Step * of Lemma iff_imp_equal_bool

[a,b:𝔹].  supposing ↑⇐⇒ ↑b
BY
(UnivCD THENA Auto) }

1
1. : 𝔹
2. : 𝔹
3. ↑⇐⇒ ↑b
⊢ b


Latex:


Latex:
\mforall{}[a,b:\mBbbB{}].    a  =  b  supposing  \muparrow{}a  \mLeftarrow{}{}\mRightarrow{}  \muparrow{}b


By


Latex:
(UnivCD  THENA  Auto)




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