Combinatorics and Optimization courses I have taken:
250 - Introduction to Optimization
330 - Combinatorial Enumeration
430 - Algebraic Enumeration
442 - Graph Theory
444 - Algebraic Graph Theory
446 - Matroid Theory
450 - Combinatorial Optimization
456 - Introduction to Game Theory
463 - Convex Optimization and Analysis
471 - Semi-Definite Optimization
739 - Topics in Combinatorics: Multivariate Stable Polynomials: Theory and Applications