/* www-ATLAS of Group Representations. A7 represented as 14 x 14 matrices over GF(2). */ F:=GF(2); x:=CambridgeMatrix(1,F,14,[ "01000000000000", "00010000000000", "00000100000000", "10000000000000", "00000000100000", "00000000001000", "00000000000010", "00000000000001", "00100001101001", "11101001111001", "00100000000000", "10111100100100", "10000111110011", "00001101101000"]); y:=CambridgeMatrix(1,F,14,[ "00100000000000", "00001000000000", "00000010000000", "00000001000000", "00000000010000", "00000000000100", "10110000101110", "00010010110010", "11011000000101", "00010101000110", "01110100001101", "01000110000100", "00011110011110", "11011011110100"]); G:=MatrixGroup<14,F|x,y>; print "Group G is A7 < GL(14,GF(2))";