平木彰

ヒラキアキラ (Akira Hiraki)

基本情報

所属: 大阪教育大学理数情報教育系教授

学位: (BLANK)(Osaka Kyoiku University)
修士(教育学)(大阪教育大学)
(BLANK)(Osaka University)
博士(理学)(大阪大学)

研究者番号: 90294181
J-GLOBAL ID: 200901064255237256
researchmap会員ID: 6000008567

研究キーワード

研究分野

経歴

2014年4月

大阪教育大学教育学部教授
2007年4月

大阪教育大学教育学部准教授

学歴

MISC

A Characterization of the Hamming Graphs and the Dual Polar Graphs by Completely Regular Subgraphs

Akira Hiraki

Graphs and Combinatorics 28(4) 449-467 2012年7月
Delsarte Set Graphs with Small c(2)

S. Bang, A. Hiraki, J. H. Koolen

GRAPHS AND COMBINATORICS 26(2) 147-162 2010年3月
A characterization of some distance-regular graphs by strongly closed subgraphs

Akira Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 30(4) 893-907 2009年5月
Distance-Regular Graph with c(2) > 1 and a(1)=0 < a(2)

Akira Hiraki

GRAPHS AND COMBINATORICS 25(1) 65-79 2009年5月
Strongly Closed Subgraphs in a Distance-Regular Graph with c (2) > 1

Akira Hiraki

GRAPHS AND COMBINATORICS 24(6) 537-550 2008年11月
A characterization of the Hamming graph by strongly closed subgraphs

Akira Hiraki

European Journal of Combinatorics 29(7) 1603-1616 2008年10月
Delsarte clique graphs

S. Bang, A. Hiraki, J. H. Koolen

EUROPEAN JOURNAL OF COMBINATORICS 28(2) 501-516 2007年2月
A characterization of the Odd graphs and the doubled Odd graphs with a few of their intersection numbers

Akira Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 28(1) 246-257 2007年1月
Improving diameter bounds for distance-regular graphs

European Journal of Combinatoric 27(1) 78-89 2006年
Applications of the retracing method for distance-regular graphs

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 26(5) 717-727 2005年7月
A generalization of an inequality of Brouwer-Wilbrink

A Hiraki, J Koolen

JOURNAL OF COMBINATORIAL THEORY SERIES A 109(1) 181-188 2005年1月
A note on regular near polygons

A Hiraki, J Koolen

GRAPHS AND COMBINATORICS 20(4) 485-497 2004年11月
The regular near polygons of order (s,2)

Journal of Algebraic Combinatorics 20(3) 219-235 2004年
A Higman-Haemers inequality for thick regular near polygons

20(3) 213-218 2004年
A distance-regular graph with bipartite geodetically closed subgraphs

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 24(4) 349-363 2003年5月
A characterization of the doubled Grassmann graphs, the doubled Odd graphs, and the Odd graphs by strongly closed subgraphs

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 24(2) 161-171 2003年2月
The number of columns (1,k-2,1) in the intersection array of a distance-regular graph

A Hiraki

GRAPHS AND COMBINATORICS 19(3) 371-387 2003年
An improvement of the Godil bound

Annals of Combinatorics 6 33-44 2002年査読有り
A distance-regular graph with strongly closed subgraphs

A Hiraki

JOURNAL OF ALGEBRAIC COMBINATORICS 14(2) 127-131 2001年9月
Retracing argument for distance-regular graphs

A Hiraki

JOURNAL OF COMBINATORIAL THEORY SERIES B 79(2) 211-220 2000年7月
Distance-regular graphs of valency 6 and a(1)=1

A Hiraki, K Nomura, H Suzuki

JOURNAL OF ALGEBRAIC COMBINATORICS 11(2) 101-134 2000年3月
Geodecically closed subgraphs in a distance-regular graph

Kyushu Journal of Mathematics 54 155--164 2000年査読有り
An application of a construction theory of strongly closed subgraphs in a distance-regular graph

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 20(4) 271-278 1999年5月
On the non existance of certain distance-regular graphs

Kyushu Journal of Mathematics 53 1--15 1999年査読有り
Distance-regular graphs of the height h

Akira Hiraki

Graphs and Combinatorics 15(4) 417-428 1999年
Strongly Closed Subgraphs in a Regular Thick Near Polygon

Akira Hiraki

European Journal of Combinatorics 20(8) 789-796 1999年
Distance-regular subgraphs in a distance-regular graph, VI

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 19(8) 953-965 1998年11月
Distance-regular subgraphs in a distance-regular graph, V

A Hiraki

EUROPEAN JOURNAL OF COMBINATORICS 19(2) 141-150 1998年2月
An Improvement of the Ivanov bound

Annals of Combinatiorics 2 131-135 1998年
Distance-regular graphs with b_d-i=c_i and antipodal double covers

Journal of algebraic Combinatorics 8 127-138 1998年査読有り
On distance-regular graphs with c₄ = 1 and a₁ ≠ a₂

Kyushu Journal of Mathematics 52 265--277 1998年
Distance-regular graphs with b_d-i=c_i and antipodal double covers

Journal of algebraic Combinatorics 8 127-138 1998年
Distance-regular graphs with b(2)=1 and antipodal covers

M Araya, A Hiraki, A Jurisic

EUROPEAN JOURNAL OF COMBINATORICS 18(3) 243-248 1997年4月
Distance-regular subgraphs in a distance-regular graph, III

European Journal of Combinatorics 17 629-636 1996年
Distance-regular graphs with b_t=1 and antipodal double-covers

Journal of Combinatorics Ser. B 67 278-248 1996年
A constant bound on the number of columns (1, k - 2, 1) in the intersection array of a distance-regular graph

Akira Hiraki

Graphs and Combinatorics 12(1) 23-37 1996年
Distance-regular subgraphs in a distance-regular graph, III

Akira Hiraki

European Journal of Combinatorics 17(7) 629-636 1996年
On distance-regular graphs with ki =kj, II

Akira Hiraki, Hiroshi Suzuki, Masayuki Wajima

Graphs and Combinatorics 11(4) 305-317 1995年12月
Distance-regular subgrayphs in a distance-regular graph II

European Journal of Combinatorics 16 603-615 1995年
Distance-regular subgrayphs in a distance-regular graph I

European Journal of Combinatorics 16 589-602 1995年査読有り
Circuit chasing technigue for a distance-regular graph with c_2r+1

Kyushu Journal of Mathmatics 49 197-219 1995年
An improvement of the Boshior-Namura Bound

Journal of Combinatorics Ser(B) 61 1-4 1994年査読有り
A CIRCUIT CHASING TECHNIQUE IN A DISTANCE-REGULAR GRAPH WITH TRIANGLES

A HIRAKI

EUROPEAN JOURNAL OF COMBINATORICS 14(5) 413-420 1993年9月
On distance-regular graphs with b₁=c_d-1

Mathmatica Japonica 37 751-756 1992年査読有り

所属学協会

日本数学会

共同研究・競争的資金等の研究課題

一覧へ戻る

平木 彰

基本情報

研究キーワード

研究分野

経歴

学歴

MISC

所属学協会

共同研究・競争的資金等の研究課題

平木彰