Dear Forum, There seems to be some problem factoring rational polynomials using ALNUTH. Please glance through the following examples and let me know if I am doing something wrong, of if there is a problem with the package installation:
*1) gap> x := Indeterminate(Rationals,"x");;gap> pol := x^2-3;x^2-3gap> L := FieldByPolynomial(x^2-3);<algebraic extension over the Rationals of degree 2>gap> y := Indeterminate( L, "y" );;gap> FactorsPolynomialAlgExt(L,pol);* *Error, AL_EXECUTABLE, the executable for PARI/GP, has to be set called fromProcessPariGP( Concatenation( input ), "polyfactors.gp <http://polyfactors.gp>" ) called fromPolynomialFactorsDescriptionPari( H, coeffs ) called fromFactorsPolynomialPari( AlgExtEmbeddedPol( H, poly ) ) called from<function "FactorsPolynomialAlgExt">( <arguments> )called from read-eval loop at line 5 of *stdin*you can 'quit;' to quit to outer loop, oryou can 'return;' to continue* *2) gap> SplittingField(pol);<algebraic extension over the Rationals of degree 2>gap> x := Indeterminate(Rationals,"x"); xgap> pol := x^2 - 3;x^2-3gap> L := SplittingField(pol);<algebraic extension over the Rationals of degree 2>gap> FactorsPolynomialAlgExt(L,pol);Error, AL_EXECUTABLE, the executable for PARI/GP, has to be set called from ProcessPariGP( Concatenation( input ), "polyfactors.gp <http://polyfactors.gp>" ) called fromPolynomialFactorsDescriptionPari( H, coeffs ) called fromFactorsPolynomialPari( AlgExtEmbeddedPol( H, poly ) ) called from<function "FactorsPolynomialAlgExt">( <arguments> )called from read-eval loop at line 9 of *stdin*you can 'quit;' to quit to outer loop, oryou can 'return;' to continue* Sincerely, Kashyap -- Kashyap Rajeevsarathy Assistant Professor, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal - 462066, Madhya Pradesh, India. Phone: +91-755-669-2364 Website: https://home.iiserb.ac.in/~kashyap _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
