Combinatorics Combinatorial analysis 28 Mathematics 26 Algorithms 8 Computer science 8 Number Theory 7 Number theory 7 Algebra 6 Algebraic Geometry 5 Geometry, Algebraic 5 Graph Theory 5 Graph theory 5 Geometry 4 Operations research 4 Algebraic Topology 3 Algebraic topology 3 Convex and Discrete Geometry 3 Convex geometry 3 Discrete geometry 3 Linear and Multilinear Algebras, Matrix Theory 3 MATHEMATICS 3 Management science 3 Mathematical optimization 3 Matrix theory 3 Operations Research, Management Science 3 Probabilities 3 Probability Theory and Stochastic Processes 3 Algorithm Analysis and Problem Complexity 2 Analysis 2 Calculus 2