/* www-ATLAS of Group Representations. A5 represented as 4 x 4 matrices over GF(2). */ F:=GF(2); x:=CambridgeMatrix(1,F,4,[ "1000", "0010", "0100", "1111"]); y:=CambridgeMatrix(1,F,4,[ "0100", "0001", "0010", "1000"]); G:=MatrixGroup<4,F|x,y>; print "Group G is A5 < GL(4,GF(2))";