Dear All, I am doing following calculation and I need square root of cyclotomic number being real number. Here is example below. Is there any workaround for this ? What I am doing I obtained vector v of complex number which not unit length. In order to normalize it I perform following and I receive the error. Do I need more knowledge about cyclotomic numbers ?
gap> v1:=v/Sqrt(v*ComplexConjugate(v)); Error, no method found! For debugging hints type ?Recovery from NoMethodFound Error, no 1st choice method found for `Sqrt' on 1 arguments called from <function "HANDLE_METHOD_NOT_FOUND">( <arguments> ) (...) gap> n:=E(20)-E(20)^9; E(20)-E(20)^9 gap> RealPart(n); E(20)-E(20)^9 gap> Sqrt(n); Error, no method found! For debugging hints type ?Recovery from NoMethodFound Error, no 1st choice method found for `Sqrt' on 1 arguments called from Regards, Marek _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
