Akihiro Munemasa

Publication Activity (10 Years)

Years Active: 1986-2024
Publications (10 Years): 21

Top Topics

Dimensional Euclidean Space

Covariance Matrix

Monadic Datalog

Eigenvalues And Eigenvectors

Top Venues

Des. Codes Cryptogr.

Finite Fields Their Appl.

Publications

Akihiro Munemasa, Rowena Alma L. Betty
Classification of extremal type II $\mathbb {Z}_4$-codes of length 24. Des. Codes Cryptogr. 92 (3) (2024)
Madoka Awada, Tsuyoshi Miezaki, Akihiro Munemasa, Hiroyuki Nakasora
A note on t-designs in isodual codes. Finite Fields Their Appl. 95 (2024)
Tsuyoshi Miezaki, Akihiro Munemasa
Jacobi polynomials and harmonic weight enumerators of the first-order Reed-Muller codes and the extended Hamming codes. Des. Codes Cryptogr. 92 (4) (2024)
Madoka Awada, Tsuyoshi Miezaki, Akihiro Munemasa, Hiroyuki Nakasora
A note on t-designs in isodual codes. CoRR (2023)
Akihiro Munemasa, Vladimir D. Tonchev
Quasi-symmetric 2-(41, 9, 9) designs and doubly even self-dual codes of length 40. Appl. Algebra Eng. Commun. Comput. 33 (6) (2022)
Jack H. Koolen, Akihiro Munemasa, Atsuhiro Nakamoto, Katsuhiro Ota, Akira Saito
Preface to the special issue dedicated to Professors Eiichi Bannai and Hikoe Enomoto on their 75th birthdays. Graphs Comb. 37 (5) (2021)
Tsuyoshi Miezaki, Akihiro Munemasa, Hiroyuki Nakasora
A note on Assmus-Mattson type theorems. Des. Codes Cryptogr. 89 (5) (2021)
Alexander L. Gavrilyuk, Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Signed analogue of line graphs and their smallest eigenvalues. J. Graph Theory 98 (2) (2021)
Mengyue Cao, Jack H. Koolen, Akihiro Munemasa, Kiyoto Yoshino
Maximality of Seidel matrices and switching roots of graphs. Graphs Comb. 37 (5) (2021)
Takuya Ikuta, Akihiro Munemasa
Complex Hadamard Matrices Attached to a 3-Class Nonsymmetric Association Scheme. Graphs Comb. 35 (6) (2019)
Cunsheng Ding, Akihiro Munemasa, Vladimir D. Tonchev
Bent Vectorial Functions, Codes and Designs. IEEE Trans. Inf. Theory 65 (11) (2019)
Rowena Alma L. Betty, Akihiro Munemasa
. IMACC (2019)
Stefka Bouyuklieva, Masaaki Harada, Akihiro Munemasa
Nonexistence of Certain Singly Even Self-Dual Codes with Minimal Shadow. Electron. J. Comb. 25 (1) (2018)
Masaaki Harada, Akihiro Munemasa
On s-extremal singly even self-dual [24k + 8, 12k + 4, 4k + 2] codes. Finite Fields Their Appl. 48 (2017)
Gary R. W. Greaves, Akihiro Munemasa, Anni Peng
On a Lower Bound for the Laplacian Eigenvalues of a Graph. Graphs Comb. 33 (6) (2017)
Akihiro Munemasa
Godsil-McKay switching and twisted Grassmann graphs. Des. Codes Cryptogr. 84 (1-2) (2017)
Masaaki Harada, Akihiro Munemasa
Some restrictions on weight enumerators of singly even self-dual codes II. CoRR (2017)
Masaaki Harada, Akihiro Munemasa
On the classification of self-dual [20, 10, 9] codes over GF(7). Finite Fields Their Appl. 42 (2016)
Akihiro Munemasa, Hiroko Nakamura
A Note on the Brawley-Carlitz Theorem on Irreducibility of Composed Products of Polynomials over Finite Fields. WAIFI (2016)
Gary R. W. Greaves, Jacobus H. Koolen, Akihiro Munemasa, Ferenc Szöllösi
