NEG-AND-PLAN-TAC : TACTIC

NEG-AND-PLAN-TAC is a tactic.
As defined for use ETREE-NAT: is a primitive tactic.
If planned line is a negated conjunction, applies indirect proof,
assuming negated planned line with new goal of falsehood.

TPS documentation homepage


© 1988-99, Carnegie Mellon University.

TPS homepage