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Results tagged with co.combinatorics
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user 21095
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
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votes
1
answer
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Realizability of extensions of a free oriented matroid by an independent set
Question:
I am searching for a non-realizable matroid with few dependencies relative to the number of points. Precisely, I would like to find a non-realizable (over $\mathbb{R}$) oriented matroid $M$ …
- 6,210