研究者情報 - 西山　享 | 青山学院大学

ニシヤマ　キョウ NISHIYAMA Kyo
西山　享

所属

青山学院大学理工学部数理サイエンス学科

職種教授

研究業績（招待講演）
1.	2023/06/20	Quiver representations and double flag varieties (IUC, クロアチア，ドブロブニク)
2.	2022/10/07	Hecke module structure on the orbits in double flag varieties (IUC, クロアチア，ドブロブニク)
3.	2022/07/07	Hecke algebra actions on a double flag variety (シンガポール)
4.	2021/09	二重旗多様体上の軌道とヘッケ環の表現 (zoom（オンライン）)
5.	2019/10/16	Robinson-Schensted Correspondence for Symmetric Pairs of Hermitian Tube Type (Research Center for Mathematics and Interdisciplinary Sciences, Shandong University, Qingdao China)
6.	2019/06/25	Steinberg theory for symmetric pairs (Inter-University Centre, Dubrovnik, Croatia)
7.	2019/01/15	Robinson-Schensted Correspondence and Flag Varieties (Max Planck Institute Informatik)
8.	2018/12/18	Fourier transform of zeta integrals over enhanced positive cone (TSIMF Tsinghua Sanya International Mathematics Forum, Sanya, China)
9.	2018/07/11	Fourier transform of the Riesz distribution on enhanced symmetric cone (Czech Technical University in Prague, Czech Republic)
10.	2018/06/18	Functional equation of an enhanced zeta distribution (Department of Mathematics, Faculty of Science Room 201, Zagreb Univ.)
11.	2017/06/22	Integral kernel operators for degenerate principal series (IUC, Dubrovnik, Croati)
12.	2017/06/07	Integral kernel operators on tube domain associated with relative invariants (Chern Institute of Mathematics, Nankai University)
13.	2016/12/05	Intertwiners Between Degenerate Principal Series Arising From a Double Flag Variety (Tsinghua Sanya International Mathematics Forum (TSIMF), Sanya, Hainan, China)
14.	2016/08/24	Intertwiners associated to a double flag variety over reals (Aarhus University)
15.	2016/03/18	Conormal variety on exotic Grassmannian (IMS, NUS, Singapore)
16.	2015/12/11	Exotic Grassmannian and its nilpotent variety (Tian He Hotel, Chongmin Island, Shanghai, China)
17.	2015/06/26	Orbit embedding for enhanced Lie algebra (IUC, Dubrovnik, Croatia)
18.	2014/12/09	Double flag variety and its nilpotent con (Tongji University, Shanghai, China)
19.	2014/06/06	Exotic nilpotent cone for mirabolic double flag variety (Chern Institute of Mathematics, Nankai University)
20.	2014/01/23	Conormal variety over double flag varieties and exotic nilpotent cone (Mathematisches Forschungsinstitut Oberwolfach)
21.	2013/07/08	On K-spherical flag varieties (Univ. of Utah USA)
22.	2013/03/05	Double flag varieties and spherical actions (Univ. of Haifa　 Israel)
23.	2012/07/17	Orbit graphs of associated varieties (Uniｖ.Massachusetts Boston USA)
24.	2012/06/07	On orbit graph of harish-Chandra modules (南開大　天津　中国)
25.	2012/03/16	Multiple flag varieties and spherical actions (NUS Singapore)
26.	2011/09/01	Double flag varieties for symmetric pairs (MPI Lecture Hall 　ボン　ドイツ)
27.	2011/06/23	Finiteness of orbits on double flag varieties for symmetric pairs (IUC Dubrovnik Croatia)
28.	2011/01/27	Multiple flag varieties of finite type for symmetric pairs (NUS Singapore)
29.	2010/06/08	Steinberg　variety and moment maps over multiple flag varieties Ⅰ,Ⅱ (南開大　天津　中国)
