Harmonic Analysis and Fractal Geometry

Speaker: 
Benjamin Bruce
Speaker Affiliation: 
UBC

January 15, 2024

ESB 4133 (PIMS library)
Vancouver, BC
Canada

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Abstract: 

In this talk, I will discuss joint work with Malabika Pramanik on the problem of locating patterns in sets of high Hausdorff dimension.  More specifically, suppose $\Gamma$ is a smooth curve in Euclidean space that passes through the origin.  Is it true that every set with sufficiently high Hausdorff dimension must contain two distinct points $x,y$ such that $x-y \in \Gamma$?  We showed that if $\Gamma$ is suitably curved then the answer is yes, while for certain flat curves the answer is no.  This generalizes work of Kuca, Orponen, and Sahlsten, who answered this question affirmatively when $\Gamma$ is the standard parabola in $\mathbb{R}^2$. 

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