Papers (with pdf links to recent ones)
Submitted (comments are welcome)
 (NEW!) On the chromatic number of trianglefree
hypergraphs (with
A. Frieze), submitted (22 pages)
 Coloring Hfree hypergraphs (with
T. Bohman, A. Frieze), submitted (17 pages)
 Hypergraphs with independent neighborhoods (with
T. Bohman, A. Frieze, O. Pikhurko), submitted (12 pages)
 Simplex stability (with
R. Ramadurai), submitted (15 pages)

Set systems with union and intersection constraints (with R. Ramadurai), submitted (5 pages)

Tworegular subgraphs of hypergraphs (with J. Verstraete), submitted (14 pages)

Set systems without a simplex or a cluster (with P. Keevash), submitted (23 pages)

Turan's theorem with colors (with A. Diwan), submitted (12 pages)

When is an almost monochromatic K4 guaranteed? (with A. Kostochka), submitted (9 pages)
Accepted

Extremal problems for tpartite and tcolorable hypergraphs (with
J. Talbot), Electronic Journal of Combinatorics (10 pages)

Quadruple systems with independent neighborhoods (with Z. Furedi and
O. Pikhurko), Journal of Combinatorial Theory, Series A (10 pages)

Combinatorial problems for horn clauses
(with M. Langlois, R. Sloan, G. Turan), Tenth International Symposium on
Artificial Intelligence and Mathematics (ISAIM 2008) (6 pages)
 Constructions of nonprincipal families in extremal hypergraph theory
(with O. Pikhurko), Discrete Mathematics (Special Issue in honor of Miklos Simonovits' 60th birthday) (11 pages)
2008

A new short proof of a theorem of Ahlswede and Khachatrian
(with J. Balogh), Journal of Combinatorial Theory, Series A 115 (2008),
no. 2, 326330
2007
 Forbidding complete hypergraphs as traces
(with Y. Zhao), Graphs and Combinatorics 23 (2007), no. 6, 667679
 An intersection theorem for four sets
, Advances in Mathematics, 215 (2007) no. 2, 601615
 On the independence number of the ErdosRenyi and Projective Norm graphs and a related hypergraph
(with J. Williford), Journal of Graph Theory 56 (2007), no. 2, 113127
 Codegree density of hypergraphs
(with Y. Zhao), Journal of Combinatorial Theory, Series A, 114 (2007), no. 6, 11181132
 A new generalization of Mantel's theorem to kgraphs
(with O. Pikhurko), Journal of Combinatorial Theory, Series B,
97 (2007), no. 4, 669678
 Minimal paths and cycles in
setsystems (with J. Verstraete), European Journal of Combinatorics, 28 (2007), no. 6, 16811693

Efficient Algorithms for the Inverse Protein Folding
Problem on 2D and 3D Lattices (with P. Berman, B.
DasGupta, R. H. Sloan, G. Turan, Y. Zhang), Discrete Applied Mathematics, 155 (2007), no. 67, 719732.

On the VCdimension of uniform hypergraphs
(with Y. Zhao), Journal of Algebraic Combinatorics, 25 (2007), no. 1, 101110
 On the chromatic number and independence number of hypergraph products
(with V. Rodl), Journal of Combinatorial Theory, Series B, 97 (2007), no. 1, 151155
 Rainbow Turan Problems
(with P. Keevash, B. Sudakov, J. Verstraete), Combinatorics Probability and
Computing 16 (2007), 109126.
 Structure and stability
of trianglefree set systems, Transactions of the American
Mathematical Society, 359 (2007), 275291.
2006

Set systems with no singleton intersection
(with P. Keevash and R. Wilson), SIAM Journal on Discrete Mathematics
20 (2006), no. 4, 10311041.
 On the edgebandwidth of graph products
(with J. Balogh, A. Pluhar), Theoretical Computer Science, 359 (2006) 4357
 Supersaturation for RamseyTuran Problems (with V. Rodl), Combinatorica, 26 (2006), no. 3, 315332
 Explicit constructions of triple systems for
RamseyTuran problems (with V. T. Sos),
Journal of Graph Theory, 52 (2006), no. 3, 211216
 ErdosKoRado for three sets,
Journal of Combinatorial Theory, Series A, 113 (2006), no. 3, 547550 (the journal version has some minor typos in it, involving the characterization of equality in Frankl's theorem and the ErdosKoRado theorem. These are corrected in the version posted here)
 The DNF Exception
Problem
(with G. Turan, Y. Zhao), Theoretical Computer Science, 352 (2006), no. 13, 8596.
 A hypergraph extension of
Turan's theorem, Journal of Combinatorial Theory, Series B, 96 (2006), no. 1, 122134
2005
 Proof of a conjecture of Erdos on triangles in set systems
(with J. Verstraete), Combinatorica, 25
(2005), no. 5, 599614
 The codegree density of the
Fano plane, Journal of Combinatorial Theory, Series B, 95 (2005), no. 2, 333337
 Nonuniform Turantype problems (with Y. Zhao), Journal of Combinatorial Theory, Series A, 111 (2005) 106110
 Constructions of bipartite graphs from
finite geometries (with K. Mellinger), Journal of Graph Theory 49 (2005), no. 1, 110.
2004
 A family of switch equivalent graphs
(with B. Guenin, P.
Tetali), Discrete Mathematics 288 (2004), no. 13, 2935.

