/* www-ATLAS of Group Representations. J2 represented as 14 x 14 matrices over GF(49). */ F:=GF(49); x:=CambridgeMatrix(3,F,14,\[ 0,1,0,0,0,0,0,0,0,0,0,0,0,0, 1,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,1,0,0,0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,1,0,0,0,0,0,0,0,0, 0,0,0,0,1,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,1,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,1,0,0,0,0, 0,0,0,0,0,0,1,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,1,0,0,0,0,0,0, 47,9,47,9,8,48,1,32,6,24,1,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,1,0, 0,0,0,0,0,0,0,0,0,0,0,1,0,0, 25,31,41,15,43,13,5,14,2,35,0,31,25,1]); y:=CambridgeMatrix(3,F,14,\[ 5,6,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0,0,0,0,0,0,0, 5,3,2,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,1,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,1,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,1,0,0,0,0,0,0, 0,0,0,1,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,1,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,1,0,0, 6,2,1,0,6,0,0,1,6,0,0,0,0,0, 0,0,0,0,0,1,0,0,0,0,0,0,0,0, 6,5,5,6,0,1,0,0,0,6,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,1, 45,35,41,23,32,45,32,36,9,47,36,9,6,6]); G:=MatrixGroup<14,F|x,y>; print "Group G is J2 < GL(14,GF(49))";