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Step * 1 of Lemma sqle_wf_base


1. a : Base
2. b : Base
⊢ a ≤ b ∈ ℙ
BY
{ (Unfolds ``member prop`` 0 THEN Refine_sqleIntensionalEquality THEN Auto) }

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Latex:

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Latex:

1.  a  :  Base
2.  b  :  Base
\mvdash{}  a  \mleq{}  b  \mmember{}  \mBbbP{}


By

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Latex:
(Unfolds  ``member  prop``  0  THEN  Refine\_sqleIntensionalEquality  THEN  Auto)

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