x leftof ab
7. a_y_x ∧ y ≠ a
8. a leftof bx
9. b leftof xa
10. x # ab
11. y # ab
⊢ y leftof ab
Latex:
Latex:
1. g : EuclideanPlane
2. a : Point
3. b : Point
4. x : Point
5. y : Point
6. x leftof ab
7. a\_y\_x \mwedge{} y \mneq{} a
8. a leftof bx
9. b leftof xa
10. x \# ab
\mvdash{} y leftof ab
By
Latex:
(InstLemma `colinear-lsep` [\mkleeneopen{}g\mkleeneclose{};\mkleeneopen{}x\mkleeneclose{};\mkleeneopen{}a\mkleeneclose{};\mkleeneopen{}b\mkleeneclose{};\mkleeneopen{}y\mkleeneclose{}]\mcdot{} THENA Auto)
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