Konuk Matematikçiler


  Konuk Matematikçi   Jesper Michael Moller
  Kurum   University of Copenhagen
  Alan   Categories of p-subgroups
  Ziyaret Tarihi   11.05.2014 - 17.05.2014
  Etkinlikler   Title: Categories of p-subgroups
Time: May 14, Wednesday 15:40-16:30
Place: Bilkent Math. Department Seminar Room

Abstract: Let G be a finite group and p a prime number. The set p-subgroups of G form the object set of at least six different categories: The poset ordered by inclusion, the transporter category, the fusion category, the exterior quotient of the fusion category, the orbit category, the linking category. These categories admit weightings and coweightings defining their Euler characteristics.

The (co)weigtings for the various p-subgroup categories seem to carry interesting information: 1. They point to homotopy equivalences between certain subcategories of the p-subgroup categories 2. They relate Frobenius' theorem on the number of solutions in G to g^n=e to Brown's theorem on the Euler characteristic of the poset of p-subgroups 3. They may have something to say about the two big conjectures, Quillen's conjecture on contractibility of p-subgroup posets and Alperin's Weight Conjecture, in this area.
  Ev Sahibi   Bilkent University
  İletişim   Ergun Yalcin: yalcine@fen.bilkent.edu.tr
   
  | ekleyen admin | eklemezamanı 11.05.2014_22:28


  Konuk Matematikçi   Bert-Wolfgang Schulze
  Kurum   Potsdam Üniversitesi Matematik Enstitüsü
  Alan   Pseudo-diferensiyel operatorler
  Ziyaret Tarihi   05.05.2014 - 18.05.2014
  Etkinlikler   Potsdam Üniversitesi Matematik Enstitüsü öğretim üyelerinden Prof. Dr. Bert-Wolfgang Schulze 5 – 18 Mayıs 2014 tarihleri arasında Yeditepe Üniversitesi Matematik Bölümünün konuğu olacaktır. Pseudo-diferensiyel operatorler konusunun önde gelen araştırmacılarından biri olan Prof. Dr. Schulze, 8 ve 9 Mayıs 2014 tarihlerinde bir dizi seminer yapacaktır.

SEMİNER YERİ: Yeditepe Üniversitesi Matematik Bölümü
TARİHLERİ: 8 ve 9 Mayıs 2014
SAATİ: 15.00
  Ev Sahibi   Yeditepe Üniversitesi Matematik Bölümü
  İletişim   Okay Celebi : celebi@metu.edu.tr
   
  | ekleyen admin | eklemezamanı 29.04.2014_00:54


  Konuk Matematikçi   Ian Morisson
  Kurum   Fordham University
  Alan   Algebraic groups
  Ziyaret Tarihi   25.04.2014 - 21.05.2014
  Etkinlikler   I will first review basic results about invariants of actions of algebraic group, especially reductive ones (finite generation of rings of invariants, separation by invariants, linearization). Then I will discuss closure of orbits, surjectivity properties of quotients and the notions of good and geometric quotients, and the Hilbert-Mumford numerical criterion for stability.
In the last week, I will explain how the theory from the first part is worked out for Hilbert points of pluricanonical curves and what this is good for. I will explain what a moduli space is, using the moduli space $M_g$ of smooth curves of genus $g$ as a model, and why finding compactifications of moduli spaces is important. Then I will sketch how the moduli space $\overline{M}_g$ of stable curves is constructed as a GIT quotient and how variants of this construction give rise both to log minimal models arising in the Hassett-Keel program and to alternate compactifications of $M_g$. These variants call for new techniques that will be the subject of my Colloquium talk.
The initial lectures will be largely self-contained; the later ones will use some black boxes, notably the construction of the Hilbert scheme.

