/* www-ATLAS of Group Representations. M12:2 represented as 20 x 20 matrices over GF(3). */ F:=GF(3); x:=CambridgeMatrix(1,F,20,[ "01000000000000000000", "10000000000000000000", "00010000000000000000", "00100000000000000000", "00000100000000000000", "00001000000000000000", "00000000100000000000", "00000000010000000000", "00000010000000000000", "00000001000000000000", "00000000000010000000", "00000000000001000000", "00000000001000000000", "00000000000100000000", "00000000000000010000", "00000000000000100000", "00000000000000000100", "00000000000000001000", "00000000000000000001", "00000000000000000010"]); y:=CambridgeMatrix(1,F,20,[ "11000000000000000000", "00100000000000000000", "02200000000000000000", "00001000000000000000", "00000010000000000000", "00000001000000000000", "00010000000000000000", "00000000001000000000", "00000000000100000000", "01222020011200000000", "00000100000000000000", "00000101201200000000", "00000000000000100000", "00212000001221100000", "00000000000000001000", "01000002102100010000", "00000000000010000000", "00000000000000000010", "01021222020212020220", "00100201000000000001"]); G:=MatrixGroup<20,F|x,y>; print "Group G is M12:2 < GL(20,GF(3))";