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FirstNonZero

the first non-zero entry in a vector

Syntax
FirstNonZero(V:VECTOR):POLY

Description
***** NOT YET IMPLEMENTED *****

This function returns the first non-zero entry of V. If it is handed a zero vector then an error is signalled.

Example
  Use R ::= QQ[x,y,z];
  V := Vector(0, 0, x^2+yz, 0, z^2);
  FirstNonZero(V);
x^2 + yz
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See Also