2023-ary quasigroups and related topics

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2023-ary quasigroups and related topics
Sobolev Institute of Mathematics, room 115, Novosibirsk

Topic of the seminar
discrete mathematics, algebraic combinatorics scientific reports and abstract reports are heard at the seminar; on days when there is no keynote speaker, there are discussions and short presentations

Time and place:
every Friday, 11:00, room 115 in Sobolev Institute of Mathematics + ZOOM

Seminar organizers
Avgustinovich Sergey Vladimirovich
Krotov Denis Stanislavovich
Potapov Vladimir Nikolaevich
Taranenko Anna Aleksandrovna

Institutions
Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk


*2023-ary quasigroups and related topics, Novosibirsk*

	*May 24, 2024 (Fri)*

1.	On the eigenvectors of the quotient matrix of a perfect coloring of a Q-polynomial graph. D. S. Krotov, V. N. Potapov May 24, 2024 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*May 17, 2024 (Fri)*

2.	Estimates for the number of vertices of the polyhedron of polystochastic matrices A. A. Taranenko May 17, 2024 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 15, 2023 (Fri)*

3.	Every latin hypercube of order 5 contains transversals A. L. Perezhogin, V. N. Potapov, S. Yu. Vladimirov September 15, 2023 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*June 23, 2023 (Fri)*

4.	On the classification of perfect colorings of small degree in the hypercube D. S. Krotov June 23, 2023, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*January 20, 2023 (Fri)*

5.	Perfect colorings of the hypergraph of submatrices Borodin Semen Olegovich January 20, 2023 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*October 14, 2022 (Fri)*

6.	Completely regular codes in the Hoffman-Singleton graph Mamchits, I. A. October 14, 2022 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*August 19, 2022 (Fri)*

7.	On test fragments of circulant graphs M. A. Lisitsyna August 19, 2022 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*May 20, 2022 (Fri)*

8.	Authomorphism groups of distance-regular graphs (Dr.Sc. dissertation) L. Yu. Tsiovkina May 20, 2022 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*April 1, 2022 (Fri)*

9.	Survey: Zagier D. "Newman's short proof on the prime number theorem." Am. Math. Monthly, 1997. S. A. Malyugin April 1, 2022 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*January 21, 2022 (Fri)*

10.	On numbers written with a small number of digits in different numeration systems K. V. Storozhuk January 21, 2022 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 24, 2021 (Fri)*

11.	Embedding in MDS codes and Latin cubes V. N. Potapov September 24, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 17, 2021 (Fri)*

12.	Projective tilings and full-rank perfect codes D. S. Krotov September 17, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 10, 2021 (Fri)*

13.	Zp-null Design Spaces: Minimum Distances and Dimensions (survey) I. Yu. Mogil'nykh September 10, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 3, 2021 (Fri)*

14.	Optimal functions with spectral constraints in hypercubes A. A. Valyuzhenich September 3, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*August 6, 2021 (Fri)*

15.	Differential equations in the theory of permutation patterns S. V. Kitaev August 6, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*January 22, 2021 (Fri)*

16.	On some equitable 2-partitions of Hamming graph of diameter 3 I. Yu. Mogil'nykh January 22, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*January 15, 2021 (Fri)*

17.	Perfect colorings of the crossed prism graph M. A. Lisitsyna January 15, 2021 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*December 18, 2020 (Fri)*

18.	Review: Induced subgraphs of hypercubes and a proof of the Sensitivity Conjecture (H.Huang, 2019) A. A. Valyuzhenich, I. Yu. Mogil'nykh December 18, 2020 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*November 6, 2020 (Fri)*

19.	On q-ary propelinear codes from regular subgroups of the affine group I. Yu. Mogil'nykh, F. I. Solov'eva November 6, 2020 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*October 30, 2020 (Fri)*

20.	Bipartite perfect colorings of the infinite square grid: twin colors and the covering case D. S. Krotov October 30, 2020 11:00, Novosibirsk, online


	*October 2, 2020 (Fri)*

21.	Completely regular codes from regular spreads and linear SQS in Grassmann and Johnson graphs I. Yu. Mogil'nykh October 2, 2020 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 25, 2020 (Fri)*

22.	Determinants and spectra of multidimensional matrices and perfect colorings of hypergraphs A. A. Taranenko September 25, 2020 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*May 29, 2020 (Fri)*

23.	Transversals and diagonals of iterated groups and quasigroups of large arity A. A. Taranenko May 29, 2020 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*March 20, 2020 (Fri)*

24.	Coordinate transitivity of extended perfect codes and their SQS I. Yu. Mogil'nykh, F. I. Solov'eva March 20, 2020, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*November 29, 2019 (Fri)*

25.	Refinement of the asymptotic behavior of the number of transversals in iterated groups and quasigroups A. A. Taranenko November 29, 2019 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*November 1, 2019 (Fri)*

26.	On the XVI International Symposium “Problems of Redundancy in Information and Control Systems” V. N. Potapov November 1, 2019, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*October 19, 2018 (Fri)*

27.	Discussion October 19, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*October 12, 2018 (Fri)*

28.	MMS-type problems for Johnson scheme I. Yu. Mogil'nykh, K. V. Vorob'ev, A. A. Valyuzhenich October 12, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*October 5, 2018 (Fri)*

29.	On one recurrence relation for a geodesic flow in a magnetic field on a two-dimensional torus S. V. Agapov, A. A. Valyuzhenich October 5, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 28, 2018 (Fri)*

30.	Differentially 4-uniform 2-to-1 functions as subfunctions of APN-permutations V. A. Idrisova September 28, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*September 21, 2018 (Fri)*
	*Equitable partitions and completely regular codes*

31.	On the classification of the equitable partitions of the 12-cube with the quotient matrix [[0,12],[4,8]] D. S. Krotov September 21, 2018, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*August 3, 2018 (Fri)*

32.	The minimum supports of the (n-2)-eigenfunctions of the Star graph A. A. Valyuzhenich August 3, 2018, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*April 27, 2018 (Fri)*

33.	M.V. Kuznetsov. General solution of the evolution equation for a cellular automaton on a cubic lattice April 27, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*April 13, 2018 (Fri)*

34.	Perfect colorings of infinite multifold chains M. A. Lisitsyna April 13, 2018, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*April 6, 2018 (Fri)*

35.	Perfect 2-colorings of Hamming graphs with eigenvalue $\lambda_2$ A. A. Valyuzhenich, I. Yu. Mogil'nykh April 6, 2018, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*March 30, 2018 (Fri)*

36.	Some results on matrices that are extremal for existence of polyplex A. A. Taranenko March 30, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115


	*February 23, 2018 (Fri)*

37.	On equitable partitions of $q$-ary Hamming graphs K. V. Vorob'ev February 23, 2018 11:00, Novosibirsk, Sobolev Institute of Mathematics, room 115

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