[GAP Forum] RowSpace: Gap3 vs Gap4

[Sven Reichard]

Ariel,

you can use VectorSpace, as in the example below. The documentation for 
GAP4 can be found at
http://www.gap-system.org/Doc/doc.html

Regards,
Sven.

gap> V1 := VectorSpace(Rationals, [[1,0],[0,1]]);
<vector space over Rationals, with 2 generators>
gap> V2 := VectorSpace(Rationals, [[1,0],[1,1]]);
<vector space over Rationals, with 2 generators>
gap> V1 = V2;
true
--
Sven Reichard
School of Mathematics and Statistics
University of Western Australia

Ariel Molina Rueda wrote:
> Hi, 
> 
> Im using GAP GAP4, 4.4.7, i need to use RowSpace but i dotn know how to
> use it and:
> 
> gap> ?RowSpace
> Help: no matching entry found
> Help: 'RowSpace' is currently undocumented.
>       For details, try ?Undocumented Variables
> 
> 
> so i found this: http://schmidt.nuigalway.ie/gap/CHAP033.htm
> but even some of those examples give me errors.
> 
> All i need to do is to compare two matrices, by comparing what they
> generate.
> 
> Is there a GAP4 documentation somewhere? Google only gives GAP v3 docs
> 
> gap> RowSpace(Rationals, MatTom(TableOfMarks(SmallGroup(16,3))));
> Error, usage: FullRowModule( <R>, <n> ) for ring <R> called from
> <function>( <arguments> ) called from read-eval-loop
> Entering break read-eval-print loop ...
> you can 'quit;' to quit to outer loop, or
> you can 'return;' to continue
> 
> 
> Thanks in advance!
> 
> ---------
> GAP4, Version: 4.4.7 of 17-Mar-2006, i686-pc-linux-gnu-gcc
> Components:  small 2.1, small2 2.0, small3 2.0, small4 1.0, small5 1.0,
> small6 1.0, small7 1.0, small8 1.0, small9 1.0, small10 0.2, id2 3.0,
> id3 2.1, id4 1.0, id5 1.0, id6 1.0,
>              id9 1.0, id10 0.1, trans 1.0, prim 2.1  loaded.
> Packages:    TomLib 1.1.2  loaded.
> 
> 
> _______________________________________________
> Forum mailing list
> Forum at mail.gap-system.org
> http://mail.gap-system.org/mailman/listinfo/forum
> 
> 
>