Diego A. Mejía (Shizuoka University)  
Preserving splitting families  
We present a method to force splitting families that can be preserved by a large class of finite support iterations of ccc posets. As an application, we show how to force several cardinal characteristics of the continuum to be pairwise different. This is a joint work with Martin Goldstern, Jakob Kellner and Saharon Shelah. 
Sakai Hiroshi (Kobe University)  
Posets of size κ which destroy stationary subsets of P_{κ}(λ)  
We discuss the existence of posets of size κ which do not preserve stationary subsets of P_{κ}(λ). More precisely, the consistencies of the following statements will be discussed:

Fuchino Sakae (Kobe University)  
A/the (possible) solution of Continuum Problem and the existence of Laver generic large cardinal  
https://fuchino.ddo.jp/talks/abstract20200728.pdf 
Fuchino Sakae (Kobe University)  
A/the (possible) solution of the Continuum Problem  
In this talk, I am going to reuse the slides of my recent talk in Wrocław, though I am going to modify/improve some details of the slides for my presentation in Kobe set theory seminar. 
Francesco Parente (Kobe University)  
Some combinatorics of ultrafilters on Cohen and random algebras  
I will present recent joint work with Jörg Brendle, concerning ultrafilters on complete Boolean algebras. In particular, I will focus on some consistency results about Tukey reducibility and the ultrafilter number. The main motivation is to understand and classify (not necessarily generic) ultrafilters on the algebras adjoining Cohen and random reals. 
Fuchino Sakae (Kobe University)  
On algebraic and geometrical characterizations of linear mappings  
Under ZF+AD any f : R^{m} → R^{n} is a Rlinear mapping if and only if f is additive. More generally under ZF any such f is Rlinear if and only if it is additive and continuous. In my talk, I will address the question whether f as above is a Rlinear mapping if f sends each line in R^{m} either to a point or to a line in R^{n}. 