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IsZero

test whether an object is zero
Syntax 

IsZero(X:OBJECT):BOOL

Description
This function tests whether its argument is zero; the argument can be of almost any type for which zero makes sense.

Example 
  IsZero(23);
FALSE
-------------------------------
  IsZero(3-3);
TRUE
-------------------------------
  Use R ::= QQ[x,y];
  IsZero(x^2+3y-1);
FALSE
-------------------------------
  IsZero(Ideal(x^2,xy^3));
FALSE
-------------------------------
  IsZero(Vector(0,0,0));
TRUE
-------------------------------


See Also