30.	2010/03/03	Colloquium　talk ： Multiple flag varities and spherical actions (Univ.Zagreb　Croatia)
31.	2010/03/01	Seminar talk 1,2　　Steinberg variety and moment maps 1,2（3/1,3/4） (Univ.Zagreb Croatia)
32.	2009/06/08	Geometry of frag varieties and moment maps 1,2,3 (南開大　天津　中国)
33.	2008/08/11	Symmetric pair and orbits on the flag variety I-VI　(8/11-19) (NCTS　台北　台湾)
34.	2008/07/01	Asymptotic cone of semisimple orbit for symmetric pairs (IUC Dubrovnik Croatia)
35.	2008/01/26	Introduction to the geometry of Kc-orbits on the flag varieties and nilpotent orbits I, II (1/26,29) (NCTS　台北　台湾)
36.	2007/10/09	Resolution of null fibers and closed orbits on partial flag varieties (Univ.Roma　ローマ　イタリア)
37.	2007/09/27	Representations of reductive groups and invariant theory/Affine quotients and the Correspondence of orbits　(9/27,29) (Belgaum　カルナータカ　インド)
38.	2007/09/14	Capelli identities for Hermitian symmetric spaces
39.	2007/08/21	Degenerate principal series and the asymptotic cone of semisimple orbits
40.	2007/08/06	Resolution of null fiber and conormal bundles over Lagrangian Grassmannian
41.	2007/06/18	Nilpotent Orbits and Associated Cycles for Unitary Highest Weight Representations 3-6 (6/18-20) (陳省身研究所　南開大学　天津　中国)
42.	2007/06/02	Richardson orbits for symmetric pair and degenerate principal series (日本)
43.	2006/11/16	零錐の特異点解消と退化主系列表現 (日本)
44.	2006/09/13	Resolution of the null fiber and conormal bundles of closed orbits on a flag variety (IRMA　ストラスブール　フランス)
45.	2005/03/30	表現の不変量と冪零軌道 (日本)
46.	2004/08/12	Harmonic polynomials and highest weight modules －theta lifting, branching rules and Capelli identity－ (Univ.of southern Denmark 　デンマーク)
47.	2004/02/03	Theta lifting of unitary lowest weight representations and their associated cycles (オーベルヴォルファッハ数学研究所　　ドイツ)
48.	2003/09/16	Lifting of nilpotent orbits and equivariant coherent sheaves (日本学術振興会・ドイツ学術振興会(DFG）　ドイツ)
49.	2003/01/08	Lifting of Covariants for Nilpotent Orbits (NUS　シンガポール)
50.	2002/08/07	Theta lifting, affine quotients, and degree formula for highest weight modules I,II (8/7,14) (NUS　シンガポール)
51.	2001/07/04	Spherical nilpotent orbits for symmetric pairs (Zhoushan(船山）　中国)
52.	2000/08/09	Theta lifting of representations and geometry of nilpotent orbits (日本)
53.	2000/03/20	On the geometry of nilpotent orbits (NUS　シンガポール)
54.	1999/09/23	Multiplicity-free action on a null cone and geometry of nilpotent orbit
55.	1998/07/20	Bernstein Degree and Characteristic Cycles (UTA USA)
56.	1997/07/31	Schur duality for Cartan type Lie algebra W_n and transformation semigroup T_m (岡山市林原財団セミナーハウス)
57.	1996/09/30	Weyl-Schur duality for Cartan-type Lie algebras (ottawa大学　カナダ)
58.	1995/10/04	Commutant algebra and harmonic polynomials of Cartan type Lie (super)algebras (T\"{u}bingen　ドイツ)
59.	1995/09/26	On an invariant of left cells of Weyl groups (Strasbourg　フランス)
60.	1993/11	P₊-homologies of Cartan type Lie algebras (東京大学)
61.	1992/07	微分作用素によるリー環の表現の実現
62.	1988/11/26	B(n, m) 及びD(n, m) 型のLie superalgebraの表現
63.	1987/04/02	半単純Lie 群の指標加群とWeyl 群およびそのHecke 環の表現
64.	1986/08	半単純Lie 群の既約表現の指標多項式とGelfand-Kirillov 次元 (滋賀県堅田市)