Organizatorzy

prof. dr hab. Witold Marciszewski
prof. dr hab. Piotr Zakrzewski

Informacje

środy, 16:15 , sala: 5050

Dziedziny badań

Topologia i teoria mnogości

Lista referatów

8 marca 2017 16:15
Jacek Tryba (University of Gdańsk)
Homogeneity of ideals
The homogeneity family of the ideal I is a family of subsets such that the restriction of I to this subset is isomorphic to I. We say that an ideal I is homogeneous if all …
1 marca 2017 16:15
Witold Marciszewski (Uniwersytet Warszawski)
Extension operators and twisted sums - part 2.
25 stycznia 2017 16:15
Witold Marciszewski (Uniwersytet Warszawski)
Extension operators and twisted sums
11 stycznia 2017 16:15
Wiesław Kubiś (Cardinal Stefan Wyszyński University in Warsaw)
Weak amalgamation classes and their limits
We will present the construction and basic properties of limits of classes of finitely generated models satsifying some natural conditions, in particular, the weak amalgamation. This is a straightforward extension of the classical Fraisse theory …
14 grudnia 2016 16:15
Taras Banakh (Lviv National University and UJK Kielce)
On (generically) Haar-meager and Haar-null sets in Polish groups.)
We shall discuss recent joint results with Eliza Jablonska related to (generically) Haar-meager and Haar-null sets in Polish groups.
7 grudnia 2016 16:15
Maciej Malicki (Warsaw School of Economics)
Groups of measurable functions - part 2.
30 listopada 2016 16:15
Maciej Malicki (Warsaw School of Economics)
Groups of measurable functions
Let G be a Polish group, and let m be a non-atomic probability measure on the interval [0,1]. We define L_0(G) to be the Polish group of all m-equivalence classes of m -measurable functions with …
23 listopada 2016 16:15
Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)
More remarks on the intersection ideal M /\ N - part 2.
16 listopada 2016 16:15
Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)
More remarks on the intersection ideal M /\ N
We prove in ZFC that every (M /\ N)-additive set is N-additive.
9 listopada 2016 16:15
Martin Dolezal (Uniwersytet Warszawski)
Haar meager sets - part 2.
26 października 2016 16:15
Martin Dolezal (Uniwersytet Warszawski)
Haar meager sets
The notion of Haar meager sets in abelian Polish groups was introduced by Darji. Haar meager sets form a topological counterpart to Haar null sets defined by Christensen. We show some analogies of Haar meager …
19 października 2016 16:15
Tomasz Cieśla (doktorant UW)
An example of Eberlein compact that is not bisequential
Peter Nyikos gave an example of Eberlein compact that is not bisequential during his talk on Eighth Summer Conference on General Topology and its Applications (over 20 years ago). According to my knowledge he never …
12 października 2016 16:15
Adam Krawczyk (Uniwersytet Warszawski)
Gry Banacha - Mazura na strukturach relacyjnych
8 czerwca 2016 16:15
Saeed Ghasemi (IMPAN)
Non-trivially isomorphic corona algebras
It is well-known that there are Cech-Stone remainders (corona spaces) of locally compact spaces for which the question of whether they are homeomorphic is independent from ZFC (e.g., the Cech-Stone remainders of the ordinals \omega …
1 czerwca 2016 16:15
Piotr Koszmider (IMPAN)
Scattered C*-algebras: A case study in noncommutative set-theoretic topology
The passage from commutative to noncommutative mathematics has stimulated a big part of mathematical research since the mid 20th century which resulted the unprecedented impact of this programme on the shape of today's mathematics. Quite …