/* www-ATLAS of Group Representations. 3.S7 represented as 12 x 12 matrices over GF(5). */ F:=GF(5); x:=CambridgeMatrix(1,F,12,[ "010000000000", "100000000000", "000100000000", "001000000000", "000000100000", "000000001000", "000010000000", "000000000001", "000001000000", "001141401040", "001141401400", "000000010000"]); y:=CambridgeMatrix(1,F,12,[ "001000000000", "044000000000", "000010000000", "000001000000", "000000010000", "000000000100", "000000000010", "323241103331", "004404100004", "121304234413", "121304340013", "323223341011"]); G:=MatrixGroup<12,F|x,y>; print "Group G is 3.S7 < GL(12,GF(5))";