1. Simple Graph Density Inequalities with No Sum of Squares Proofs

   • Grigoriy Blekherman
   • Annie Raymond
   • Rekha R. Thomas

   Original paper 05 March 2020 Pages: 455 - 471

2. Expander Graphs — Both Local and Global

   • Michael Chapman
   • Nati Linial
   • Yuval Peled

   Original paper 06 July 2020 Pages: 473 - 509

3. On Almost k-Covers of Hypercubes

   • Alexander Clifton
   • Hao Huang

   Original paper 28 April 2020 Pages: 511 - 526

4. Large Cliques in Hypergraphs with Forbidden Substructures

   • Andreas F. Holmsen

   Original paper 04 March 2020 Pages: 527 - 537

5. On Closest Pair in Euclidean Metric: Monochromatic is as Hard as Bichromatic

   • C. S. Karthik
   • Pasin Manurangsi

   Original paper 28 April 2020 Pages: 539 - 573

6. Short Directed Cycles in Bipartite Digraphs

   • Paul Seymour
   • Sophie Spirkl

   Original paper 28 April 2020 Pages: 575 - 599

7. Weakly Norming Graphs are Edge-Transitive

   • Alexander Sidorenko

   Original paper 31 July 2020 Pages: 601 - 604