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# Set Theory Talks @SetTheoryTalks@scholar.social

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YSTW2015: Saharon Shelah is telling a joke..:

Filippo Calderoni - The bi-embeddability relation for countable abelian groups
Talk held by Filippo Calderoni (Università di Torino, Italy and Politecnico di Torino, Italy) at the KGRC seminar on 2018-04-26. Abstract: We analyze the Borel complexity of the bi‑embeddability relation for different classes of countable abelian groups. Most notably, we use the Ulm theory to prove tha ...
settheory.mathtalks.org/filipp

Set-Theoretic Topology and Topological Algebra
Set-Theoretic Topology and Topological Algebra International Conference Set-Theoretic Topology and Topological Algebra in honor of professor Alexander Arhangelskii on his 80-th birthday Professor Alexander Vladimirovich Arhangelskii more than forty-five years works at the Faculty of Mechanics and Mathematics, of which over thirty years in the position of professor. A.V. Arhangelskii is a pupil of ...
settheory.mathtalks.org/arhang

The call for the joint PhD programme in Mathematics of the polytechnical university of Torino and of the state university of Torino will open on May 2nd and will close after May 25. The number of the fellowships will be no less than 11.

Applications from strong candidates with interests in logic/set theory are welcome.

Details on how to apply can be found at

poliuni-mathphd-en.campusnet.u

logicatorino.altervista.org/ma

Anthony Bonato: The new world of infinite random geometric graphs
Place: Fields Institute (Room 210) Date: April 20, 2018 (13:30-15:00) Speaker: Anthony Bonato Title: The new world of infinite random geometric graphs Abstract: The \emph{infinite random} or \emph{Rado graph} $R$ has been of interest to graph theorists, probabilists, and logicians for the last half-century. The graph $R$ has many ...
settheory.mathtalks.org/anthon

Diana Carolina Montoya - On some ideals associated with independent families
Talk held by Diana Carolina Montoya (KGRC) at the KGRC research seminar on 2018-04-19. Abstract: The concept of independence was first introduced by Fichtenholz and Kantorovic to study the space of linear functionals on the unit interval. Since then, independent families have been an important object of study ...
settheory.mathtalks.org/diana-

Jonathan Verner: Ultrafilters and models of arithmetic
settheory.mathtalks.org/wednes

Petr Simon
Dear all, I regret to inform you that Petr Simon passed away on Saturday April 14th. The funeral will take place on Friday April 20th at noon in Strasnice. Best, David ...
settheory.mathtalks.org/petr-s

Logic Seminar 18 April 2018 17:00 hrs at NUS
Invitation to the Logic Seminar at the National University of Singapore Date: Wednesday, 18 April 2018, 17:00 hrs Room: S17#04-06, Department of Mathematics, NUS Speaker: Samuel Alfaro Tanuwijaya Title: Introduction to surreal numbers URL: comp.nus.edu.sg/~fstephan/logi In this talk, I will introduce the basic definitions of the surreal numbers an ...
settheory.mathtalks.org/logic-

Appalachian Set Theory workshop: Dilip Raghavan, June 2, 2018
Appalachian set theory Saturday, June 2, 2018 8:30 a.m. - 4:30 p.m. with coffee and lunch breaks Carnegie Mellon University Refreshments in Wean Hall 6220 Breakfast and coffee starting at 7:30 Dilip Raghavan : "Boolean ultrapowers and iterated forcing" Description In joint work with Saharon Shelah, we develop a new method for proving consi ...
settheory.mathtalks.org/appala

CMU math logic seminar, Tuesday 17 April, Aslanyan on "Geometry of
...
settheory.mathtalks.org/cmu-ma

Alexei Kolesnikov: Homology groups in model theory.
Thursday, April 19, 2018, from 4 to 5:30pm East Hall, room 3088 Speaker: Alexei Kolesnikov (Towson University) Title: Homology groups in model theory. Abstract: Higher-dimensional amalgamation properties played a key role in settling several questions in classification theory. It turns out that these properties, suitably formulated, are non-trivial even for ...
settheory.mathtalks.org/alexei

Piotr Borodulin-Nadzieja: Tunnels through topological spaces
Tuesday, April 17, 2018, 17:15 Wrocław University of Technology, 215 D-1 Speaker: Piotr Borodulin-Nadzieja (University of Wroclaw) Title: Tunnels through topological spaces Abstract: I will show a ZFC example of a compact space (without isolated points) through which one cannot drill a tunnel. I will discuss when and when not $omega^*$ ha ...
settheory.mathtalks.org/piotr-

Victoria Gitman - Virtual large cardinal principles
Research Seminar, Kurt Gödel Research Center, Thursday, April 12 Speaker: Victoria Gitman, (Graduate Center, City University of New York (CUNY), USA) Abstract: Given a set-theoretic property $\mathcal P$ characterized by the existence of elementary embeddings between some first-order structures, we say that $\mathcal P$ holds \emph{virtually} if the embe ...
settheory.mathtalks.org/victor

Some *Set Theory minus Choice* open problems, compiled by A. Karagila:
karagila.org/problems.html

Osvaldo Guzman Gonzalez: On weakly universal functions
Thursday, April 12, 2018, from 4 to 5:30pm East Hall, room 3088 Speaker: Osvaldo Guzman Gonzalez (York University) Title: On weakly universal functions Abstract: A function U:[omega_1]^2 ---&gt; 2 is called universal if for every function F:[omega_1]^2 ---&gt; omega there is an injective function h:omega_1 ---&gt; omega_1 such that F(alpha,beta)=U(h(a ...
settheory.mathtalks.org/osvald

Set theory today: A conference in honor of Georg Cantor.
Vienna, September 10-14, 2018

settheory.mathtalks.org/cantor

There are no registration fees but if you plan to attend, please send an email to the organizers: cantor2018.logic@univie.ac.at. If you would like to suggest a contributed talk, please register before May 15 and provide abstract and title for your talk.

CMU math logic seminar 10 Apr, Garrett Ervin on "Decomposing the
...
settheory.mathtalks.org/cmu-ma

Menahem Magidor: Compactness and Incompactness
Place: Fields Institute (Room 210) Date: April 6, 2018 (13:30-15:00) Speaker: Menahem Magidor Title: Compactness and Incompactness Abstract: The problems we shall discuss are examples of compactness (or dually a reflection) problems. A typical compactness property is a statement that a given structure has a certain property, provided smaller some structures have this ...
settheory.mathtalks.org/menahe

Yair Hayut:
BIU seminar in Set Theory April 8, 2018 Speaker: Yair Hayut (TAU) Title: Filter compactness and squares Abstract. Strongly compact cardinals are characterized by the property that any $\kappa$-complete filter can be extended to a $\kappa$-complete ultrafilter. When restricting the cardinality of the underlying set, we obtain a nontrivial hierarchy. For example, when requiring the&hellip; ...
settheory.mathtalks.org/yair-h

YSTW2015: Saharon Shelah is telling a joke..: