Open Seminar on Algebras, Combinatorics and Algorithms

since March 7, 2013.



Orgarnizer
[2013.03.07 - 2014.08.27] : Kyoung-Tark Kim, Jeong Rye Park
[2014.08.28 - 2015.08.18] : Jeong Rye Park, Semin Oh
[2015.08.19 - 2018.08.07] : Semin Oh, Seung-Jae Eom
[2018.08.08 - 2018.10.31] : Semin Oh
[2018.11.01 - now] : Jeong Rye Park, Semin Oh


Supporter
[2013.03.07 - now] : Mitsugu Hirasaka
[2018.06.01 - 2020.05.31] : Jeong Rye Park
[2020.06.01 - now] : Jeong Rye Park, Semin Oh


This seminar is always open. Anybody who has enthusiasm and curiosity for mathematics is very welcome.

Place : Building C32, Pusan National University, Busan, Republic of Korea.


The following are our history:
Order Date Speaker Title
1 March 7, 2013 Mitsugu Hirasaka The zeta functions of adjacency algebras
2 March 14, 2013 Kijung Kim The Schur rings and the Cayley graphs
3 March 21, 2013 Kyoung-Tark Kim Maximal tori over perfect fields I
4 March 28, 2013 Kyoung-Tark Kim Maximal tori over perfect fields II
5 April 4, 2013 Jeong-Rye Park On 4-equivalenced association schemes
6 April 18, 2013 Shun'ichi Yokoyama On Hecke algebra discriminant: an experiment
7 May 2, 2013 Semin Oh The number of nilpotent matrices over a finite field
8 May 9, 2013 Hyungrok Jo Semisimplicity of graphs over finite fields
9 June 13, 2013 Seung-Jae Eom Hamming schemes I
10 July 11, 2013 Seung-Jae Eom Hamming schemes II
11 July 25, 2013 Kyoung-Tark Kim Introduction to algebraic function fields
12 August 1, 2013 Mitsugu Hirasaka The zeta functions of adjacency algebras of digraph
13 September 12, 2013 Akihide Hanaki Standard modules of association schemes
14 September 26, 2013 Jun-Kyo Kim On the enumeration of circulant graphs of prime orders
15 October 10, 2013 Kyoung-Tark Kim Introduction to composition algebras I
16 October 17, 2013 Kyoung-Tark Kim Introduction to composition algebras II
17 October 24, 2013 Jeong Rye Park On pseudo-cyclic association scheme
18 October 31, 2013 Hyungrok Jo Fully homomorphic encryption over the integers I (preliminaries)
19 November 7, 2013 Hyungrok Jo Fully homomorphic encryption over the integers II
20 November 14, 2013 Hyonju Yu On distinguishing chromatic numbers
21 November 28, 2013 Seung-Jae Eom The structure of partial Hamming graphs
22 December 19, 2013 Daewa Kim Properties of 2-bridge link groups
23 January 16, 2014 Heejoung Kim Surface groups
24 February 13, 2014 Dae Hwan Kim Translating solitons foliated by spheres I
25 February 20, 2014 Dae Hwan Kim Translating solitons foliated by spheres II
26 March 21, 2014 Jeong Rye Park Graph coloring I
27 March 28, 2014 Jeong-Rye Park Graph coloring II
28 April 11, 2014 Hyonju Yu Complete regular codes in Hamming graphs
29 April 18, 2014 Semin Oh NP-copmleteness on the adaptably 2-colorable 3-uniform hypergraphs
30 May 2, 2014 Hyungrok Jo SVP, CVP and LLL algorithms
31 May 9, 2014 Mitsugu Hirasaka Some results on association schemes
32 May 16, 2014 Seung-Jae Eom On isometric dimensions and irreducible graphs
33 July 2, 2014 Kijung Kim Noncommutative \(p\)-Schur rings over groups of order \(p^3\)
34 July 9, 2014 Yewon Joung An introduction to invariants of surface-links via marked graph diagrams
35 July 23, 2014 Jeong Rye Park Planar graphs without cycles of length from 4 to 7 are 3-colorable
36 August 27, 2014 Jung-Rae Cho Decomposition of graphs into cycles of a fixed length
37 September 25, 2014 Dongsoo Lee The parity of virtual links
38 October 2, 2014 Semin Oh The color space of a graph
39 October 23, 2014 Sang-Hyup Seo Introducing for numerical linear algebra
