Step
*
of Lemma
upper_subtype_upper
∀[m1,m2:ℤ].  {m1...} ⊆r {m2...} supposing m2 ≤ m1
BY
{ xxxAutoxxx }
Latex:
Latex:
\mforall{}[m1,m2:\mBbbZ{}].    \{m1...\}  \msubseteq{}r  \{m2...\}  supposing  m2  \mleq{}  m1
By
Latex:
xxxAutoxxx
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