/* www-ATLAS of Group Representations. 2A5 represented as 2 x 2 matrices over GF(5). */ F:=GF(5); x:=CambridgeMatrix(1,F,2,[ "04", "10"]); y:=CambridgeMatrix(1,F,2,[ "01", "44"]); G:=MatrixGroup<2,F|x,y>; print "Group G is 2A5 < GL(2,GF(5))";