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IsZero |
Syntax |
IsZero(X:OBJECT):BOOL |
Summary |
test whether an object is zero |
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 ::= Q[x,y]; IsZero(x^2+3y-1); FALSE ------------------------------- IsZero(Ideal(x^2,xy^3)); FALSE ------------------------------- IsZero(Vector(0,0,0)); TRUE ------------------------------- |
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