/* www-ATLAS of Group Representations. 2.J2.2 represented as 14 x 14 matrices over GF(25). */ F:=GF(25); x:=CambridgeMatrix(3,F,14,\[ 0,4,0,0,0,0,0,0,0,0,0,0,0,0, 1,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,4,0,0,0,0,0,0,0,0,0,0, 0,0,1,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,4,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,4,0,0,0,0,0, 0,0,0,0,1,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,4,0,0, 0,0,0,0,0,1,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,4, 13,23,21,13,6,2,13,6,6,12,19,15,21,10, 0,0,0,0,0,0,0,1,0,0,0,0,0,0, 2,0,13,9,7,12,12,13,10,7,23,10,11,7, 0,0,0,0,0,0,0,0,0,1,0,0,0,0]); y:=CambridgeMatrix(3,F,14,\[ 0,0,1,0,0,0,0,0,0,0,0,0,0,0, 3,4,4,0,0,0,0,0,0,0,0,0,0,0, 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, 0,0,0,0,0,0,0,1,0,0,0,0,0,0, 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, 2,3,1,0,4,0,0,1,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,1,0, 16,5,16,8,17,4,10,1,14,24,15,0,16,0, 22,12,8,18,6,8,24,12,12,9,7,0,18,0, 24,3,19,11,16,19,7,3,0,0,23,1,0,0, 1,12,15,2,10,4,11,17,0,4,19,0,1,0, 9,6,2,11,24,8,6,24,23,11,24,0,7,1]); G:=MatrixGroup<14,F|x,y>; print "Group G is 2.J2.2 < GL(14,GF(25))";