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photo of Oleg PikhurkoOleg Pikhurko

Assistant Professor
Ph.D., Cambridge University

Office: Wean Hall 6305
Phone: (412) 268-9827
E-mail: pikhurko@andrew.cmu.edu
Personal web site

Research

I work in various areas of discrete mathematics including extremal graphs and Ramsey theory.

I find it always fascinating when the ideas and techniques from other areas (such as, for example, linear algebra or Fourier analysis) apply to combinatorial problems and vice versa. One of such powerfull tools, which interests me very much, is the probabilistic method.

My recent projects deal with the hypergraph Turan problem, first-order formulas on graphs, and some questions from combinatorial number theory.

Selected Publications

The Minimum Size of Saturated Hypergraphs, Comb, Prob & Comp, 8 (1999) 483-492.

Weakly Saturated Hypergraphs and Exterior Algebra, Comb, Prob & Comp, 10 (2001) 435-451

Size Ramsey Numbers of Stars versus 3-Chromatic Graphs, Combinatorica, 21 (2001) 403-412.

(with A.Thomason) Disjoint Subgraphs of Large Maximum Degree, Discr Math, 248 (2002) 125-141.

(with Z.Furedi and M.Simonovits) The Turan Density of the Hypergraph {abc,ade,bde,cde}, Electronic J Comb, 10 (2003) 7pp.

The complete list (with downloadable papers) is available at http://www.math.cmu.edu/~pikhurko/Papers/