/* www-ATLAS of Group Representations. S7 represented as 20 x 20 matrices over GF(5). */ F:=GF(5); x:=CambridgeMatrix(1,F,20,[ "01000000000000000000", "10000000000000000000", "30440000000000000000", "23010000000000000000", "00000010000000000000", "00000000100000000000", "00001000000000000000", "00000000000100000000", "00000100000000000000", "00000000000000100000", "00000000000000001000", "00000001000000000000", "31012422410240100000", "10030104100404000000", "00000000010000000000", "14010004010400140000", "00000000001000000000", "04124212441204104100", "23431321410114300010", "34444041113210302001"]); y:=CambridgeMatrix(1,F,20,[ "00100000000000000000", "00010000000000000000", "00001000000000000000", "00000100000000000000", "00000001000000000000", "00000000010000000000", "00000000001000000000", "00000000000010000000", "00000000000001000000", "00000000000000010000", "00000000000000000100", "14134303000124110000", "41323030240221344000", "32213032143443230000", "13022304023213310000", "14221320110314223000", "42210423420340230000", "00000000000000000010", "00000000000000000001", "03432444414142301444"]); G:=MatrixGroup<20,F|x,y>; print "Group G is S7 < GL(20,GF(5))";