14 citations · 18 across the 5 of their papers we have counts for
5 papers
Restricted non-separable planar maps and some pattern avoiding permutations
Sergey Kitaev, Pavel Salimov, Christopher Severs +1
Tutte founded the theory of enumeration of planar maps in a series of papers in the 1960s. Rooted non-separable planar maps are in bijection with West-2-stack-sortable permutations…
On the Representability of Line Graphs
Sergey Kitaev, Pavel Salimov, Christopher Severs +1
A graph G=(V,E) is representable if there exists a word W over the alphabet V such that letters x and y alternate in W if and only if (x,y) is in E for each x not equal to y. The m…
On the Homology of the Real Complement of the -Parabolic Subspace Arrangement
Christopher Severs, Jacob A. White
In this paper, we study -parabolic arrangements, a generalization of the -equal arrangement for any finite real reflection group. When , these arrangements correspond to…
The Discrete Fundamental Group of the Associahedron, and the Exchange Module
Hélène Barcelo, Christopher Severs, Jacob A. White
The associahedron is an object that has been well studied and has numerous applications, particularly in the theory of operads, the study of non-crossing partitions, lattice theory…
-Parabolic Subspace Arrangements
Hélène Barcelo, Christopher Severs, Jacob A. White
In this paper, we study -parabolic arrangements, a generalization of -equal arrangements for finite real reflection groups. When , these arrangements correspond to the w…