4 citations · 13 across the 15 of their papers we have counts for
4 papers · 1 filter
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…
Meertens number and its variations
Chai Wah Wu
In 1998, Bird introduced Meertens numbers as numbers that are invariant under a map similar to the Godel encoding. In base 10, the only known Meertens number is 81312000. We look a…