Step * of Lemma Euclid-Prop31

No Annotations
e:EuclideanPlane. ∀a,b,x:Point.  (a  ab  (∃y:Point. geo-parallel-points(e;a;b;x;y)))
BY
(Auto
   THEN (InstLemma `Euclid-drop-perp-0` [⌜e⌝;⌜a⌝;⌜b⌝;⌜x⌝]⋅ THENA Auto)
   THEN -1
   THEN RenameVar `z' (-2)
   THEN -1
   THEN RenameVar `u' (-2)
   THEN (InstLemma `Euclid-erect-perp` [⌜e⌝;⌜z⌝;⌜x⌝;⌜x⌝]⋅ THENA Auto)
   THEN -1
   THEN RenameVar `q' (-2)) }

1
1. EuclideanPlane
2. Point
3. Point
4. Point
5. b
6. ab
7. Point
8. Point
9. [%9] Colinear(u;z;x) ∧ ab  ⊥uz ∧ ab ∧ x
10. Point
11. [%16] zx  ⊥qx ∧ zx
⊢ ∃y:Point. geo-parallel-points(e;a;b;x;y)


Latex:


Latex:
No  Annotations
\mforall{}e:EuclideanPlane.  \mforall{}a,b,x:Point.    (a  \#  b  {}\mRightarrow{}  x  \#  ab  {}\mRightarrow{}  (\mexists{}y:Point.  geo-parallel-points(e;a;b;x;y)))


By


Latex:
(Auto
  THEN  (InstLemma  `Euclid-drop-perp-0`  [\mkleeneopen{}e\mkleeneclose{};\mkleeneopen{}a\mkleeneclose{};\mkleeneopen{}b\mkleeneclose{};\mkleeneopen{}x\mkleeneclose{}]\mcdot{}  THENA  Auto)
  THEN  D  -1
  THEN  RenameVar  `z'  (-2)
  THEN  D  -1
  THEN  RenameVar  `u'  (-2)
  THEN  (InstLemma  `Euclid-erect-perp`  [\mkleeneopen{}e\mkleeneclose{};\mkleeneopen{}z\mkleeneclose{};\mkleeneopen{}x\mkleeneclose{};\mkleeneopen{}x\mkleeneclose{}]\mcdot{}  THENA  Auto)
  THEN  D  -1
  THEN  RenameVar  `q'  (-2))




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