def testTransitive(self):
th1 = Thm([A], Term.mk_equals(x, y))
th2 = Thm([B], Term.mk_equals(y, z))
self.assertEqual(Thm.transitive(th1, th2),
Thm([A, B], Term.mk_equals(x, z)))
def eval(self, thy, args, ths):
th = ths[0]
assert Term.is_equals(th.prop), "beta_conv_rhs"
rhs = th.prop.rhs
return Thm.transitive(th, Thm.beta_conv(rhs))