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Finding a robust representation of the conditional distribution of a signal given a noisy observation is a classical problem in stochastic filtering. Such representations are of interest as they justify the use of discrete observation data and ensure robustness of […]

The fields of set theory and homological algebra are both centrally concerned with questions of compactness, regarding the extent to which a structure's global properties are determined by its local properties. It is thus no surprise that there has been […]

Notes: unusual hour.

Abstract: Many key properties and applications of magnetic materials are strongly intertwined with the spatial distribution of magnetic moments inside the corresponding specimens. In addition to classical magnetic structures, magnetic skyrmions have raised interest in spintronics as carriers of information […]

Counting the number of subgroups in a finite group has numerous applications, ranging from enumerating certain classes of finite graphs (up to isomorphism), to counting how many isomorphism classes of finite groups there are of a given order. In this […]

This talk will not assume any knowledge of derived categories. Two rings are "Morita equivalent" if they have equivalent module categories, and if a property of rings depends only on the module category, then it is called "Morita invariant". More […]

Notes: Online seminar, also streamed in RSLT11.

TBC

Notes: unusual room.

The Ramsey theorem was the first example of a natural result escaping the Big Five phenomenon, which had so far identified every result to have equivalent strength to one of five classical axiomatic bases. It has since then been thoroughly […]

We study how to construct a stochastic process on a finite interval with given `roughness'. We first extend Ciesielski's isomorphism along a general sequence of partitions, and provide a characterization of Hölder regularity of a function in terms of its […]

Notes: unusual day.

TBA