Uniform edge distribution in hypergraphs is hereditary
(with V. Rodl), Electronic Journal of Combinatorics, 11 (2004), no. 1, Research Paper R55, 32pp. (electronic)
 Stability results for cancellative hypergraphs
(with
P. Keevash), Journal of Combinatorial Theory, Series B, 92 (2004) 163175
 An explicit construction for a Ramsey
problem , Combinatorica, 24 (2004), no. 2, 313324
 A hypergraph extension of the Bipartite Turan
problem (with J. Verstraete), Journal of Combinatorial Theory, Series A 106 (2004) no. 2,
237253
 How many disjoint 2edge paths must a cubic graph
have? (with A. Kelmans), Journal of Graph Theory 45 (2004), no. 1, 5779

Efficient Algorithms for the Inverse Protein Folding
Problem on 2D and 3D Lattices (with P. Berman, B.
DasGupta, R. H. Sloan, G. Turan, Y. Zhang), Fifteenth Annual
Combinatorial Pattern Matching (CPM) Symposium, LNCS 3109, pp. 244253, July 2004, and accepted in Discrete Applied Math
2003
 Coloring with threecolored subgraphs , Journal of Graph
Theory 42 (2003), no. 3, 193198
 On hypergraphs with every four points spanning at
most two triples, Electronic Journal of Combinatorics, 10
(2003), no. 1, Research Paper N10, 4 pp. (electronic)
 On a twosided Turan problem (with Y. Zhao),
Electronic Journal of Combinatorics,
10 (2003), no. 1, Research Paper R42, 17 pp. (electronic)
2002
 The Chromatic Spectrum of Mixed Hypergraphs (with
T. Jiang, Z. Tuza, V. Voloshin, D. B. West), Graphs and
Combinatorics, 18 (2002), no. 2, 309318
 New lower bounds for Ramsey numbers of graphs and
hypergraphs (with F. Lazebnik), Advances in Applied
Mathematics, 28 (2002), no. 34, 544559
 Some exact results and new asymptotics for
hypergraph Turan numbers , Combinatorics, Probability and
Computing, 11 (2002), no. 3, 299309
 On Restricted EdgeColorings of Bicliques (with D.
B. West), Kleitman and combinatorics: a celebration (Cambridge,
MA, 1999). Discrete Mathematics (2002), no. 23, 513529
 Generalizing the Ramsey Problem
through Diameter,
Electronic Journal of Combinatorics, 9 (2002), no. 1,
Research Paper 42, 10 pp. (electronic)
 On the Turan number of Triple Systems(with V.
Rodl), Journal of Combinatorial Theory, Series A, 100 (2002), no. 1,
136152
 Intersecting Curves in the Plane,
Graphs and Combinatorics, 18 (2002), no. 3, 583589
2001
 Minimal Completely Separating Systems of
kSets (with A. Kundgen, P. Tetali),
Journal of Combinatorial Theory, Series A, 93 (2001), no. 1, 192198
 Large induced forests in sparse graphs (with N.
Alon, R. Thomas), Journal of Graph Theory, 38 (2001), no. 3,
113123
 On the chromatic number of setsystems (with A.
Kostochka, V. Rodl, P. Tetali), Random Structures and
Algorithms, 19 (2001), no. 2, 8798
 Asymptotically optimal treepackings in regular graphs
(with A. Kelmans, B. Sudakov),
Electronic Journal of Combinatorics 8 (2001), no. 1, Research Paper
38, 8 pp. (electronic)
 Realizing Degree Imbalances in Directed Graphs
(with D. B. West, T. G. Will), Discrete Mathematics 239 (2001),
no. 13, 147153
2000
 Graphic Sequences that have a Realization with Large Clique
Number, Journal of Graph Theory, 34 (2000), no. 1, 2029
 On generalized Ramsey theory: the bipartite case
(with M. Axenovich, Z. Furedi), Journal of Combinatorial Theory, Series B, 79 (2000), \
no. 1, 6686
 New Upper Bounds for a Canonical Ramsey Problem (with T.
Jiang), Combinatorica, 20 (1) (2000) 141146
 Multiple Vertex Coverings by Specified Induced Subgraphs
(with Z. Furedi, D. B. West), Journal of Graph Theory, 34
(2000), no. 2, 180190
 EdgeColoring Cliques with Many Colors on Subcliques (with
D. Eichhorn), Combinatorica, 20 (3) (2000) 441444
 EdgeBandwidth of Theta Graphs (with D. Eichhorn,
K. O'Bryant, D. B. West), Journal of Graph Theory, 35 (2000) 8998
 On the Number of Vertices with Specified Eccentricity
(with D. B. West), Graphs and Combinatorics, 16 (4) (2000)
441452
1999
 Signed Domination in Regular Graphs and SetSystems, (with
Z. Furedi), Journal of Combinatorial Theory, Series B, 76 (1999), no. 2,
223239
 Edge Bandwidth of Graphs (with T. Jiang, A. Shastri, D. B.
West),
SIAM Journal on Discrete Mathematics 12 (1999), no. 3, 307316
1998
 EdgeColoring Cliques with Three Colors on all 4cliques,
Combinatorica, 18 (1998), no. 2, 293296
 Connectivity and Separating Sets of Cages (with T.
Jiang), Journal of Graph Theory, 29 (1998), no. 1, 3544