Hello I defined a function 'pair' as:
pair:=function(x,y) return[x,y]; end; Also I defined a:=[1,2,3,4]; And discovered something strange: Although the output of ListX(Combinations(a,2),Combinations(a,2),\<,pair); is > [ [ [ 1, 2 ], [ 1, 3 ] ], [ [ 1, 2 ], [ 1, 4 ] ], [ [ 1, 2 ], [ 2, 3 ] ], [ [ > 1, 2 ], [ 2, 4 ] ], > [ [ 1, 2 ], [ 3, 4 ] ], [ [ 1, 3 ], [ 1, 4 ] ], [ [ 1, 3 ], [ 2, 3 ] ], [ [ > 1, 3 ], [ 2, 4 ] ], > [ [ 1, 3 ], [ 3, 4 ] ], [ [ 1, 4 ], [ 2, 3 ] ], [ [ 1, 4 ], [ 2, 4 ] ], [ [ > 1, 4 ], [ 3, 4 ] ], > [ [ 2, 3 ], [ 2, 4 ] ], [ [ 2, 3 ], [ 3, 4 ] ], [ [ 2, 4 ], [ 3, 4 ] ] ] > (as it should be) the output of ListX(Combinations(a,2),Combinations(a,2),\>,pair); > is: > Variable: '>' must have a value > Why is that? > > Lisette > > _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