Dates: 25 April 2014 – 21 May 2014
Place: Galatasaray University FEF 10
Introductory Courses
25 April 2014 Friday 13.30
30 April 2014 Wednesday 16.30
2 May 2014 Friday 13.30
7 May 2014 Wednesday 16.30

Advanced Courses
16 May 2014 Friday 13.30
21 May 2014 Wednesday 16.30
  Ev Sahibi   Galatasaray University
  İletişim   Ayberk Zeytin : ayberkz@gmail.com
  Web   http://math.gsu.edu.tr/morrison-invariant.html
   
  | ekleyen admin | eklemezamanı 21.04.2014_17:39


  Konuk Matematikçi   Bob Oliver
  Kurum   Université Paris 13
  Alan   Algebraic and Geometric Topology
  Ziyaret Tarihi   14.04.2014 - 24.04.2014
  Etkinlikler   BILKENT GENERAL SEMINAR
Title: Local structure of groups and of their classifying spaces
Speaker: Bob Oliver (Université PARIS 13)
Date: April 16, 2014 Wednesday 15:40-16:30
Place: Math Department Seminar Room

BILKENT ALGEBRAIC TOPOLOGY SEMINAR--10
Title: Reduced fusion systems over small 2-groups
Speaker: Bob Oliver (Université PARIS 13)
Date: April 21, 2014 Monday 13:40-15:00
Place: Math Department Seminar Room
  Ev Sahibi   Bilkent University
  İletişim   Ergun Yalçın: yalcine@fen.bilkent.edu.tr
   
  | ekleyen admin | eklemezamanı 13.04.2014_22:51


  Konuk Matematikçi   Piotr Kowalski
  Kurum   Wroclaw University
  Alan   Model Theory
  Ziyaret Tarihi   08.04.2014 - 30.06.2014
  Etkinlikler   İstanbul Bilgi Üniversitesi'nde, 8 Nisan'dan itibaren her hafta, 'Berkovich uzayları' üzerine seminerler dizisi düzenlenecektir. Seminerler, TÜBİTAK 2221 Konuk veya Akademik İzinli (Sabbatical) Bilim İnsanı Destekleme Programı tarafından desteklenen Piotr Kowalski (Wroclaw Universitesi) tarafından organize edilmektedir. Sunumlar İngilizce olacaktır. İlgilenen herkes katılabilir.

Organizer: Piotr Kowalski (Wroclaw University, visiting İstanbul Bilgi University supported by TUBITAK 2221 programme, host: Selçuk Demir)

Theme: Berkovich spaces: what are they, why are they useful, what do they have to do with model theory?
Place: Istanbul Bilgi University, Dolapdere Campus, Room 514 (5th floor).
Time: Tuesdays, 16:30 - 18:30.
First meeting: April 8, 2014.
  Ev Sahibi   Selçuk Demir, İstanbul Bilgi University
  İletişim   sdemir@bilgi.edu.tr, 0212 311 54 20
   
  | ekleyen admin | eklemezamanı 08.04.2014_16:23


  Konuk Matematikçi   Nils-Peter Skoruppa
  Kurum   Universität Siegen, Max-Planck Institute für Mathematik
  Alan   Number Theory, in particular, Automorphic forms
  Ziyaret Tarihi   10.03.2014 - 20.03.2014
  Etkinlikler   İstanbul Üniversitesi Matematik Bölümü'nden Hatice Boylan ile yürüttükleri Hilbert modular groups ve Hilbert modular forms konulu proje kapsamında çalışmalar yapacak ve İstanbul Üniversitesi'nde 18 Mart 2014 salı günü saat 14:00'te bir genel seminer verecektir.
  Ev Sahibi   İstanbul Üniversitesi Matematik Bölümü, Hatice Boylan.
  İletişim   Hatice Boylan: hatice.boylan@gmail.com
   
  | ekleyen admin | eklemezamanı 15.03.2014_22:14


  Konuk Matematikçi   Hamzi Boumediene
  Kurum   Imperial College London, Birleşik Krallık
  Alan   Mathematical Learning Theory
  Ziyaret Tarihi   01.03.2014 - 10.04.2014
  Etkinlikler   Dr. Hamzi Boumediene will give a lecture series on 'Mathematical Learning Theory' at the Department of Mathematics, Yıldız Technical University. Details about the series are below.
The object of these lecture series is to introduce advanced undergraduade students and graduate students to Learning Theory.
All interested are invited.

