[GAP Forum] RowSpace: Gap3 vs Gap4

[Ariel Molina Rueda]

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.