Let B={1,2,3.....m), let R be a relation on B and its antisymmetric
a) What is the biggest number of ordered pairs that can be in R?
b)How many antisymmetric relations on A have the size found in a) ??
Printable View
Let B={1,2,3.....m), let R be a relation on B and its antisymmetric
a) What is the biggest number of ordered pairs that can be in R?
b)How many antisymmetric relations on A have the size found in a) ??
(a)Since the matrix representation M of R can be a upper triangle matrix, it has the bigggest oder.
(b)Since the element in the diagonal of M should be 1, Thus there aredistinct antisymmetric relations on B having the size found in (a)
The same problem was also considered here. If you have difficulties, I suggest starting with writing some examples of such relations with the maximum number of pairs for small.