## Speaker:

David Krejcirik

## Institution:

Czech Technical University in Prague

## Time:

Tuesday, June 25, 2019 - 4:00pm

## Host:

## Location:

RH 306

According to the conjecture of Rauch’s from 1974, any eigenfunction corresponding to the principal eigenvalue of the Neumann Laplacian attains its extrema on the boundary of planar domains. After giving an account on the history and validity of the conjecture, we present our own new results for tubular neighbourhoods of curves on surfaces. This is joint work with Matej Tusek.