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Results tagged with co.combinatorics
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user 51579
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
3
votes
1
answer
348
views
Generating function for numbers divisible by some primes
Consider the first $k$ primes $p_1 = 2, p_2 = 3, \dots, p_k$. Let $A_k$ be the set of numbers that are divisible by at least one $p_i$. We can represent this set as a generating function:
$$G_k(x) = …
- 343
5
votes
2
answers
619
views
Average vertex degree in finite Delaunay triangulations in high dimensions
In $\mathbb{R}^2$ it's known that with a "random" point configuration, the average degree of a vertex in its Delaunay triangulation is 6.
Does anyone know of a similar result in higher dimension? I …
- 343