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Character formulas and descents for the hyperoctahedral group
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preprint, April 2015; revised, August 2015, 35 pages.
Power sum expansion of chromatic quasisymmetric functions,
Electronic Journal of
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A survey of subdivisions and local
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Edgewise subdivisions, local
h-polynomials and excedances in the wreath product
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SIAM Journal
on Discrete Mathematics 28 (2014), 1479-1492.
The absolute order of a permutation representation of
a Coxeter group
(with Y. Roichman),
Journal of Algebraic
Combinatorics 39 (2014), 75-98.
Flag subdivisions and γ-vectors,
Pacific
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The local h-vector of the cluster subdivision of a simplex
(with C. Savvidou),
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On the Möbius function of a lower Eulerian
Cohen-Macaulay poset,
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Cubical subdivisions and local h-vectors,
Annals of
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On the flag f-vector of a graded lattice with nontrivial
homology,
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Buchsbaum* complexes
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Welker),
Mathematische Zeitschrift 272 (2012), 131-149.
Functions of random walks on hyperplane
arrangements
(with P.
Diaconis),
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Some combinatorial properties of flag simplicial
pseudomanifolds and spheres,
Arkiv för
matematik 49 (2011), 17-29.
On the graph connectivity of skeleta of
convex polytopes,
in `Victor Klee Festschrift' (P. Gritzmann, B. Sturmfels and G.M.
Ziegler, eds.), Discrete
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The absolute order on the symmetric group,
constructible partially ordered sets and Cohen-Macaulay complexes
(with M. Kallipoliti),
Journal of Combinatorial Theory Series A 115 (2008), 1286-1295.
A combinatorial reciprocity theorem for hyperplane
arrangements,
Canadian Mathematical
Bulletin 53 (2010), 3-10.
Shellability and higher Cohen-Macaulay
connectivity of generalized cluster complexes
(with E.
Tzanaki),
Israel Journal of
Mathematics 167 (2008), 177-191.
h-Vectors
of generalized associahedra and noncrossing partitions
(with T. Brady,
J. McCammond and
C.
Watt),
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On some enumerative aspects of generalized
associahedra,
European Journal of Combinatorics 28 (2007), 1208-1215.
On the enumeration of positive cells in generalized
cluster complexes and Catalan hyperplane arrangements
(with E.
Tzanaki),
Journal
of Algebraic Combinatorics 23 (2006), 355-375.
Shellability of noncrossing partition lattices
(with T. Brady and
C.
Watt),
Proceedings of the American
Mathematical Society 135 (2007), 939-949.
h*-Vectors, Eulerian polynomials and stable
polytopes of graphs,
in `Stanley Festschrift' (B.E. Sagan, ed.),
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Ehrhart polynomials, simplicial polytopes,
magic squares and a conjecture of Stanley,
Journal für
die reine und angewandte Mathematik 583 (2005), 163-174.
Noncrossing partitions for the group
Dn (with
V. Reiner ),
SIAM Journal
on Discrete Mathematics 18 (2004), 397-417.
On a refinement of the generalized Catalan numbers
for Weyl groups,
Transactions of the American
Mathematical Society 357 (2005), 179-196.
Generalized Catalan numbers, Weyl groups and
arrangements of hyperplanes,
Bulletin of the London Mathematical Society 36 (2004), 294-302.
Decompositions and connectivity of matching and
chessboard complexes,
Discrete
and Computational Geometry 31 (2004), 395-403.
Monotone paths on zonotopes and oriented matroids
(with F. Santos),
Canadian Journal of Mathematics 53 (2001), 1121-1140.
On the topology of the Baues poset of polyhedral
subdivisions
(with F. Santos),
Topology 41 (2002), 423-433.
Zonotopal subdivisions of cyclic zonotopes,
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Projections of polytopes on the plane and the
generalized Baues problem,
Proceedings of the American
Mathematical Society 129 (2001), 2103-2109.
Monotone paths on polytopes
(with P.H.
Edelman and
V. Reiner ),
Mathematische Zeitschrift 235 (2000), 315-334.
Deformations of Coxeter hyperplane arrangements
and their characteristic polynomials,
in `Arrangements - Tokyo 1998' (M. Falk and H. Terao, eds.),
Advanced Studies in Pure Mathematics 27, Kinokuniya, Tokyo,
2000, pp. 1-26.
The generalized Baues problem for cyclic
polytopes II
(with J. Rambau and
F. Santos),
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Publ. De l'Institut
Mathematique (Belgrade) (N.S) 66(80) (1999), 3-15.
The largest intersection lattice of a discriminantal
arrangement,
Contributions to Algebra
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40 (1999), 283-289.
Fiber polytopes for the projections between
cyclic polytopes
(with J.A. De
Loera, V. Reiner
and F. Santos),
in `Combinatorics of Polytopes' (K. Fukuda and G.M. Ziegler, eds.),
European Journal of Combinatorics 21 (2000), 19-47.
On noncrossing and nonnesting partitions for
classical reflection groups,
Electronic Journal of
Combinatorics 5 (1998), Research Paper 42, 16pp (electronic).
Extended Linial hyperplane arrangements for
root systems and a conjecture of Postnikov and Stanley,
Journal
of Algebraic Combinatorics 10 (1999), 207-225.
A simple bijection for the regions of the Shi
arrangement of hyperplanes
(with S. Linusson),
Discrete
Mathematics 204 (1999), 27-39.
A class of labeled posets and the Shi arrangement
of hyperplanes,
Journal of Combinatorial Theory Series A 80 (1997), 158-162.
Piles of cubes, monotone path polytopes and
hyperplane arrangements,
Discrete
and Computational Geometry 21 (1999), 117-130.
On free deformations of the braid arrangement,
European Journal of Combinatorics 19 (1998), 7-18.
Characteristic polynomials of subspace arrangements
and finite fields,
Advances in Mathematics 122 (1996), 193-233.
On Hanlon's eigenvalue conjecture
(with R.M. Adin),
Journal of Combinatorial Theory Series A 73 (1996), 360-367.
Iterating the branching operation on a directed graph,
Journal
of Graph Theory 24 (1997), 257-265.
Spectra of some interesting combinatorial
matrices related to oriented spanning trees on a directed graph,
Journal of
Algebraic Combinatorics 5 (1996), 5-11.