logic : Math Help


One's Mother is one's Female parent

logic
Updated January 22, 2019 08:20 AM

What is the negation of the implication statement

logic
Updated January 21, 2019 15:20 PM

Why is the "axiom of extension" an axiom?

logic set-theory
Updated January 21, 2019 09:20 AM




What does $\forall x \phi \rightarrow \psi$ mean?

logic
Updated January 20, 2019 19:20 PM




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