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Hi, I don't know how to prove ((Ǝx) F(x) →(Ǝx) (G(x)) with conditional proof from:
((Ǝx) F(x) → (∀z) H(z))
H(a) →G(b)
Thanks
((Ǝx) F(x) → (∀z) H(z))
H(a) →G(b)
Thanks