Dates of the lectures:
13.03.2014(10:00-12:00)
20.03.2014(10:00-12:00)
27.03.2014(10:00-12:00)
02.04.2014(10:00-12:00)
09.04.2014(10:00-12:00)

Place of lectures: Davutpasa Campus, Department of Mathematics, EZ-18.
References:
Books: 
1. Learning Theory: An Approximation Theory Viewpoint by Felipe Cucker  and Ding Xuan Zhou
2. Learning From Data by Yaser S. Abu-Mostafa, Malik Magdon-Ismail,  Hsuan-Tien Lin
3. Foundations of Data Science,  http://www.cs.cornell.edu/jeh/book112013.pdf, Hopcroft and Kannan

Papers:
1. On the Mathematical Foundations of Learning, F. Cucker and S. Smale
2. The Mathematics of Learning: Dealing with Data, T. Poggio and S. Smale

Note: For more information, please contact Boumediene Hamzi at b.hamzi@imperial.ac.uk.
  Ev Sahibi   Yıldız Technical University, Department of Mathematics,
  İletişim   ferhatkuruz@gmail.com, b.hamzi@imperial.ac.uk
   
  | ekleyen admin | eklemezamanı 11.03.2014_10:35


  Konuk Matematikçi   Piotr Kowalski
  Kurum   University of Wrocław
  Alan   Geometric model theory
  Ziyaret Tarihi   20.02.2014 - 20.03.2014
  Etkinlikler   Mini-course: "Model Theory of Fields" by Piotr Kowalski

Short Description:
I plan to introduce some notions of geometric model theory (Morley rank, stability) in the concrete cases of fields (with a possible extra structure). I would like to emphasize connections between algebraic geometry and model theory, both on a basic level: Ax's theorem and completeness of ACF_0, Chevalley's Theorem on Constructible Sets and elimination of quantifiers, existence of the field of definition and elimination of imaginaries; and (time permitting) on a more advanced level: Zilber's trichotomy and diophantine geometry, rationality of Poincare power series and elimination of quantifiers for p-adics.

Background needed: Basic knowledge of commutative algebra

First meeting and first lecture: 20 February 2014, Thursday 10.00 (during 5 weeks)

MSGSU Math Dept, Seminar Room (Bomonti)
  Ev Sahibi   Ayşe Berkman, MSGSU Math Dept
  İletişim   ayseberkman@gmail.com
   
  | ekleyen admin | eklemezamanı 18.02.2014_11:52


  Konuk Matematikçi   Dikran Dikranjan
  Kurum   University of Udine
  Alan   Topological Groups
  Ziyaret Tarihi   27.01.2014 - 30.01.2014
  Etkinlikler   Prof. Dikran Dikranjan from University of Udine is visiting Istanbul and will give a series of lectures on Topological Groups in Istanbul Center of Mathematical Sciences (IMBM).

The program is
27-28-29-30 January, from 10:00-12:30. All lectures will be held in IMBM, in Boğaziçi University.

Topological Groups:
This is an introductory course in topological groups. Among others we pay particular attention to topologizing groups with Hausdroff groups topologies. This leads to various issues related to Pontryagin duality (in the abelian case) and the Zariski/Markov topology in the non-abelian one. Furthermore, a powerful technique, due to Protasov and Zelenyuk, building topologies determined by convergent sequences will also be considered.
  Ev Sahibi   Istanbul Center of Mathematical Sciences
  İletişim   Kıvanç Ersoy: ersoykivanc@gmail.com
   
  | ekleyen admin | eklemezamanı 19.01.2014_16:39


  Konuk Matematikçi   Mutsuo Oka
  Kurum   Tokyo University
  Alan   Geometry and Topology
  Ziyaret Tarihi   05.11.2013 - 26.11.2013
  Etkinlikler   IMBM LECTURE SERIES

Toric Modification of Singularities
Lecture 1: Tuesday November 12 16:30-18:00
Lecture 2: Wednesday November 13 16:30-18:00
Lecture 3: Tuesday November 19 16:30-18:00


All talks will be held at IMBM Seminar Room, Bogazici University, South Campus.
  Ev Sahibi   IMBM, istanbul center for mathematical sciences
  İletişim   ferit.ozturk@boun.edu.tr
  Web   http://www.imbm.org.tr/indexen.htm
   
  | ekleyen admin | eklemezamanı 05.11.2013_01:13