T. Tsankov

activity

20242026

collaborators

4 papers

math.DS2026

Dense and comeager conjugacy classes in zero-dimensional dynamics

Michal Doucha, Julien Melleray, Todor Tsankov

Given a countable group $G$ , we initiate a systematic study of the Polish spaces of all minimal and topologically transitive actions of $G$ on the Cantor space by homeomorphisms, w…

math.LO2026

Locally $ℵ_{0}$ -categorical theories and locally Roelcke precompact groups

ItaÃ¯ Ben Yaacov, Todor Tsankov

It is well-known that Polish Roelcke precompact groups are the groups that can be represented as automorphism groups of $ℵ_{0}$ -categorical structures in continuous logic and th…

math.DS2025

Non-singular and probability measure-preserving actions of infinite permutation groups

Todor Tsankov

We prove two theorems in the ergodic theory of infinite permutation groups. First, generalizing a theorem of Nessonov for the infinite symmetric group, we show that every non-singu…

math.LO2024

Extremal models and direct integrals in affine logic

ItaÃ¯ Ben Yaacov, TomÃ¡s IbarlucÃa, Todor Tsankov

Affine logic is a fragment of continuous logic, introduced by Bagheri, in which only affine functions are allowed as connectives. This has the effect of endowing type spaces with t…

Dense and comeager conjugacy classes in zero-dimensional dynamics

Locally ℵ0​-categorical theories and locally Roelcke precompact groups

Non-singular and probability measure-preserving actions of infinite permutation groups

Extremal models and direct integrals in affine logic

Locally $ℵ_{0}$ -categorical theories and locally Roelcke precompact groups