The 6th Workshop on

«Algebraic Graph Theory and its Applications»

«Algebraic Graph Theory and its Applications»

March 21−25, 2022

The main goal is to embrace recent results in developing Algebraic Graph Theory and its Applications, in particular, we are interested in structural and spectral characterization of highly regular graphs, investigating graphs defined on groups, computing coherent closures of graphs, constructing new codes and designs.

The workshop is organized by Mathematical Center in Akademgorodok in cooperation with the Sino-Russian Mathematics Center at Peking University in Beijing and the Three Gorges Mathematical Research Center at China Three Gorges University in Yichang.

The workshop is organized by Mathematical Center in Akademgorodok in cooperation with the Sino-Russian Mathematics Center at Peking University in Beijing and the Three Gorges Mathematical Research Center at China Three Gorges University in Yichang.

March 21,

online

online

15:00 **Eiichi** **Bannai**, Explicit construction of exact unitary designs

16:00**Da Zhao**, The complex conjugate invariants of Clifford groups

16:30**Yanzhen Xiong**, Diagonal forms of inclusion matrices of rainbow subsets

17:00**Denis** **Krotov**, On constructing nonlinear MRD codes

18:00**Ivan** **Mogilnykh**, On the minimum distances of codes from the inclusion matrices of 2-subsets vs. k-subsets

16:00

16:30

17:00

18:00

March 22,

online

online

15:00 **Akihiro** **Munemasa**, Extended double covers of non-symmetric association schemes of class 2

15:30**Y****u Jiang**, Terwilliger F-algebras of quasi-thin association schemes

16:00**Vladislav** **Kabanov**, New constructions of strongly regular graphs based on divisible design graphs

17:00**Dmitry** **Panasenko**, More about vertex connectivity of special classes of divisible design graphs

17:30**Paul-Hermann Zieschang**, Association schemes, hypergroups, and twin buildings

18:30**Grigory Ryabov**, Isomorphism testing of k-spanning tournaments is fixed-parameter tractable

15:30

16:00

17:00

17:30

18:30

March 23,

online

online

15:00 **Shamil Asgarli**, The rigidity of maximum cliques in pseudo-Paley graphs

16:00**Chi Hoi Yip**, On the clique number of Paley graphs and generalized Paley graphs

17:00**Sergey Goryainov**, On EKR properties of Peisert-type graphs

17:30**Anwita Bhowmik**, On a Paley-type graph on Zn

16:00

17:00

17:30

March 24,

online

online

15:00 **Peter Cameron**, Super graphs on group

16:00**Victor Panshin**, Recognition of groups E±6(3) by Gruenberg-Kegel graph

16:30**Kristina Ilenko**, Recent results of studying Gruenberg-Kegel graph coincidence of some non-isomorphic finite group

17:00**Nikolay Minigulov**, Finite solvable groups which Gruenberg-Kegel graphs are isomorphic to the paw

17:30**Dmitriy Churikov**, Minimal generating sets for primitive 3/2-transitive groups

16:00

16:30

17:00

17:30

March 25,

online

online

15:00 **Yaokun Wu**, Collapsing a colorful simplicial complex

16:00**Alexander Mednykh**, Spectral invariants of cyclic coverings of a graph

17:00**Artem Kravchuk**, Spectrum of the Transposition graph

17:30**Honghai Li**, Polynomials and spectral radius of hypergraphs

Closing

16:00

17:00

17:30

Closing

PARTICIPANTS

We adore mail!

in Akademgorodok

mca@nsu.ru

Elena Konstantinova

Organizer

e_konsta@math.nsc.ru

e_konsta@math.nsc.ru

Grigory Ryabov

Organizer

**gric2ryabov@math.nsc.ru**

Dmitry Churikov

Organizer

chdv@math.nsc.ru

chdv@math.nsc.ru

Supported by the Mathematical Center in Akademgorodok under agreement No. 075-15-2019-1675 with the Ministry of Science and Higher Education of the Russian Federation