define statement of axiom prime s four as system prime s infer all metavar var a end metavar indeed all metavar var b end metavar indeed ( ( metavar var a end metavar peano succ peano is ( metavar var b end metavar peano succ ) ) peano imply ( metavar var a end metavar peano is metavar var b end metavar ) ) end define
define proof of axiom prime s four as rule tactic end define
The pyk compiler, version 0.grue.20050603 by Klaus Grue,