SIAM Journal on Discrete Mathematics (SIDMA) publishes research papers of exceptional quality in pure and applied discrete mathematics, broadly interpreted. The journal's focus is primarily theoretical rather than empirical, but the editors welcome papers that evolve from or have potential application to real-world problems. Submissions must be clearly written and make a significant contribution.Topics include but are not limited to:properties of and extremal problems for discrete structurescombinatorial optimization, including approximation algorithmsalgebraic and enumerative combinatoricscoding and information theoryadditive, analytic combinatorics and number theorycombinatorial matrix theory and spectral graph theorydesign and analysis of algorithms for discrete structuresdiscrete problems in computational complexitydiscrete and computational geometrydiscrete methods in computational biology, and bioinformaticsprobabilistic methods and randomized algorithms.