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Tagged with discrete-morse-theory discrete-geometry
2
questions
5
votes
1
answer
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Presentation of the Rybnikov matroid
In this well celebrated work Gregory Rybnikov exhibit an example of two arrangements with the same underlying matroid, but with fundamental groups which are not isomorphic. This is a key ...
2
votes
1
answer
169
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Complex lines arrangements from a given wiring diagram
I'm working on some presentation of the fundamental group of the complement of a complex lines arrangement in $\mathbb{C}^{2}.$ In particular, in Arvola's article
"The fundamental group of the ...