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Step * of Lemma psub-same

∀a:formula(). (a ⊆ a ⇐⇒ True)
BY
{ (Auto THEN BLemma `psub_weakening` THEN Auto) }

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Latex:

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Latex:
\mforall{}a:formula().  (a  \msubseteq{}  a  \mLeftarrow{}{}\mRightarrow{}  True)


By

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Latex:
(Auto  THEN  BLemma  `psub\_weakening`  THEN  Auto)

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