Step
*
of Lemma
bdd-diff_transitivity
∀a,b,c:ℕ+ ⟶ ℤ.  (bdd-diff(a;b) 
⇒ bdd-diff(b;c) 
⇒ bdd-diff(a;c))
BY
{ ((InstLemma `bdd-diff-equiv` [] THEN D 1) THEN Auto)⋅ }
Latex:
Latex:
\mforall{}a,b,c:\mBbbN{}\msupplus{}  {}\mrightarrow{}  \mBbbZ{}.    (bdd-diff(a;b)  {}\mRightarrow{}  bdd-diff(b;c)  {}\mRightarrow{}  bdd-diff(a;c))
By
Latex:
((InstLemma  `bdd-diff-equiv`  []  THEN  D  1)  THEN  Auto)\mcdot{}
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