Skolemization / FOL to CNF P. Q. R are predicates; x, y, z, w, v are variables;

Skolemization / FOL to CNF

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P. Q. R are predicates; x, y, z, w, v are variables; a and b are constants; and s is a unary funetion symbol. For each item below, write the result obtained by Skolemization and removing the universal quantifiers. (a) SxSy(Q(x) v Q(y) (b) $x"y$zP(x, y, z) (c) SxR(x) Ú Sx-R(x) (d) $xP(a, x) (e) SxQ(x) Picture in case the above does not render correctly: (a) 3x3y(Q(x) v Qy)) (b) 3xVy3zP(x, y, z) (c) ExR(x) v 3x R(x) (d) 3xP(a, x) (e) Ex0x) P. Q. R are predicates; x, y, z, w, v are variables; a and b are constants; and s is a unary funetion symbol. For each item below, write the result obtained by Skolemization and removing the universal quantifiers. (a) SxSy(Q(x) v Q(y) (b) $x"y$zP(x, y, z) (c) SxR(x) Ú Sx-R(x) (d) $xP(a, x) (e) SxQ(x) Picture in case the above does not render correctly: (a) 3x3y(Q(x) v Qy)) (b) 3xVy3zP(x, y, z) (c) ExR(x) v 3x R(x) (d) 3xP(a, x) (e) Ex0x)

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Boilerplate abounds in programs that manipulate syntax trees Consider a function transforming a particular kind of leaf node With a typical tree data ... View the full answer