*Time: *Friday, March 09, 2012,
16h-17h

*Location: *salle W

## Squareful points on hyperplanes

**Karl van Valckenborgh**
(Leiden)

In this talk, I will explain how one can determine the asymptotic behaviour of the number of integral points on the hyperplane X_0+ ... +X_n=0$ for which each coordinate is a squareful number using the classical circle method, given that n>= 4. I will also indicate how this result improves our intuition when considering the problem with only three squareful numbers.