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5. (a) Show that, if A is a formula containing and V as its only connectives, then v(A) = T for every assignment v

5. (a) Show that, if A is a formula containing and V as its only connectives, then v(A) = T for every assignment v which assigns T to every atom. (b) Deduce that the set of connectives {, V} cannot generate all Boolean operators.

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