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Compute p-th root
PthRoot(X: RINGELEM): RINGELEM |
This function returns the p-th root of a polynomial over a finite
field. If no p-th root exists then an error is signalled. p is
the characteristic of the field.
/**/ use R ::= ZZ/(7)[x,y];
/**/ F := x^7-y^14+3;
/**/ PthRoot(F);
-y^2+x+3
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