CASA Function: projPoint
Check for a valid point in projective space.
Calling Sequence:
- b := type(point,projPoint)
Parameters:
- point : list
-
Result:
- b : boolean
-
Description:
- This function checks whether point is a valid point in a projective space, i.e. whether at least one coordinate is different from zero.
Examples:
> a := RootOf(x^3-2):
> type([1,0,0,a], projPoint);
> type([0,0,0,a^3-2], projPoint);
See Also:
[CASA]
[pointInAlgSet]