Step
*
of Lemma
equipollent_functionality_wrt_equipollent3
∀[A,B1,B2:Type]. (B2 ~ B1
⇒ (B1 ~ A
⇐⇒ B2 ~ A))
BY
{ (Auto THEN RelRST THEN Auto) }
Latex:
Latex:
\mforall{}[A,B1,B2:Type]. (B2 \msim{} B1 {}\mRightarrow{} (B1 \msim{} A \mLeftarrow{}{}\mRightarrow{} B2 \msim{} A))
By
Latex:
(Auto THEN RelRST THEN Auto)
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