Year: 2023

Binary Cyclic Group Codes

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Mustafa Kemal Turak, Dokuz Eylül University. Date: 4th of  January, 2024, Thursday, Time: 11.00 – 12:00. Place: Dokuz Eylül Univ., Tınaztepe Campus, Faculty of Science, Department of Mathematics, Room B206.

Abstract: In this talk, we will first give the definition of cyclic codes. We will then show that each cyclic code can be seen as an ideal in the quotient ring F[x]/(x^{n}-1). Next, we will introduce group codes and examine the relationship between cyclic group codes and cyclic codes.  

Accessibility for Everyone in Career: Disability and Society

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This month’s theme of our career event, organized jointly by DEU Faculty of Science, Department of Mathematics and Department of Statistics, in cooperation with DEU Career Planning Center, is “Accessibility for Everyone in Career”. The talk titled “Disability and Society”, which will be held under the moderation of Prof. Dr. Özlem Ege ORUÇ and with the participation of Lawyer Melike TOKSOY, is open to everyone and everyone who is interested is welcome (Those who are interested can contact Assoc. Prof. Dr. Özgül Vupa ÇİLENGİROĞLU or Asst.Prof. Dr. Celal Cem SARIOĞLU.).

Speaker: Av. Melike TOKSOY
Moderator: Prof. Dr. Özlem EGE ORUÇ
Date and Time: 20.12.2023, 14:30
Location: Online DEU
Channel: DEÜİSTATİSTİKKARİYER

ATA FORECASTING METHOD AS A BENCHMARK

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Prof. Dr. Güçkan YAPAR, Department of Statistics, Faculty of Science, DEU, İzmir Date: December 13, 2023, Wednesday Time: 15:00 Place: Classroom B256, Department of Mathematics, Faculty of Science, DEU, İzmir.

Abstract: ATA forecasting method is a new method which is proposed as an alternative to basic forecasting method exponential smoothing (ES) and ARIMA. Although Ata method is structurally similar to the ES method but it is completely different in content. Ata method is simple, fast and more accurate than its alternatives. Ata method has taken its place in the literature by proving its success with its forecasting performance in M-competition data sets.

Torsion Free Covers of Line Quivers

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Canan Özeren, Dokuz Eylül University. Date: 6th of December, 2023, Wednesday, Time: 13.30 – 14.30. Place: Dokuz Eylül Univ., Tınaztepe Campus, Faculty of Science, Department of Mathematics, Room B206 (Online-Sakai-Graduate Meetings).

Abstract: Torsion-free covers exist for abelian groups (see [1]). The coGalois group of automorphisms a torsion-free cover \phi: T \rightarrow A of an abelian group A is defined in [2] as the group of f: T \rightarrow T s.t. \phi f= \phi and is denoted by G(\phi). The abelian groups for which the coGalois group is trivial were characterized in [3]. The notion of coGalois group can be defined in any category where we have a covering class. In [4], coGalois groups have been studied in the category of representations of the quiver q_2 : \cdot \rightarrow \cdot . We talk about the existence and uniqueness of the torsion free-cover of an object in (q_n, Z-mod) (see [5]).

References:

[1] E. Enochs: Torsion-free covering modules. (1963).

[2] E. Enochs, J. R. Rozas and L. Oyonarte: Compact coGalois groups. (2000).

[3] E. Enochs and J. Rada: Abelian groups which have trivial absolute \\ coGalois group. (2005).

[4] Paul Hill, Abelian group pairs having a trivial coGalois Group. (2006).

[5] Molly Dunkum Wesley, Phd Thesis at The Graduate School University of Kentucky. (2005)

Bialgebroids and Dual Calculus

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Keremcan Doğan , İstanbul Technical University Postdoctoral Researcher.

Date: 10th of  November, 2023, Friday.

Time: 12.30 – 13.30.

