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Lie Groups and Representation Theory
Seminar information archive ～04/19｜Next seminar｜Future seminars 04/20～
| Date, time & place | Tuesday 16:30 - 18:00 126Room #126 (Graduate School of Math. Sci. Bldg.) |
|---|
2013/10/29
16:30-18:00 Room #126 (Graduate School of Math. Sci. Bldg.)
Yuichiro Tanaka (the University of Tokyo, Graduate School of Mathematical Sciences)
Geometry of multiplicity-free representations of SO(N) and visible actions (JAPANESE)
Yuichiro Tanaka (the University of Tokyo, Graduate School of Mathematical Sciences)
Geometry of multiplicity-free representations of SO(N) and visible actions (JAPANESE)
[ Abstract ]
For a connected compact simple Lie group of type B or D,
we find pairs $(V_{1},V_{2})$ of irreducible representations of G such that the tensor product representation $V_{1}¥otimes V_{2}$ is multiplicity-free by a geometric consideration based on
a notion of visible actions on complex manifolds,
introduced by T. Kobayashi. The pairs we find exhaust
all the multiplicity-free pairs by an earlier
combinatorial classification due to Stembridge.
For a connected compact simple Lie group of type B or D,
we find pairs $(V_{1},V_{2})$ of irreducible representations of G such that the tensor product representation $V_{1}¥otimes V_{2}$ is multiplicity-free by a geometric consideration based on
a notion of visible actions on complex manifolds,
introduced by T. Kobayashi. The pairs we find exhaust
all the multiplicity-free pairs by an earlier
combinatorial classification due to Stembridge.
