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Step * of Lemma is-interface-conditional-implies

∀[Info:Type]. ∀es:EO+(Info). ∀X,Y:EClass(Top). ∀e:E.  (↑e ∈b X) ∨ (↑e ∈b Y) supposing ↑e ∈b [X?Y]
BY
{ Auto
THEN Try (BLemma `is-interface-conditional` THEN Auto) }

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Latex:

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Latex:
\mforall{}[Info:Type].  \mforall{}es:EO+(Info).  \mforall{}X,Y:EClass(Top).  \mforall{}e:E.    (\muparrow{}e  \mmember{}\msubb{}  X)  \mvee{}  (\muparrow{}e  \mmember{}\msubb{}  Y)  supposing  \muparrow{}e  \mmember{}\msubb{}  [X?Y]


By

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Latex:
Auto
THEN  Try  (BLemma  `is-interface-conditional`  THEN  Auto)

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