Equiangular lines in Euclidean spaces. J. Comb. Theory, Ser. A 138 (2016)
Gary R. W. Greaves, Jack H. Koolen, Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Edge-signed graphs with smallest eigenvalue greater than -2. J. Comb. Theory, Ser. B 110 (2015)
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Fat Hoffman graphs with smallest eigenvalue at least -1 - τ. Ars Math. Contemp. 7 (1) (2014)
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Fat Hoffman graphs with smallest eigenvalue greater than -3. Discret. Appl. Math. 176 (2014)
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
On the smallest eigenvalues of the line graphs of some trees. CoRR (2014)
Hye Jin Jang, Jack H. Koolen, Akihiro Munemasa, Tetsuji Taniguchi
On fat Hoffman graphs with smallest eigenvalue at least -3. Ars Math. Contemp. 7 (1) (2014)
Koichi Betsumiya, Masaaki Harada, Akihiro Munemasa
A Complete Classification of Doubly Even Self-dual Codes of Length 40. Electron. J. Comb. 19 (3) (2012)
Koichi Betsumiya, Akihiro Munemasa
On triply even binary codes. J. Lond. Math. Soc. 86 (1) (2012)
Akihiro Munemasa, Hiroki Tamura
The codes and the lattices of Hadamard matrices. Eur. J. Comb. 33 (4) (2012)
Takuya Ikuta, Akihiro Munemasa
Nomura algebras of nonsymmetric Hadamard models. Des. Codes Cryptogr. 65 (1-2) (2012)
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Fat Hoffman graphs with smallest eigenvalue greater than -3 CoRR (2012)
Masaaki Harada, Akihiro Munemasa
Classification of self-dual codes of length 36. Adv. Math. Commun. 6 (2) (2012)
Masaaki Harada, Akihiro Munemasa
Classification of Quaternary Hermitian Self-Dual Codes of Length 20. IEEE Trans. Inf. Theory 57 (6) (2011)
Akihiro Munemasa, Yoshio Sano, Tetsuji Taniguchi
Fat Hoffman graphs with smallest eigenvalue at least $-1-τ$. CoRR (2011)
Aleksandar Jurisic, Akihiro Munemasa, Yuki Tagami
On graphs with complete multipartite µ-graphs. Discret. Math. 310 (12) (2010)
Masaaki Harada, Akihiro Munemasa
Classification of quaternary Hermitian self-dual codes of length 20 CoRR (2010)
Masaaki Harada, Clement W. H. Lam, Akihiro Munemasa, Vladimir D. Tonchev
and Quaternary Hermitian Self-Dual Codes of Length 18. Electron. J. Comb. 17 (1) (2010)
Takuya Ikuta, Akihiro Munemasa
Pseudocyclic association schemes and strongly regular graphs. Eur. J. Comb. 31 (6) (2010)
Masaaki Harada, Akihiro Munemasa
Classification of self-dual codes of length 36 CoRR (2010)
Koichi Betsumiya, Rowena Alma L. Betty, Akihiro Munemasa
Mass Formula for Even Codes over. IMACC (2009)
Masaaki Harada, Akihiro Munemasa
{{\mathbb F}_5}. Des. Codes Cryptogr. 52 (1) (2009)
Masaaki Harada, Akihiro Munemasa
A complete classification of ternary self-dual codes of length 24. J. Comb. Theory, Ser. A 116 (5) (2009)
Tatsuro Ito, Alexandre A. Ivanov, Akihiro Munemasa
Preface. Eur. J. Comb. 30 (3) (2009)
Masaaki Harada, Akihiro Munemasa
On the Classification of Self-dual -Codes. IMACC (2009)
Masaaki Harada, Akihiro Munemasa, Boris Venkov
Classification of ternary extremal self-dual codes of length 28. Math. Comput. 78 (267) (2009)
