Tabla de Contenidos: “…11.Submodular functions and matroid union -- 11.1.Deriving matroids from submodular functions -- 11.2.The theorems of Hall and Rado -- 11.3.Matroid union and its applications -- 11.4.Amalgams and the generalized parallel connection -- 11.5.Generalizations of delta-wye exchange -- 12.The Splitter Theorem -- 12.1.The theorem and its proof -- 12.2.Applications of the Splitter Theorem -- 12.3.Variations on the Splitter Theorem -- 13.Seymour's Decomposition Theorem -- 13.1.Overview -- 13.2.Graphic, cographic, or a special minor -- 13.3.Blocking sequences -- 13.4.R12-minors -- 14.Research in representability and structure -- 14.1.The Well-Quasi-Ordering Conjecture for Matroids -- 14.2.Branch-width -- 14.3.Rota's Conjecture and the Well-Quasi-Ordering Conjecture -- 14.4.Algorithmic consequences -- 14.5.Intertwining -- 14.6.Inequivalent representations -- 14.7.Ternary matroids -- 14.8.Stabilizers -- 14.9.Unavoidable minors -- 14.10.Growth rates -- 15.Unsolved problems -- 15.1.Representability: linear and algebraic -- 15.2.Unimodal conjectures -- 15.3.Critical problems -- 15.4.From graphs to matroids -- 15.5.Enumeration -- 15.6.G amino ids and transversal matroids -- 15.7.Excluding a uniform matroid -- 15.8.Negative correlation -- 15.9.A miscellany.…”