| Project/Area Number | 10640019 |
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Algebra
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| Research Institution | Graduate School of Mathematics, Nagoya University |
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Principal Investigator |
HAYASHI Takahiro Nagoya University, Graduate School of Mathematics, assistant professor, 大学院・多元数理科学研究科, 助教授 (60208618)
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| Co-Investigator(Kenkyū-buntansha) |
OKADA Soichi Nagoya University, Graduate School of Mathematics, Assistant professor, 大学院・多元数理科学研究科, 助教授 (20224016)
NAKANISHI Tomoki Nagoya University, Graduate School of Mathematics, Assistant professor, 大学院・多元数理科学研究科, 助教授 (80227842)
TSUCHIYA Akihiro Nagoya University, Graduate School of Mathematics, professor, 大学院・多元数理科学研究科, 教授 (90022673)
OHTA Hiroshi Nagoya University, Graduate School of Mathematics, Assistant professor, 大学院・多元数理科学研究科, 助教授 (50223839)
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| Project Period (FY) |
1998 – 2001
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| Project Status |
Completed(Fiscal Year 2001)
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| Budget Amount *help |
¥3,200,000 (Direct Cost : ¥3,200,000)
Fiscal Year 2001 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 2000 : ¥700,000 (Direct Cost : ¥700,000)
Fiscal Year 1999 : ¥800,000 (Direct Cost : ¥800,000)
Fiscal Year 1998 : ¥900,000 (Direct Cost : ¥900,000)
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| Keywords | quantum group / tensor category / Tannaka duality / classical invariant theory / inverse matrix / Littlewood-Richardson 則 / Littlewood-Richardson則 / 6j-symbol / 位相的場の量子論 |
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| Research Abstract |
For each finite split semisimple tensor category C, the canonical Tannaka duality gives a quantum group (face algebra) whose comodule category is equivalent to C. The duality gives a unified understanding of tensor categories arising from mathematics and physics, and also, it gives a new picture of the representation theory of the ordinary groups. By applying the duality and other techniques in the quantum group theory, we obtained the following results.
1. We showed that the quantum ej-symbo, is a sum of the partition functions of the ABF mode, of finite size. Also we gave a simple summation formula for the ordinary 6j-symbols.
2. By using the duality (or rather the canonical fiber functor), we constructed a bases for invariants and semiinvariants of binary quadratics and binary cubics.
3. For each tensor products of two irreducible representations of the general linear group, we gave their explicit irreducible decomposition at the module level.
4. We classified the braiding and th'e ribbon structure on each quantum classica, groups and the tensor category of type A of level L.
5. For each linearly reductive matrix group G, we give an "economical" inverse matrix formula for each elements of G.
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