A. Fish

activity

20052026

most citedCharacteristic Polynomial Patterns in Difference Sets of Matrices

7 citations · 28 across the 31 of their papers we have counts for

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Showing 2019Show all

3 papers · 1 filter

math.DS2019

Sets of transfer times with small densities

Michael Björklund, Alexander Fish, Ilya D. Shkredov

We consider in this paper the set of transfer times between two measurable subsets of positive measures in an ergodic probability measure-preserving system of a countable abelian g…

math.CO2019

Patterns in sets of positive density in trees and affine buildings

M. Björklund, A. Fish, J. Parkinson

We prove an analogue for homogeneous trees and certain affine buildings of a result of Bourgain on pinned distances in sets of positive density in Euclidean spaces. Furthermore, we…

math.DS2019★ 1 cited

Extensions of Schreiber's theorem on discrete approximate subgroups in $R^{d}$

Alexander Fish

In this paper we give an alternative proof of Schreiber's theorem which says that an infinite discrete approximate subgroup in $R^{d}$ is relatively dense around a subspace.…

Sets of transfer times with small densities

Patterns in sets of positive density in trees and affine buildings

Extensions of Schreiber's theorem on discrete approximate subgroups in Rd

Extensions of Schreiber's theorem on discrete approximate subgroups in $R^{d}$