inert normal function
expression involving RootOfs
The Normal function is a placeholder for representing a normal form for an expression. It is used in conjunction with mod and evala as described below which defines the coefficient domain.
The call Normal(a) mod p computes a normal form for a where a is a rational expression over a finite field.
The call evala(Normal(a)) computes a normal form for a where a may contain algebraic coefficients defined by RootOfs or radicals. See evala,Normal for more information.
Normal( (x^3-2*x^2+2*x+1)/(x^4+1) ) mod 5;
evala(Normal( (x^2-2)/(x-RootOf(_Z^2-2)) ));
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