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Set Theory Talks @SetTheoryTalks@scholar.social

Mikołaj Krupski: The functional tightness of infinite products
Place: Bahen Centre (BA 2165) Date: June 1, 2018 (13:30-15:00) Speaker: Mikołaj Krupski Title: The functional tightness of infinite products Abstract: The functional tightness $t_0(X)$ of a space $X$ is a cardinal invariant related to both the tightness $t(X)$ and the density character $d(X)$ of $X$. While the tightness $t(X)$ me ...
settheory.mathtalks.org/mikola

Novi Sad Conference in Set Theory and General Topology, Novi Sad, July 2-5, 2018
The international conference “Novi Sad Conference in Set Theory and General Topology” SETTOP 2018 that will take place from July 2nd to July 5th 2018 in Novi Sad. Confirmed invited speakers: David Asperó (Norwich) David Chodounský (Prague) Natasha Dobrinen (Denver) Vera Fischer (Vienn ...
settheory.mathtalks.org/settop

Martin Goldstern: Higher Random Reals
HUJI Logic Seminar Tuesday 29/5 13:30-15:00 Ross 63 Title: Higher Random Reals Speaker: Martin Goldstern Abstract: The set of real numbers is often identified with Cantor Space 2^omega, with which it shares many important properties: not only the cardinality, but also other "cardinal characteristics" such as cov(null), the smallest number of measure zero sets needed to cover… ...
settheory.mathtalks.org/martin

Otmar Spinas: Why Silver is special
Place:   Bahen Center BA6183 Date: May 25, 2018 (13:30-15:00) Speaker: Otmar Spinas Title:  Why Silver is special Abstract: I will try to give some insight into the challenging combinatorics of two amoeba forcings, one for Sacks forcing, the other one for Silver forcing. They can be used two obtain some new consistencies of inequalities between the additivity and… ...
settheory.mathtalks.org/otmar-

Borisha Kuzeljevic - P-ideal dichotomy and some versions of the Souslin Hypothesis
Talk held by Borisha Kuzeljevic (Czech Academy of Sciences, Prague) at the KGRC seminar on 2018-05-24. Abstract: The talk will be about the relationship of PID with the statement that all Aronszajn trees are special. This is joint work with Stevo Todorcevic. ...
settheory.mathtalks.org/borish

Harry Altman: Lower sets in products of well-ordered sets and related WPOs
Thursday, May 24, 2018, from 4 to 5:30pm East Hall, room 4096 Speaker: Harry Altman (University of Michigan) Title: Lower sets in products of well-ordered sets and related WPOs Abstract: Following last week's talk on maximum order types of well partial orders, we'll compute the maximum order type of the set of b ...
settheory.mathtalks.org/harry-

Wednesday seminar
Dear all, The seminar meets on Wednesday May 23rd at 11:00 in the Institute of Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building. Program: Damian Sobota -- Rosenthal families and ultrafilters Rosenthal's lemma is a simple technical result with numerous applications to measure theory and Banach space theory. The lemma in its simplest… ...
settheory.mathtalks.org/wednes

Takeuti Memorial Symposium, Kobe, September 18 - 20, 2018
AML 2018 – Takeuti Memorial Symposium Symposium on Advances in Mathematical Logic 2018 Dedicated to the Memory of Professor Gaisi Takeuti (1926-2017) September 18 (Tue) - 20 (Thu), 2018 Kobe, Japan   Dear all, We are pleased to announce the international conference SAML 2018 / Takeuti Memorial Symposium Symposium on Advances in Mathematical L ...
settheory.mathtalks.org/takeut

Alessandro Vignati: Homeomorphisms of Cech-Stone remainders
Place: Bahen Centre Information T (Room BA 2165) Date: May 18, 2018 (13:30-15:00) Speaker: Alessandro Vignati Title: Homeomorphisms of Cech-Stone remainders Abstract: From a locally compact space X one construct its Cech-Stone remainder X*=beta X minus X. We analyze the problem on whether X* and Y* can be homeomorphic for different spaces ...
settheory.mathtalks.org/alessa

Yair Hayut - Stationary reflection at $\aleph_{\omega+1}$
Talk held by Yair Hayut (Hebrew University of Jerusalem, Israel) at the KGRC seminar on 2018-05-17. Abstract: Stationary reflection is one of the basic prototypes of reflection phenomena, and its failure is related to many counterexamples for compactness properties (such as almost free non-free abelian groups, and more). In 1982, Magidor showed that it ...
settheory.mathtalks.org/yair-h

2017 North American ASL Meeting, Illinois, March 20-23, 2017
  Association for Symbolic Logic 2018 North American Annual Meeting May 16 - May 19, 2018 Western Illinois University • Macomb, Illinois   Invited Speakers: Plenary Speakers: JC Beall, University of Connecticut (TBA) A. Chernikov, University of California at Los Angeles (Local distality and distal parts of stable theories) B. Har ...
settheory.mathtalks.org/2017-n

Harry Altman: Well partial orderings and their maximum extending ordinals
Thursday, May 17, 2018, from 4 to 5:30pm East Hall, room 4096 Speaker: Harry Altman (University of Michigan) Title: Well partial orderings and their maximum extending ordinals Abstract: A well partial order is a partial order all of whose extensions to a total order are well-orders. (These are often studied as wel ...
settheory.mathtalks.org/harry-

Osvaldo Guzman: hm and the ultrafilter number
Place: Bahen Centre Information T .   BA 2165 Date: May 11, 2018 (13:30-15:00) Speaker: Osvaldo Guzman Title: hm and the ultrafilter number Abstract: The cardinal invariant $\mathfrak{hm}$ is defined as the minimum size of a family of $\mathsf{c}_{\mathsf{min}}$-monochromatic sets that cover $2^{\omega}$ (where $\mathsf{c}_{\mathsf{min}}\left( x,y\right) $ is the pa ...
settheory.mathtalks.org/osvald

Andrzej Starosolski: The Rudin-Keisler ordering of P-points under b=c
Tuesday, May 15, 2018, 17:15 Wrocław University of Technology, 215 D-1 Speaker: Andrzej Starosolski (Silesian University of Technology) Title: The Rudin-Keisler ordering of P-points under b=c Abstract: M. E. Rudin proved under CH that for each P-point there exists another P-point strictly RK-greater . Assuming $mathfrak p ...
settheory.mathtalks.org/andrze

Wednesday seminar
Dear all, The seminar meets on Wednesday May 9th at 11:00 in the Institute of Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building. Program: Jonathan Verner -- Ultrafilters and nonstandard models of arithmetic (This is a talk postponed from April 18th.) Best, David ...
settheory.mathtalks.org/wednes

Vincenzo Dimonte - The sensitive issue of iterability
Talk held by Vincenzo Dimonte (University of Udine, Italy) at the KGRC seminar on 2018-05-03. Abstract: In the momentous years when the community of set theorists was reaching the definite answer for the problem of the consistency of the Axiom of Determinacy, Martin wrote a small paper in the Proceedings of the International Congress of… ...
settheory.mathtalks.org/vincen