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FixedDivisor    --    compute (integer) fixed divisor for polynomial

Syntax

FixedDivisor(F: RINGELEM): RINGELEM

Description

This function returns the integer fixed divisor of the polynomial F; that is the gcd of all F(n) as n runs through all integers.

The polynomial F must have rational coefficients, and all values F(n) must be integers. Current bug: F must be univariate.

Example

/**/ use R ::= QQ[x]; /**/ f := (x-1)*(x-2)*(x-3); /**/ FixedDivisor(f); 3

See Also

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