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Step * of Lemma sequence_subtype

∀[A,B:Type].  sequence(A) ⊆r sequence(B) supposing A ⊆r B
BY
{ (Unfold `sequence` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[A,B:Type].    sequence(A)  \msubseteq{}r  sequence(B)  supposing  A  \msubseteq{}r  B


By

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Latex:
(Unfold  `sequence`  0  THEN  Auto)

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