LIST OF TALKS Monday: 9:10 - 10:00 R. Meshulam: Higher dimensional expansion I (slides) 10:10 - 10:40 H. R. Tiwary: Introduction to Extended Formulations (slides) 11:10 - 12:00 X. Goaoc: Helly numbers and the topological complexity of families of sets I (slides) 12:10 - 12:40 M. Balko: Recent progress on Hill's conjecture (slides) 17:10 - 18:00 J. Matousek: Ellipsoids and discrepancy 18:10 - 18:40 A. Sheffer: Perpendicular bisectors and few distinct distances (slides) Tuesday: 9:10 - 10:00 H. Edelsbrunner: Approximation and convergence of the first intrinsic volume (slides) 10:10 - 11:00 R. Meshulam: Higher dimensional expansion II 11:30 - 12:20 X. Goaoc: Helly numbers and the topological complexity of families of sets II 12:30 - 12:50 G. Rote: Noncrossing matchings (slides) 20:00 - 21:00 Problem Session Wednesday: Trip(s) Thursday: 9:10 - 9:40 O. Raz: Polynomials vanishing on Cartesian products: The Elekes-Szab\'o Theorem revisited 9:50 - 10:20 P. Valtr: Central projections with individual centres 10:50 - 11:30 U. Wagner: Eliminating Tverberg Points 11:40 - 12:10 Z. Safernova: Multilevel polynomial partitions 12:20 - 12:50 B. Benedetti: Embeddings of collapsible complexes and extremal constructions for collapsibility (slides) 17:00 - 17:30 I. Barany: Helly type theorems for sums of unit vectors (slides, with few intended inaccuracies for attention of the audience) 17:35 - 17:55 P. Patak: 3-monotone interpolation (slides) 18:00 - 18:30 M. Saumell: On the Hamiltonicity and related properties of variants of the Delaunay triangulation (slides) 18:35 - 18:55 E. Nevo: How many n-vertex triangulations does the 3-sphere have? (slides) Friday: 9:10 - 10:00 B. Bukh: Long common subsequences in words and permutations 10:10 - 10:40 M. Krcal: Robust properties of zero sets 11:10 - 12:00 K. Adiprasito: Higher chordality in combinatorics and polytope theory 12:10 - 12:40 T. Kaiser: Hypergraphs of d-intervals