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Step * of Lemma polymorphic-constant-bool

∀f:⋂A:Type. (A ⟶ 𝔹). ∃t:𝔹. ∀A:Type. ∀x:A.  f x = t
BY
{ xxx(Auto THEN BLemma `polymorphic-constant` THEN Auto)xxx }

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Latex:

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Latex:
\mforall{}f:\mcap{}A:Type.  (A  {}\mrightarrow{}  \mBbbB{}).  \mexists{}t:\mBbbB{}.  \mforall{}A:Type.  \mforall{}x:A.    f  x  =  t


By

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Latex:
xxx(Auto  THEN  BLemma  `polymorphic-constant`  THEN  Auto)xxx

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