Mathematical Logic First-order or predicate logic. Problems about formal deductions. Show that ⊢(∀x((¬Px)→Qx)→∀y((¬Qy)→Py)) Please be as clear as possible. Show and explain all the steps of the proof. Thank you.

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Mathematical Logic

First-order or predicate logic.

Problems about formal deductions.

Show that
⊢(∀x((¬Px)→Qx)→∀y((¬Qy)→Py))

Please be as clear as possible. Show and explain all the steps of the proof. Thank you.

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