Recent Comments

Recent Posts
 Why Quantum Computers Cannot Work: The Movie!
 Levon Khachatrian’s Memorial Conference in Yerevan
 NavierStokes Fluid Computers
 Pictures from Recent Quantum Months
 Joel David Hamkins’ 1000th MO Answer is Coming
 Amazing: Peter Keevash Constructed General Steiner Systems and Designs
 Many Short Updates
 Many triangulated threespheres!
 NatiFest is Coming
Top Posts & Pages
 Why Quantum Computers Cannot Work: The Movie!
 Believing that the Earth is Round When it Matters
 The KadisonSinger Conjecture has beed Proved by Adam Marcus, Dan Spielman, and Nikhil Srivastava
 Polymath 8  a Success!
 Analysis of Boolean Functions
 Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
 In how many ways you can chose a committee of three students from a class of ten students?
 János Pach: Guth and Katz's Solution of Erdős's Distinct Distances Problem
 'Gina Says'
RSS
Tag Archives: Geometric combinatorics
A Discrepancy Problem for Planar Configurations
Yaacov Kupitz and Micha A. Perles asked: What is the smallest number C such that for every configuration of n points in the plane there is a line containing two or more points from the configuration for which the difference between the … Continue reading
Extermal Combinatorics II: Some Geometry and Number Theory
Extremal problems in additive number theory Our first lecture dealt with extremal problems for families of sets. In this lecture we will consider extremal problems for sets of real numbers, and for geometric configurations in planar Euclidean geometry. Problem I: Given a set A of … Continue reading