Masao Ishikawa
Professor of Mathematics,
University of the Ryukyus
Recent Publications
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Masao Ishikawa, Masahiko Ito and Soichi Okada,
"A compound determinant of Cauchy-Sylvester type",
preprint (April 24, 2008 version).
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Takahiro Hayata and Masao Ishikawa
"An elementary proof of a binomial-coefficient identity arising from the middle discrete series of SU(2,2)",
preprint (April 24, 2008 version), arXiv:0804.3841.
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Masao Ishikawa,
"On Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions II",
math.CO/0606082.
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Masao Ishikawa, Anisse Kasraoui and Jiang Zeng ,
"Statistics on Ordered Partitions of Sets and q-Stirling Numbers",
math.CO/0605390,
SIAM J. Discrete Math. 22 (2008), pp. 1105 - 1137.
a detailed version.
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Masao Ishikawa,
"On Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions I",
math.CO/0602068.
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Masao Ishikawa and Jiang Zeng,
"The Andrews-Stanley Partition Function and Al-Salam-Chihara Polynomials",
math.CO/0506128,
Descrete Math. 309 (2009), pp. 151 - 175.
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Masao Ishikawa,
"Minor summation formula and a proof of Stanley's open problem",
math.CO/0408204,
Ramanujan J. 16 (2008), pp. 211 - 234.
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Masao Ishikawa, Hiroyuki Tagawa, Soichi Okada and Jiang Zeng,
"Generalizations of Cuachy's determinant and Schur's Pfaffian",
math.CO/0411280,
Adv. in Appl. Math. 36, (2006) 251 - 287.
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M. Ishikawa, F. Jouhet and J. Zeng,
"A generalization of Kawanaka's identity for Hall-Littlewood polynomials and applications",
math.CO/0401252,
J. Algebraic Combin. 23, (2006) 395 - 412.
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Masao Ishikawa and Masato Wakayama,
"Applications of Minor Summation Formula III, Plucker Relations, Lattice Paths and Pfaffian Identities",
math.CO/0312358,
J. Combin. Theory Ser. A. 113, (2006) 113-155.
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Masao Ishikawa, Hiroyuki Kawamuko and Soichi Okada,
"A Pfaffian-Hafnian analogue of Borchardt's identity",
math.CO/0408364,
Electron. J. Combin. 12(1), (2005) #N9.
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Manabu, Hagiwara, Masao Ishikawa and Hiroyuki Tagawa,
"A Characterization of the Simply-Laced FC-Finite Coxeter Groups",
Ann. Comb. 8, (2004) 177-196.
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Masao Ishikawa and Hiroyuki Tagawa,
"Determinants and Pfaffians associated with d-complete posets",
Topics in Young diagrams and representation theory,
Surikaisekikenkyusho 1262, (2002) 101-136
(in Japanese).
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Masao Ishikawa and Masato Wakayama,
"Minor Summation Formulas of Pfaffians, Survey and A New Identity",
Adv. Stud. Pure Math. 28, (2000) 133-142.
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Masao Ishikawa and Masato Wakayama,
"Application of Minor-Summation Formula II.
Pfaffians and Schur Polynimials'' ,
J. Combin. Theory Ser. A 88, (1999), 136-157.
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Masao Ishikawa and Masato Wakayama,
"New Scur Function Series",
J. Algebra 208 (1998), 480-525.
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Masao Ishikawa, Soichi Okada and Masato Wakayama,
"Application of Minor-Summation Formula I.
Littlewood's Formulas"
,
J. Algebra 183 (1996), 193-216.
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Masao Ishikawa and Masato Wakayama,
"Minor Summation Formula of Pfaffians",
Linear and Multilinear Algebra 39, (1995), 285-296.
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Masao Ishikawa and Masato Wakayama,
"Minor Summation of Pfaffians and Scur Function Identities",
Proc. Japan Acad. Ser. A Math. Sci. 71 (1995), 54-57 A3.
Recent Conference Proceedings
- Masao Ishikawa,
"Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions and Lattice Path Combinatorics",
6TH INTERNATIONAL CONFERENCE ON LATTICE PATH COMBINATORICS AND APPLICATIONS
ETSU, Johnson City, TN, United States
July 12 - 14, 2007.
- Masao Ishikawa,
"Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions and Constant Term Identities",
The 19th International Conference on Formal Power Series and Algebraic Combinatorics
Nankai University, Tianjin, China
July 2 - 6, 2007.
- Masao Ishikawa and Hiroyuki Tagawa,
"Schur Function Identities and Hook Length Posets",
The 19th International Conference on Formal Power Series and Algebraic Combinatorics
Nankai University, Tianjin, China
July 2 - 6, 2007.
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Masao Ishikawa,
"The Andrews-Stanley Partition Function and Al-Salam-Chihara Polynomials",
18th International Conference on Formal Power Series & Algebraic Combinatorics.
San Diego, California, USA; June 19 - 23, 2006
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Masao Ishikawa, Hiroyuki Tagawa, Soichi Okada and Jiang Zeng,
"Generalizations of Cuachy's determinant and Schur's Pfaffian",
17th Annual Conference on Formal Power Series and Algebraic Combinatorics.
