Ricky X. F. Chen

4 Questions 11 Answers 0 Followers

Questions related from Ricky X. F. Chen

A quick question: is every simplicial complex the ordered complex of some partially ordered set?

A quick question: Given a partially ordered set P, it is easy to associate a simplicial complex to it, called the ordered complex of P, which is essentially the family of chains of P. How about...

19 March 2016 3,246 7 View

A result on composition of integers, how to prove it directly?

Result: The number of compositions of 2n, say c_1+c_2+...c_k=2n, satisfy that Sum_(i=1..j) c_i

03 October 2015 3,912 5 View

A computation problem on expectation and variance?

Given a set of N objects and associate a non-negative integer value k_i to each object in the set. Consider the following computation problem: let k'_i

18 November 2014 4,566 3 View

The maximum number of cycles of the product of a given permutation and a n-cycle?

Given a permutation A on the set [n], is there a way to determine the maximum number of disjoint cycles of AC where C ranges over all n-cycles on [n]? For which class of permutations A, this...

28 September 2014 6,066 7 View