Dear Jianrong, On 04.01.2013, at 10:10, 李建荣 wrote:
> Dear Forum, > > Let v be a vector and V a vector space. Is there some function in GAP which > can determine that v is in V or not? I search the manual of GAP but did not > find one. Thank you very much. If a is a vector and V a vectorspace, you can simply write a in V to get a boolean true/false value indicating what you want. For example: gap> V:=VectorSpace(GF(3), [ [1,0,0,0], [0,1,0,1], [1,-1,0,0] ] * Z(3)^0); <vector space over GF(3), with 3 generators> gap> [1,0,0,1] * Z(3)^0 in V; true gap> [1,0,1,0] * Z(3)^0 in V; false Hope that helps, Max _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
