田中 亮吉 氏 （東北大学原子分子材料科学高等研究機構） 題目：
Confinement of random walks in Gromov hyperbolic groups
Jian Wang 氏 （福建師範大学）題目：
Ergodicity of Time Changed Symmetric Stable Processes
Sam Sanders 氏（Ghent University）題目：
Taming the Reverse Mathematics zoo
Reverse Mathematics is a program in the foundations of mathematics. Its results give rise to an elegant classification of theorems of ordinary mathematics based on computability. In particular, the majority of theorems fall into only five categories of which the associated logical systems are dubbed `the Big Five'. Recently, a lot of effort has been directed towards finding exceptional principles, i.e. which fall outside the Big Five categories. The so-called Reverse Mathematics zoo is a collection of such exceptional principles (and their relations). During this talk, I show that the uniform versions of the principles from this zoo are equivalent to arithmetical comprehension, i.e. the zoo disappears at the uniform level.