23 October 16:00

#### Bilkent University Analysis Seminars

##### Quantisations of Ordered *-Spaces
###### Aurelian Gheondea, Bilkent University

An ordered *-space is a complex vector space endowed with an involution and a strict cone, with certain compatibility conditions. A quantisation of an ordered *-space Z is a sequence of strict cones in M_n(Z), the tensor product of the C*-algebra of n x n complex matrices with Z, with certain compatibility conditions. We show that to any ordered *-space one ...Detay »

Analysis | English

23.10.2018_13:45

24 October 14:00

#### Ä°stanbul University Mathematics Department Seminars

##### 4-boyutlu farklÄ± metrik iÅŸaretli manifoldlar Ã¼zerindeki rekÃ¼ran tensÃ¶r alanlarÄ±
###### Bahar KÄ±rÄ±k, Marmara Ãœniversitesi

Bu konuÅŸmada, (+, +, -, -), (+, +, +, -) ve (+, +, +, +) metrik iÅŸaretlerine sahip 4-boyutlu manifoldlar Ã¼zerindeki ikinci mertebeden simetrik ve anti-simetrik olan tensÃ¶r alanlarÄ±ndan bahsedilecektir. Ä°lk olarak, 4-boyutlu manifoldlar Ã¼zerindeki bazÄ± geometrik yapÄ±lar hakkÄ±nda bilgi verilecektir. Daha sonra, rekÃ¼ran tensÃ¶r alanlarÄ± incelenecekt...Detay »

Geometry | Turkish

21.10.2018_16:51

iu

24 October 14:00

#### Galatasaray University Mathematics Department Seminars

##### On an algebraic definition of the Boy surface.
###### FranÃ§ois Apery, UniversitÃ© de Haute Alsace

In 1984, I was able to obtain a parametrization of the Boy surface by eliminating the Whitney umbrellas of the Steiner surface using the so-called hyperbolic confluence of pairs of singularities. As a result, the Boy surface appears to be a real algebraic surface of degree six. However, the construction was a mix of geometry, differential topology and singu...Detay »

Mathematics | English

16.10.2018_13:21

oguzabel

24 October 15:00

#### Ä°stanbul University Mathematics Colloquium

##### In silico Biyoloji: Omik Teknolojilerden Sentetik Biyolojiye
###### Åžule ArÄ±, Ä°stanbul Ãœniversitesi

GÃ¼nÃ¼mÃ¼zde yaÅŸam bilimlerinde ve molekÃ¼ler biyolojideki hÄ±zlÄ± veri birikimi, bulgularÄ±n analizinde matematiksel yaklaÅŸÄ±mlarÄ±n kullanÄ±mÄ±nÄ± artÄ±rmÄ±ÅŸtÄ±r. Genotip-fenotip iliÅŸkisinin aydÄ±nlatÄ±lmasÄ±na odaklanmÄ±ÅŸ olan yaÅŸam bilimleri 2000â€™li yÄ±llardan itibaren geliÅŸen sÃ¼reÃ§teki olaÄŸanÃ¼stÃ¼ ilerlemeyi, Ä°nsan Genom Projesiâ€™nin Ã¶nÃ...Detay »

Other | Turkish

21.10.2018_16:55

iu

24 October 15:30

#### Yozgat Bozok University Mathematics Department General Seminars

##### Coverings and actions of internal groupoids within the category of groups with operations
###### H. Fulya AkÄ±z, Yozgat Bozok Ãœniversitesi

Groupoids are mathematical structures that have proved to be useful in many areas of science. A groupoid is a small category in which each arrow has an inverse and a group-groupoid is an internal groupoid in the category of groups. It is known that if $X$ is a topological group, then the fundamental groupoid $\pi_1 X$ is a group groupoid. Then the catego...Detay »

Geometry, Topology | Turkish

22.10.2018_12:33

bozok

25 October 12:40

#### SabancÄ± University Algebra Seminars

##### Exact and asymptotic enumeration of integer partitions
###### Jehanne Dousse, UniversitÃ¤t ZÃ¼rich

A partition of n is a non-increasing sequence of positive integers whose sum is n. Though their definition is easy to state, partitions are very difficult to count, and no simple formula is known for their number. However, it is possible to obtain nice asymptotics formulas. This was first done by Hardy and Ramanujan using the circle method, which relies ...Detay »

Algebra | English

23.10.2018_13:41

25 October 15:40

#### Middle East Technical University General Seminars

##### Fine structure constant and Why Atiyah was wrong about it
###### Bayram Tekin, ODTÃœ

Atiyah just proposed an explanation for the number 137 that plays a major role in Nature and every matter we see around. I will explain why his approach is bound to fail.Detay »

Mathematical Physics | English

22.10.2018_13:37

odtu

25 October 16:00

#### Mimar Sinan Fine Arts University General Seminars

###### Ayesha Asloob Qureshi, SabancÄ± Ãœniversitesi

We introduce the concept of t-spread monomials and t-spread strongly stable ideals. These concepts are a natural generalization of strongly stable and squarefree strongly stable ideals. For the study of this class of ideals we use the t-fold stretch- ing operator. It is shown that t-spread strongly stable ideals are componentwise linear. Their height, th...Detay »

Algebra | English

20.10.2018_11:13

msgu

26 October 14:00

#### Gebze Technical University Mathematics Department Seminars

##### Dynamical and Geometrical Structures of Curl Forces
###### Partha Guha, S.N. Bose National Centre for Basic Sciences

We give a gentle introduction to the Hamiltonian formalism of curl forces, introduced by Berry and Shukla and show its application to non-central forces and dynamics related to saddle potentials. We demonstrate its connection with the cofactor systems introduced by the LinkÃ¶ping school. We impose gyroscopic and frictional type forces on the existing curl f...Detay »

Applied Mathematics | English

22.10.2018_10:16

gtumatematik

26 October 15:30

#### Middle East Technical University Lie Algebras Meetings

##### Representations of simple Lie algebras
###### Emre CoÅŸkun, ODTÃœ

In this series of meetings, we will cover the beginning of the book Lectures on Lie Groups and Lie Algebras by Roger Carter, Graeme Segal, Ian Macdonald. This week, our speaker will cover the pages 25-29.Detay »

Lie Algebras | English

22.10.2018_10:43

odtu