GAP4, Version: 4r2 of 29-Feb-2000, i686-pc-linux-gnu-gcc gap> R := Integers mod 9; (Integers mod 9) gap> S := FullMatrixAlgebra(R,2); ( (Integers mod 9)^[ 2, 2 ] ) gap> Units(S); Segmentation fault Maybe I need a patch?All the best,
George
And I have installed all 8 bugfixes, but I have:
GAP4, Version: 4r2 fix8 of 7-June-2001, i686-pc-cygwin-gcc
Components: small, small2, small3, small4, small5, small6, small7,
small8, id2, id3, id4, id5, id6, trans, prim, tbl,
tom installed.
gap> LogTo("bug.txt");
gap> R:=Integers mod 9;
(Integers mod 9)
gap> S:=FullMatrixAlgebra(R,2);
( (Integers mod 9)^[ 2, 2 ] )
gap> Units(S);
Error, no method found! For debugging hints type ?Recovery from NoMethodFound
Error no 1st choice method found for `PROD' on 2 arguments at
Error( no_method_found );
<compiled or corrupted call value> called from
IsUnit( R, elm ) 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
Sincerely yours, Alexander B. Konovalov Ph.D., Associate Professor, Algebra & Geometry Chair Department of Mathematics & Economy Cybernetics Zaporozhye State University, Zaporozhye, Ukraine ------------------------------------------------ Phone: (38-0612) 137510, 137415, 643712 Fax : (38-0612) 137510, 137415 Mailing address: P.O.Box 1317, Central Post Office, Zaporozhye, 69000, Ukraine E-mail: algebra@hotmail.zp.ua, konovalov@member.ams.org http://www.zsu.zp.ua/ppages/konoval/konoval.htm ICQ # 89015377