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Results tagged with co.combinatorics
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user 41219
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
2
votes
3
answers
3k
views
Counting graphs up to isomorphism
I apologize if the questions are too elementary for the forum, but I am not an expert in this fields.
How many (rooted or unrooted) binary trees with $n$ vertices are there up to isomorphism?
How …
- 828
9
votes
1
answer
424
views
Hamiltonian circuit
Let us consider a disk with one labelled point on the boundary and $n$ labelled points in the interior.
Let T be a triangulation of the whole disk with vertices on the labelled points such that T con …
- 828