/* www-ATLAS of Group Representations. 2.L3(4) represented as 20 x 20 matrices over GF(5). */ F:=GF(5); x:=CambridgeMatrix(1,F,20,[ "01000000000000000000", "10000000000000000000", "00010000000000000000", "00100000000000000000", "00000010000000000000", "00000001000000000000", "00001000000000000000", "00000100000000000000", "00000000000100000000", "00000000010000000000", "00000000000000100000", "00000000100000000000", "00000000000010000000", "14411040400101000000", "00000000001000000000", "00000000000000000100", "41004114001000401000", "00000000000000010000", "00000000000000000001", "00000000000000000010"]); y:=CambridgeMatrix(1,F,20,[ "01000000000000000000", "00100000000000000000", "00001000000000000000", "00000100000000000000", "10000000000000000000", "00000000100000000000", "00000000010000000000", "00000000001000000000", "00000000000010000000", "00000000000001000000", "00000000000000010000", "00000000000000001000", "00010000000000000000", "40140400000404004000", "43400040000101401000", "00000000000000000010", "14411040400101000000", "00000000000000000400", "00000001000000000000", "44040440040000000004"]); G:=MatrixGroup<20,F|x,y>; print "Group G is 2.L3(4) < GL(20,GF(5))";