Preprint versions, pdf files
Filtered
geometric lattices and Lefschetz section theorems over the
tropical semiring
(with K. Adiprasato), preprint 2014 (28 pp).
(Also at http://arxiv.org/abs/1401.7301 )
A
cell complex in number theory
Preprint 2009 (16 pp)
Advances in Appl. Math. 46 (2011), 71--85.
(Also at http://arXiv.org/abs/1101.5704 )
On sequentially Cohen-Macaulay complexes and posets (with M. Wachs and V. Welker)
Preprint 2007 (19 pp)
Israel Journal of Mathematicss 169 (2009), 295--316.
(Also at http://arXiv.org/math/0702788 )
Connectivity
of chamber graphs of buildings and related complexes (with
K. Vorwerk)
Preprint 2009 (14 pp)
Europ. J. Combinatorics 31 (2010), 2149--2160.
(Also at http://arXiv.org/abs/0907.0325 )
A
q-analogue of the FKG inequality and some applications
Preprint 2009 (11 pp)
Combinatorica 31 (2011), 151--164.
(Also at http://arXiv.org/abs/0906.1389 )
Note:
Random-to-front shuffles on trees
Preprint 2008 (6 pp)
Electronic Comm. in Probability 14 (2009), 36--41.
(Also at http://arXiv.org/abs/0901.4278 )
Random
walks, arrangements, cell complexes, greedoids, and
self-organizing libraries
Preprint 2008 (30 pp)
In "Building bridges --- the Lov'asz Festschrift" (eds.
M. Groetschel and G. O. H. Katona),
Bolyai Soc. Math. Studies 19 (2008), Springer, Berlin and
Budapest, pp. 165--203.
(Also at http://arXiv.org/abs/0805.0083 )
Appendix
to "Hyperplane arrangements and box splines" by C. De
Concini and C. Procesi
Preprint 2007 (4 pp)
Michigan Math. Journal 57 (2008), 221--225.
On
sequentially Cohen-Macaulay complexes and posets (with
M. Wachs and V. Welker)
Preprint 2007 (19 pp)
Israel Journal of Mathematicss 169 (2009), 295--316.
(Also at http://arXiv.org/math/0702788 )
Combinatorial
Alexander duality --- a short and elementary proof (with
M. Tancer)
Preprint 2007 (7 pp)
Discrete and Computational Geometry 42 (2009), 586--593.
(Also at http://arXiv.org/abs/0710.1172
A
comparison theorem for $f$-vectors of simplicial polytopes
Preprint 2006 (8 pp)
Pure and Applied Mathematics Quarterly 3 (2007),
347--356.
(Also at http://arXiv.org/math/0605336 )
Rationality
of the M\"obius function of a composition poset (with
B. E. Sagan)
Preprint 2005 (20 pp)
Theoretical Computer Science 359 (2006), 282--298.
(Also at http://arXiv.org/math/0510282 )
An
analogue of Young’s lattice for compositions (with R. P. Stanley)
Preprint 2005 (20 pp)
On
the shape of Bruhat intervals (with T.
Ekedahl)
Preprint 2005 (15 pp)
Annals of Mathematics 170:2 (2009), 799--817.
(Also at http://arXiv.org/math/0508022 )
Topological
Combinatorics
Slides from lecture given at the R. MacPherson 60th birthday
symposium,
IAS, Princeton, October 2004.
Chain
polynomials of distributive lattices are 75 % unimodal (with
J. D. Farley)
Preprint 2004 (7 pp)
Electronic Journal of Combinatorics 12 (2005), N4.
(Also at http://arXiv.org/math/0411610 )
A
note on blockers in posets (with A.
Hultman)
Preprint 2004 (11 pp)
Annals of Combinatorics 8 (2004), 123--131.
(Also at http://arXiv.org/math/0403094 )
Subspace
arrangements defined by products of linear forms (with
I. Peeva and J. Sidman)
Preprint 2003 (20 pp)
Journal of the London Math. Society 71 (2005), 273--288.
(Also at http://arXiv.org/math/0401373 )
Bier
spheres and posets (with A. Paffenholz,
J. Sj\"ostrand and G. M. Ziegler)
Preprint 2003 (15 pp)
Discrete and Computational Geometry 34 (2005), 471--86.
(Also at http://arXiv.org/math/0311356 )
Segre
and Rees products of posets, with ring-theoretic
applications (with V. Welker)
Preprint 2003 (12 pp) Journal of Pure and Applied Algebra 198
(2005), 43--55.
(Also at http://arXiv.org/math/0312516 )
Poset
fiber theorems (with M. Wachs and V.
Welker)
Preprint 2002 (30 pp)
Trans. Amer. Math. Soc., 357 (2004), 1877--1899.
Nerves,
fibers and homotopy groups,
Preprint 2002 (6 pp)
J. Combinatorial Theory, Ser. A, 102 (2003), 88--93.
Neighborhood
complexes of stable Kneser graphs (with M.
de Longueville)
Preprint 2001 (12 pp)
Combinatorica 23 (2003), 23--34.
Geometrically
constructed bases for homology of partition lattices of
types $A$, $B$ and $D$ (with
M. Wachs)
Preprint 2001 (29 pp) (Also at http://arXiv.org/abs/math/0401006 )
Electronic Journal of Combinatorics 11 (2) (2004),
#R3.
Simplicial
manifolds, bistellar flips and a 16-vertex triangulation of
the Poincare homology 3-sphere (with F. H. Lutz)
Preprint 1999 (22 pp)
Experimental Mathematics 21 (2000), 275--289.
Face
numbers of Scarf complexes
Preprint 1998 (12 pp)
Discrete and Computational Geometry 24 (2000), 185--196.
A
combinatorial miscellany (with R. P.
Stanley)
Preprint 1998 (93 pp)
Complexes
of directed graphs (with V. Welker)
Preprint 1998 (13 pp)
SIAM Journal on Discrete Mathematics 12 (1999), 413--424.
Complexes
of not $i$-connected graphs (with E.
Babson, S. Linusson, J. Shareshian and V. Welker)
Preprint 1997 (28 pp)
Topology 38 (1999), 271--299.
The
number of k-faces of a simple d-polytope
(with S. Linusson)
Preprint 1997 (16 pp)
Discrete and computational geometry 21 (1999), 1--16.
Subspace
arrangements over finite fields (with T.
Ekedahl)
Preprint 1996 (26 pp)
Advances in Mathematics 129 (1997), 159--187.
Topological
Methods
in ``Handbook of Combinatorics'' (eds. R. Graham, M. Gr\"otschel
and L. Lov\'asz),
North-Holland, Amsterdam, 1995, pp. 1819--1872.
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