Real and complex nilpotent orbits
have received considerable attention in the literature. The former have been
studied in a variety of contexts, including differential geometry, symplectic
geometry, and Hodge theory. Also, there has been some interest in concrete descriptions of the poset structure on real nilpotent orbits in specific cases. By contrast, complex nilpotent orbits are
studied in algebraic geometry and representation theory — in particular,
Springer Theory.
Attention has also been given to
the interplay between real and complex nilpotent orbits, with the
Kostant-Sekiguchi Correspondence being perhaps the most famous instance.
Accordingly, the present article provides additional points of comparison between real and complex nilpotent orbits. Specifically, let g be a
finite-dimensional semisimple real Lie algebra with complexification g Each
real nilpotent orbit.
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