1 Table of Contents: “... Theorem and Tait’s Equivalence -- 22. The Four-Color Theorem -- 23. The Great Debate -- 24. How Does One...”

2 Table of Contents: “... -- 6 Planarity -- 7 Graph Traversals -- 8 Degree Sequences -- 9 Graph Colorings -- 10 Directed Graphs...”

3 Table of Contents: “... Directed Graphs -- 2.0 Introduction -- 2.1 Basic Concepts -- 2.2 Tournaments -- 2.3 K-Partite Tournaments...”

4 Table of Contents: “... The Borsuk-Ulam theorem in various guises; 2.2 A geometric proof; 2.3 A discrete version: Tucker's lemma; 2.4...”

5 “...–22, 2019 in Nashville, Tennessee. The conference was the sixteenth in a series of meetings...”

6 Table of Contents: “... -- 2.2 Fuzzy Line Graphs -- 2.3 Fuzzy Interval Graphs -- 2.4 Operations on Fuzzy Graphs -- 2.5 On Fuzzy...”

7 Table of Contents: “... -- 10 Another Look at Large Sets of Steiner Triple Systems -- 11 (22, 33,12, 8, 4)-BIBD, AN UPDATE....”

8 Table of Contents: “.... Arboricity, Squares, and Triangles -- 21. Recognizing Median Graphs -- 22. Recognizing Partial Hamming Graphs...”

9 Table of Contents: “... -- The Cayley color graph of a group presentation -- an introduction to surface topology -- Imbedding problems...”

10 Table of Contents: “... 22. Random graphs almost optimally colorable in polynomial time; Chapter 23. Subcube coverings...”

11 Table of Contents: “... of Convex Sets: Formulation of the Problems -- 2.1 Basic Algorithmic Problems for Convex Sets -- 2.2...”

12 Table of Contents: “... of Convex Sets: Formulation of the Problems -- 2.1 Basic Algorithmic Problems for Convex Sets -- 2.2...”

13

14 Table of Contents: “... computational approach -- 22) A. Raigorodskii: Coloring distance graphs and graphs of diameters -- 23) M...”

15 Table of Contents: “... weight cliques, minimum weighted clique covers and minimum colorings of claw-free perfect graphs...”

16 “... Theory XV, which was held May 22–25, 2016 in San Antonio, Texas. The conference was the fifteenth in a...”

17 Table of Contents: “... on equidecomposibility of polygons -- 2.1 Introduction -- 2.2 Item 2 below (nearing completion) -- 2.3 Item 6 below (old...”

18 Table of Contents: “... Colijn-Plazzotta rank -- 22 Furnas rank -- 23 Less established tree shape statistics that are (im)balance...”

19 Table of Contents: “...22. Sergei Odintsov: Belnap constants and Nelson logic -- 23. Hitoshi Omori and Toshiharu Waragai...”

20 Table of Contents: “... matroides parfaits; Chapter 37. On edge-coloration of multigraphs (Abstract); Chapter 38. Primitive...”