# Editors

**Editor-in-Chief:**

**R. Martin**, Iowa State University: Extremal graph theory; extremal poset theory; probabilistic combinatorics

**Editorial Board:**

**K. Adaricheva**, Hofstra University: Semidistributive lattices; convex geometries and antimatroids; lattices of classes and theories; lattices in knowledge representation, AI and combinatorics

**R. Aharoni**, Technion, Israel Institute for Technology: Matching theory, in particular in hypergraphs; duality;topological methods in combinatorics

**H. Alt**, Freie Universität Berlin: Algorithms and complexity; computational geometry; pattern and shape Analysis

**M. Aschenbrenner**, University of California, Los Angeles: Ordered algebraic structures; interactions between the theory of ordered sets and mathematical logic

**M. Axenovich**, Karlsruhe Institute of Technology: Ramsey and anti-Ramsey type problems in graphs, integers, partially ordered sets; extremal problems in graphs

**G.R. Brightwell**, London School of Economics: Combinatorics of finite partially ordered sets; random structures and processes; asymptotic enumeration

**J.-P. Doignon**, Université Libre de Bruxelles: Combinatorics of partial orders, especially interval orders and semiorders; order polytopes; applications to human sciences

**D. Duffus**, Emory University: Combinatorics of partially ordered sets, set systems and finite lattices; homomorphisms of relational Systems

**M. Erné**, Leibniz University: Combinatorics of finite orders; distributivity, continuous lattices and domains; adjunctions and duality; order, topology and closure

**D. Feichtner-Kozlov**, University of Bremen: Topological properties of partially ordered sets

**S. Felsner**, Technical University Berlin: Graph theory, discrete geometry, ordered sets, particularly dimension, related parameters and containment orders

**R. Freese**, University of Hawaii: Modular and semidistributive lattices, free lattices, congruence lattices; lattice algorithms

**M. Grabisch**, University Paris I Panthéon-Sorbonne, Paris School of Economics: lattices, polyhedral and order polytopes, applications to human sciences

**J. Griggs**, University of South Carolina: Combinatorics of partially ordered sets, especially families of subsets; extremal and structural problems; Sperner theory

**G. Gutin**, Royal Holloway, University of London: Combinatorial structures and algorithms, in particular digraph theory and algorithms

**J. Harding**, New Mexico State University: Lattices and ordered algebraic structures, particularly completions, and structures arising in logic, topology, and theoretical physics

**P. Jipsen**, Chapman University: Lattice theory

**J. Kahn**, Rutgers University: Probabilistic and other non-combinatorial methods; linear extensions

**K. Kearnes**, University of Colorado: Lattice theory; ordered algebraic structures

**A. Kostochka**, University of Illinois at Urbana-Champaign: Graphs; digraphs and set systems; dimension of partially ordered sets.

**C. Laflamme**, University of Calgary: Set theory; infinite combinatorics and orders

**B. Larose**, Champlain College and Lacim-Uqam: Complexity and digraph homomorphisms; algebraic and topological aspects of posets and digraphs

**L. Lu**, University of South Carolina: Large information networks; probabilistic methods; spectral graph theory; random graphs; extremal problems on hypergraphs and posets; algorithms; graph theory

**D. Mubayi**, University of Illinois at Chicago: Extremal and probabilistic questions on all finite structures, including graphs, partially ordered sets and hypergraphs

**N. Reading, **North Carolina State University: Partial orders arising in combinatorics, particularly in relation to coxeter groups and cluster algebras; semidistributive lattices arising in combinatorics and representation theory

**S. Shahriari**, Pomona College: Combinatorics of subset and subspace lattices, normalized matching posets, and related Areas

**J. Stembridge**, University of Michigan: Enumerative and combinatorial aspects of partially ordered sets

**G. Tardos**, Rényi Institute of Mathematics, Budapest: Combinatorics; discrete and computational geometry; complexity theory

**W.T. Trotter**, Georgia Institute of Technology: Extremal problems for graphs and posets; on-line algorithms, approximation algorithms; Ramsey theory; discrete geometry and optimization

**D.B. West**, University of Illinois at Urbana-Champaign: Extremal and structural problems for partially ordered sets; connections to graph theory