Taormina, Sicily, Italy; 20--25 June 2005
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Masao Ishikawa,
"A proof of Stanley's open problem",
17th Annual Conference on Formal Power Series and Algebraic Combinatorics.
Taormina, Sicily, Italy; 20--25 June 2005
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Manabu, Hagiwara, Masao Ishikawa and Hiroyuki Tagawa,
"A characterization of the simply-Laced FC-finite Coxeter groups",
16-th International Conference on
Formal Power Series and Algebraic Combinatorics,
University of British Columbia, (Vancouver, Canada)
June 28 - July 2, 2004.
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Masao Ishikawa,
"Minor summation formula of Pfaffians and Schur function identities",
7-th International Conference
on Formal Power Series and Algebraic Combinatorics,
extended abstract (1995), 379-386.
Recent Talks
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Masao Ishikawa
Enumeration problems of plane partitions and determinant generating functions,
Expansion of Combinatorial Representation Theory,
Octorber 7 -- 10, 2008,
RIMS, Kyoto University, Kyoto Japan.
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Masao Ishikawa
Enumeration problems of plane partitions and Pfaffian (determinant) expressions,
Combinatorics and Representation Theory,
(The 8th International Conference by the Graduate School of Mathematics, Nagoya University)
September 1 - 5, 2008,
Graduate School of Mathematics, Nagoya University, Nagoya, Japan.
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Masao Ishikawa
Littlewoodfs (Cauchyfs) formulae of Schur functions
and constant term expressions for the refined enumeration problems of TSSCPPs,
Combinatorics and Statistical Physics,
May 16 - 30, 2008,
ESI, Vienna, Austria.
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Masao Ishikawa
An Identity for Compound Determinant and its Application,
Korea Advanced Institute of Science and Technology,
Februay 22, 2008.
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Masao Ishikawa
Hankel determinants of Catalan, Motzkin and Schroder numbers and its q-analogues,
Expansion of Combinatorial Representation Theory, RIMS, Kyoto University, Kyoto, Japan,
October 23 - 26, 2007.
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Masao Ishikawa
Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions and Lattice Path Combinatorics,
6th International Conference on Lattice Path Combinatorics and Applications
East Tennessee State University, Johnson City, TN, United States,
July 13, 2007.
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Masao Ishikawa
Refined Enumerations of Totally Symmetric Self-Complementary Plane Partitions and Constant Term Identities,
The 19th International Conference on Formal Power Series and Algebraic Combinatorics
(Contributed Papers)
Nankai University, Tianjin, China,
July 2, 2007.
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Masao Ishikawa and Hiroyuki Tagawa
Schur Function Identities and Hook Length Posets,
The 19th International Conference on Formal Power Series and Algebraic Combinatorics
(Contributed Posters)
Nankai University, Tianjin, China,
July 2 - 6, 2007.
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Masao Ishikawa, Anisse Kasraoui and Jiang Zeng ,
"Euler-Mahonian Statistics of Ordered Partitions",
Combinatorial Representation Theory and Related Topics,
October 24 - 27, 2006, RIMS, University of Kyoto,
organized by Takeshi Suzuki and Toshiyuki Tanisaki.
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Masao Ishikawa and Jiang Zeng
The Andrews-Stanley partition function and Al-Salam-Chihara polynomials,
18th International Conference on Formal Power Series & Algebraic Combinatorics
(Contributed Posters)
June 19-23, 2006, San Diego, California,
Catamaran Resort Hotel, Pacific Beach, USA
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"Minor summation formula of Pfaffians and Mills-Robbins-Rumsey conjectures on totally symmetric self-complementary plane partitions",
Department of Mathematics, Ryukyu University
February 16, 2006
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The refinements of TSSCPP enumeration,
Workshop of Combinatorics on q-Series and Partitions
(January 5-6, 2006, Institute of Camille Jordan, University of Lyon I)
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Several refined conjectures on TSSCPP and ASM,
The World of Combinatorial Representation Theory
(November 8-11, 2005, RIMS, Kyoto University)
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Andrews-Stanley partition function and the orthogonal polynomials,
KISS2005 (Kasai Integrable Systems Seminar)
Octorber 21, 2005, 15:00 - 16:30, Nakmura Laboratory, Kyoto University
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Minor summation formula of Pfaffains and its applications,
July 3-4, 2005,
Department of Mathematics, Okayama University
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A Proof of Stanley's Open Problem,
17th Annual International Conference on Formal Power Series and Algebraic Combinatorics
(June 20 - 25, 2005 - Taormina, Sicily - Italy)
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Minor summation formula and a proof of Stanley's open problem,
Combinatoire et Theorie des Nombres
(March 25, 2005, Institute of Camille Jordan, University of Lyon I)
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On Refined TSSCPP Conjectures,
December 10, 2004,
Department of Mathematics, Osaka University
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An open problem of R. P. Stanley on a sum of Schur functions,
Conference on Partially Ordered Sets and Algorithms
August 23-25, 2004,
Tokai University, Takanawa Campus
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