Stefka Bouyuklieva, Masaaki Harada, Akihiro Munemasa
Determination of weight enumerators of binary extremal self-dual [42, 21, 8] codes. Finite Fields Their Appl. 14 (1) (2008)
Masaaki Harada, Akihiro Munemasa
There exists no self-dual [24,12,10] code over F5 CoRR (2008)
Akihiro Munemasa, Takuya Ikuta
A new example of non-amorphous association schemes. Contributions Discret. Math. 3 (2) (2008)
Akihiro Munemasa, Masanori Sawa
Simple abelian quadruple systems. J. Comb. Theory, Ser. A 114 (6) (2007)
Masaaki Harada, Akihiro Munemasa
On the covering radii of extremal doubly even self-dual codes. Adv. Math. Commun. 1 (2) (2007)
Masaaki Harada, Akihiro Munemasa
Some restrictions on weight enumerators of singly even self-dual codes. IEEE Trans. Inf. Theory 52 (3) (2006)
Ryoh Fuji-Hara, Akihiro Munemasa, Vladimir D. Tonchev
Hyperplane partitions and difference systems of sets. J. Comb. Theory, Ser. A 113 (8) (2006)
Masaaki Harada, Masaaki Kitazume, Akihiro Munemasa, Boris Venkov
On some self-dual codes and unimodular lattices in dimension 48. Eur. J. Comb. 26 (5) (2005)
Masaaki Harada, Masaaki Kitazume, Akihiro Munemasa
On a 5-design related to an extremal doubly even self-dual code of length 72. J. Comb. Theory, Ser. A 107 (1) (2004)
Akihiro Munemasa, Gabriele Nebe, Patrick Solé
Arithme'tique et Combinatoire. Eur. J. Comb. 25 (4) (2004)
Akihiro Munemasa, Vladimir D. Tonchev
A new quasi-symmetric 2-(56, 16, 6) design obtained from codes. Discret. Math. 284 (1-3) (2004)
Akihiro Munemasa
Spherical 5-designs obtained from finite unitary groups. Eur. J. Comb. 25 (2) (2004)
Masaaki Harada, Akihiro Munemasa, Kenichiro Tanabe
Extremal self-dual [40, 20, 8] codes with covering radius 7. Finite Fields Their Appl. 10 (2) (2004)
Eiichi Bannai, Akihiro Munemasa, Sung-Yell Song, Paul M. Terwilliger
Preface. Discret. Math. 264 (1-3) (2003)
D. Brozovic, Chat Yin Ho, Akihiro Munemasa
A Correction to "Incidence Matrices and Collineations of Finite Projective Planes" by Chat Yin Ho, Designs, Codes and Cryptography, 18 (1999). Des. Codes Cryptogr. 25 (1) (2002)
Koichi Betsumiya, T. Aaron Gulliver, Masaaki Harada, Akihiro Munemasa
. IEEE Trans. Inf. Theory 47 (6) (2001)
Koichi Betsumiya, Masaaki Harada, Akihiro Munemasa
. AAECC (2001)
Steven T. Dougherty, Philippe Gaborit, Masaaki Harada, Akihiro Munemasa, Patrick Solé
Type IV self-dual codes over rings. IEEE Trans. Inf. Theory 45 (7) (1999)
Akihiro Munemasa
On Perfect t-Shift Codes in Abelian Groups. Des. Codes Cryptogr. 5 (3) (1995)
Tatsuro Ito, Akihiro Munemasa, Mieko Yamada
Amorphous Association Schemes over the Galois Rings of Characteristic 4. Eur. J. Comb. 12 (6) (1991)
Takuya Ikuta, Tatsuro Ito, Akihiro Munemasa
On Pseudo-automorphisms and Fusions of an Association Scheme. Eur. J. Comb. 12 (4) (1991)
Akihiro Munemasa
-polynomial association schemes. J. Comb. Theory, Ser. B 51 (2) (1991)
Akihiro Munemasa
Splitting fields of association schemes. J. Comb. Theory, Ser. A 57 (1) (1991)
Akihiro Munemasa
-Designs in the association schemes of alternating bilinear forms. Graphs Comb. 2 (1) (1986)