4 citations · 13 across the 15 of their papers we have counts for
5 papers · 1 filter
On rearrangement inequalities for multiple sequences
Chai Wah Wu
The classical rearrangement inequality provides bounds for the sum of products of two sequences under permutations of terms and show that similarly ordered sequences provide the la…
Sums of products of binomial coefficients mod 2 and run length transforms of sequences
Chai Wah Wu
We study properties of functions of binomial coefficients mod 2 and derive a set of recurrence relations for sums of products of binomial coefficients mod 2. We show that they resu…
Minimal number of points on a grid forming line segments of equal length
Chai Wah Wu
We consider the minimal number of points on a regular grid on the plane that generates line segments of points of exactly length . We illustrate how this is related to the $…
Counting the number of isosceles triangles in rectangular regular grids
Chai Wah Wu
In general graph theory, the only relationship between vertices are expressed via the edges. When the vertices are embedded in an Euclidean space, the geometric relationships betwe…
Permutations such that is maximized or minimized
Chai Wah Wu
We consider the problem of finding the set of permutations of such that is maximized or minimized. While the set of per…