---

Step * 9 1 of Lemma r2-basic-geo-axioms


∀a,b,c,d:ℝ^2.  (a_b_d ⇒ b_c_d ⇒ a_b_c)
BY
{ (InstLemma `rv-be-inner-trans` []⋅ THENM Trivial) }

---

Latex:

---

Latex:

\mforall{}a,b,c,d:\mBbbR{}\^{}2.    (a\_b\_d  {}\mRightarrow{}  b\_c\_d  {}\mRightarrow{}  a\_b\_c)


By

---

Latex:
(InstLemma  `rv-be-inner-trans`  []\mcdot{}  THENM  Trivial)

---

Home Index