40 November 6, 2014 Yeonji Kim Taylor iteration for finding a \(p\)th root of an \(M\)-matrix
41 November 13, 2014 Anna Park Mathematical modeling of inflammatory bowel disease
42 November 20, 2014 Han-Wool Lee Open Seminar (Introduction to the operator theory)
43 December 4, 2014 Seung-Jae Eom The isometric dimension of graphs
44 December 23, 2014 Semin Oh Zeta functions of quotients of the integer polynomial ring with rank two
45 January 13, 2015 Kwang-Su Kim How to control rumor with medium?
46 February 10, 2015 Kyoung-Tark Kim Hopf Algebras : A Basic Introduction
47 February 27, 2015 Masanobu Kaneko Two unsolved problems in number theory - the oldest and the greatest
48 April 16, 2015 Seung-A Lee An introduction to the theory of graph spectra - Ch.1
49 April 23, 2015 Seunghun Lee Colouring the Sphere with 4 colours
50 April 30, 2015 Hyungrok Jo On expander graphs & applications in cryptography
51 May 7, 2015 Seung-A Lee An introduction to the theory of graph spectra - Ch.1
52 May 14, 2015 Seung-Jae Eom Graphs and matrices - Ch.1
53 May 28, 2015 Eun-Kyung Cho Definitions and some relations of rings and their examples
54 June 4, 2015 Soohyun Park Bergman kernel estimates for some weighted Fock spaces
55 June 9, 2015 Alexander Gavrilyuk On a characterization of the Grassmann graphs \(J_p(2d,d)\)
56 June 25, 2015 Jeong Rye Park An introduction to the theory of graph spectra - Ch.1
57 July 2, 2015 Eun Taek Lee Introduction to quantum computer
58 July 23, 2015 Hyunil Choi How can we define the fractional radial derivative?
59 August 6, 2015 Seung-Jae Eom Graphs and matrices - Ch.2
60 August 13, 2015 Dae-Hyun Ha A note on the star chromatic number
61 August 18, 2015 Seonmi Choi On triviality of surface-knot
62 September 9, 2015 Seung Heon Yi Participation of 2015 ICIAM
63 September 23, 2015 Hanbin Kang Review:'A Course in Arithmetic' written by J. P. Serre
64 October 7, 2015 Kihwang Kwon Rubik cube with permutation and orientation
65 October 14, 2015 Semin Oh What I did at the last month in China
66 November 11, 2015 Semin Oh Abundant Numbers
67 November 25, 2015 Dae-Hyun Ha Star Chromatic Number of Fullerenes
68 November 28, 2015 Masashi Shinohara Distance sets on circles
69 December 2, 2015 Seung-Jae Eom Graphs and matrices - Ch.3
70 January 15, 2016 Shun'ichi Yokoyama SageMath Cloud: a guide tour [abstract]
71 January 30, 2016 Yuta Watanabe An algebra on projective geometry and the quantum affine algebra \(U_q(\widehat{\mathfrak{sl}}_2)\) [abstract]
72 January 30, 2016 Yan Zhu Tight relative t-designs in association schemes [abstract]
73 March 3, 2016 Mitsugu Hirasaka Triangles of a metric space
74 March 17, 2016 Jinsil Lee Heat Equations
75 April 28, 2016 Han Ul Kang Introduction to quaternion analysis and bicomplex number analysis
76 May 4, 2016 Jeong Rye Park Feasibility conditions for non-symmetric 3-class association schemes
77 May 16, 2016 Ilkyoo Choi Improper colorings of sparse graphs on surfaces [abstract]
78 May 26, 2016 Seungjai Lee The classification of finite simple groups
79 June 23, 2016 Semin Oh Association scheme all of whose symmetric fusions are integral
80 July 7, 2016 Semin Oh Pell's Equation
81 July 14, 2016 Yun-Jeong Kim On linear associative algebras corresponding to association schemes of partially balanced designs
82 July 21, 2016 Eun-Kyung Cho On a generalization of an abelian ring
83 August 11, 2016 Sotheara Veng Portfolio optimization under a multiscale stochastic volatility model
84 September 26, 2016 Jinsil Lee Application of fixed point theorem to fractional differential equation
