ITs about First order logic

Ifuwannabepretty

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Joined
Oct 21, 2021
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Problem : Show that L = {∃xPx, ¬Pvo, ¬Pv1.. } is satisfiable
I change That by
{ ¬(∀x) ¬Px , (∀y) ¬Py }
and by Principle of excluded middle It is not satisfiable
I wonder this have Error some where..
 
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