Hajime Tanaka

According to our database, Hajime Tanaka authored at least 18 papers between 2002 and 2022.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2022

Tight relative t-designs on two shells in hypercubes, and Hahn and Hermite polynomials.

Eiichi Bannai, Etsuko Bannai, Hajime Tanaka, Yan Zhu

Ars Math. Contemp., 2022

2020

The Terwilliger Algebra of the Twisted Grassmann Graph: the Thin Case.

Hajime Tanaka, Tao Wang

Electron. J. Comb., 2020

2019

The Independence Number of the Orthogonality Graph in Dimension 2^k.

Ferdinand Ihringer, Hajime Tanaka

Comb., 2019

2018

An Assmus-Mattson theorem for codes over commutative association schemes.

John Vincent S. Morales, Hajime Tanaka

Des. Codes Cryptogr., 2018

2017

A semidefinite programming approach to a cross-intersection problem with measures.

Sho Suda, Hajime Tanaka, Norihide Tokushige

Math. Program., 2017

Design Theory from the Viewpoint of Algebraic Combinatorics.

Eiichi Bannai, Etsuko Bannai, Hajime Tanaka, Yan Zhu

Graphs Comb., 2017

2016

Arithmetic completely regular codes.

Jacobus H. Koolen, Woo-Sun Lee, William J. Martin, Hajime Tanaka

Discret. Math. Theor. Comput. Sci., 2016

2015

On Relative $t$-Designs in Polynomial Association Schemes.

Eiichi Bannai, Etsuko Bannai, Sho Suda, Hajime Tanaka

Electron. J. Comb., 2015

2013

The Erdős-Ko-Rado basis for a Leonard system.

Hajime Tanaka

Contributions Discret. Math., 2013

2012

The Erdös-Ko-Rado theorem for twisted Grassmann graphs.

Hajime Tanaka

Comb., 2012

2011

Nonexistence of exceptional imprimitive Q-polynomial association schemes with six classes.

Hajime Tanaka, Rie Tanaka

Eur. J. Comb., 2011

Vertex Subsets with Minimal Width and Dual Width in <i>Q</i>-Polynomial Distance-Regular Graphs.

Hajime Tanaka

Electron. J. Comb., 2011

2009

Commutative association schemes.

William J. Martin, Hajime Tanaka

Eur. J. Comb., 2009

Finite Euclidean graphs and Ramanujan graphs.

Eiichi Bannai, Osamu Shimabukuro, Hajime Tanaka

Discret. Math., 2009

2006

Classification of subsets with minimal width and dual width in Grassmann, bilinear forms and dual polar graphs.

Hajime Tanaka

J. Comb. Theory, Ser. A, 2006

New upper bounds for nonbinary codes based on the Terwilliger algebra and semidefinite programming.

Dion Gijswijt, Alexander Schrijver, Hajime Tanaka

J. Comb. Theory, Ser. A, 2006

2004

Finite analogues of non-Euclidean spaces and Ramanujan graphs.

Eiichi Bannai, Osamu Shimabukuro, Hajime Tanaka

Eur. J. Comb., 2004

2002

A Four-Class Subscheme of the Association Scheme Coming from the Action ofPGL(2, 4_f).

Hajime Tanaka

Eur. J. Comb., 2002