85 October 10, 2016 Dae Hwan Kim Mean curvature flow
86 October 17, 2016 Seung-Jae Eom Token graphs
87 October 25, 2016 Alexander Mednykh Branched coverings of graphs and uniformization theory
88 December 26, 2016 Seunghyun Shin Nonexistence of some partial geometry
89 February 20, 2017 Semin Oh Demonstrations of finding finite groups all of whose symmetric fusion schemes are integral
90 April 4, 2017 Mingyu Ju On hyperbolic and CAT(0) groups
91 April 11, 2017 Hanwool Lee Fock-Sobolev space
92 April 20, 2017 Alexander Gavrilyuk Some recent results on (P and Q)-polynomial association schemes
93 May 2, 2017 Jan Kim Proof of the residual finiteness of two-generator groups
94 May 16, 2017 Suhyeon Jeong Knot invariants with exactly solvable models
95 May 23, 2017 Jie Meng The symmetric positive definite solution to a nonlinear matrix equation \(X^p = A + M^{T}(B + X^{-1})^{-1} M\)
96 July 6, 2017 Ilkyoo Choi The strong chromatic index of sparse graphs with large maximum degree
97 July 27, 2017 Jihyeon Lee The commmon CMC surfaces from the relation on the mean curvatures in \(\mathbb{R}^3\) and \(\mathbb{H}^3\)
98 August 8, 2017 Minki Kim The layer number of evenly distributed point sets
99 August 24, 2017 Koji Momihara Strongly regular Cayley graphs from two or three-valued Gauss periods
100 August 29, 2017 Hirasaka Mitsugu On the colored spaces with certain conditions
101 September 12, 2017 István Kovács Elementary abelian groups of rank 5 are DCI-groups
102 October 17, 2017 Wasim Abbas On 3-Absorbing Submodule
103 October 31, 2017 JongHyun Seo Process optimization of lavel printing
104 November 28, 2017 Daehwan Kim Helicoidal translating solitons for the mean curvature flow
105 January 2, 2018 Alexander Gavrilyuk Equitable partitions of Latin square graphs
106 March 19, 2018 Sung-Soo Pyo Identities Between Harmonic numbers, Hyperharmonic numbers and Daehee numbers
107 May 14, 2018 Minwon Na About RNN
108 May 28, 2018 Jae-Baek Lee Recolouring Problems
109 June 11, 2018 Sooa Song On three ways of produce translation equivalent elements on a free group
110 June 12, 2018 Sergey Goryainov Deza graphs with parameters \((n,k,k-1,a)\) and \(\beta = 1\)
111 July 9, 2018 Eun-Kyung Cho On graphs entropy and its applications
112 August 9, 2018 Jae Young Yang On the order of regular graphs with fixed second largest eigenvalue
113 August 23, 2018 Suda Sho Conference matrices with maximal excess
114 September 7, 2018 Hong Liu Counting problems on sets of integers with various constraints
115 October 4, 2018 Jack Koolen On the order of regular graphs with fixed second largest eigenvalue
116 October 5, 2018 Jack Koolen On the integrability of strongly regular graphs
117 October 10, 2018 Hyungrok Jo LPS-type Ramanujan graphs
117 October 10, 2018 Vladislav V. Kabanov Young Tableaux and Eigenfunctions of the Star Graphs
118 October 15, 2018 Vladislav V. Kabanov Deza graphs with parameters \((n,k,k-1,a)\) and \(\beta = 1\)
119 January 12, 2019 Misha Muzychuk Wallis - Fon der Flaass construction of strongly regular graphs and related objects
120 January 15, 2019 Stefan Gyurki On directed strongly regular graphs
121 February 8, 2019 Kyoung-Tark Kim The geometry of \(S(U(1) \times U(1)) \backslash SU(1,1)\)
121 February 8, 2019 Dae Hwan Kim Properties of solitons for the inverse mean curvature flow
122 February 15, 2019 Rui Yang Analysis of singular weights in one-dimensional Minkowski-curvature problems
123 March 5, 2019 Jae Young Yang On graphs with smallest eigenvalue -3 and their lattices
124 April 8, 2019 Wei-Hsuan Yu Recent progress on equiangular lines