partitioning.clf revision dd2cdefff2e823963cde6ec1fb9c28af1b137865
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc(cl-comment 'A line is incident with a unique plane.')
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc(forall (x y z)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (if (and (line x)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc(cl-comment 'A line is incident with at most two points.')
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc(forall (x y z w)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (if (and (line x)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (or (= w z)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (if (line x)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (exists (y z)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (and (point y)
dd2cdefff2e823963cde6ec1fb9c28af1b137865Karl Luc (in z x)))))