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Step * of Lemma member-has-value

∀[a:Base]. Ax ∈ (a)↓ supposing (a)↓
BY
{ (Auto THEN Unfold `has-value` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a:Base].  Ax  \mmember{}  (a)\mdownarrow{}  supposing  (a)\mdownarrow{}


By

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Latex:
(Auto  THEN  Unfold  `has-value`  0  THEN  Auto)

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