Place: Dokuz Eylül Univ., Tınaztepe Campus, Faculty of Science, Department of Mathematics, Room B206.

Abstract: In this talk, we will first explain why algebroids constitute a good framework for generalizations of geometric structures suitable for string and M theories. After a quick overview of their fundamental properties, we will focus on bialgebroids and algebroid calculus. Then, we will be interested in the extensions of Drinfel’d doubles using these notions and certain compatibility conditions between them. We will finish the discussion with the relation between our constructions and exceptional geometries required for string theory. If time permits, we will slightly touch upon the global picture about the formal bundle rackoids.

+1 Step in Career: Student Clubs

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This month’s theme of our career event is “+1 Step in Career: Student Clubs”, and we are hosting the DEU Robotics Club (DeuRov), Industrial Engineering Student Club (DEU EMT) and IEEE Dokuz Eylül University Student Branch in our event. The event is open to all mathematics department students and those who are interested. Those who are interested are kindly requested to contact the moderator (Asst.Prof.Dr. Celal Cem SARIOĞLU).

Speakers:

Date and Time: 03.11.2023, 12:30
Location: B253 (DEÜ Faculty of Science, Department of Mathematics)

Tensor Product II

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Mücahit Bozkurt, Manisa Celal Bayar University. Date: 1st of  November, 2023, Wednesday, Time: 13:30 – 14:30. Place: Dokuz Eylül Univ., Tınaztepe Campus, Faculty of Science, Department of Mathematics, Room B206 (Online-Sakai-Graduate Meetings).

Abstract: Let R be a ring with identity and let M and N be R-modules (M a right R-module and N a left R-module). We denote the tensor product with M\otimes_R N.  This week, we will continue to talk about various properties of tensor product of M and N. References

  1. Kasch, F. (1982). Modules and rings (Vol. 17). Academic press.
  2. Bland, P. (2011). Rings and Their Modules. Berlin/New York: de Gruyter.

Tensor Product

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Mücahit Bozkurt, Manisa Celal Bayar University. Date: 25th of  October, 2023, Wednesday, Time: 13:30 – 14:30. Place: Dokuz Eylül Univ., Tınaztepe Campus, Faculty of Science, Department of Mathematics, Room B206 (Online-Sakai-Graduate Meetings).

Abstract: Let R be a ring with identity and let M and N be R-modules (M a right R-module and N a left R-module). In this talk, we will define tensor product of M and N.  We will also discuss various properties of tensor product of M and N. We will denote the tensor product with M\otimes_R N.

References

  1. Kasch, F. (1982). Modules and rings (Vol. 17). Academic press.
  2. Bland, P. (2011). Rings and Their Modules. Berlin/New York: de Gruyter.

I am Writing a TÜBİTAK 2209-A Project

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The theme of our career event this month is “I am Writing a TÜBİTAK 2209-A Project”, and in our event, information will be given about TÜBİTAK 2209-A University Students Research Projects and a conversation will be held on the points to be considered when writing a project. The event is open to all mathematics department students and those who are interested. Those who are interested are asked to contact the speaker.

Speaker: Asst.Prof.Dr. Celal Cem SARIOĞLU
Date and Time: 27.10.2023, 12:10
Location: https://online.deu.edu.tr/
Channel: DEUMatematikKariyer

Career Tips from Young Graduates

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In cooperation with Dokuz Eylül University Faculty of Science, Department of Mathematics and Career Planning Center, on 25.09.2023 at 12.05, a conversation titled “Career Tips from Young Graduates” will be held with Aslı GÜLTEKİN, Mathematics 2023 graduate, under the moderation of Celal Cem SARIOĞLU. The talk is open to all mathematics department students and those who are interested. Those who are interested are asked to contact the moderator.

Speaker: Aslı GÜLTEKİN (Data Scientist, Pivony)
Date and Time: Monday, 25.09.2023, 12.05
Location: online.deu.edu.tr
Channel: DEUMatematikKARİYER