Geodesic
A Note on Lagrangian Loci of Quotients
Canadian mathematical bulletin, Tome 48 (2005) no. 4, pp. 561-575

Voir la notice de l'article provenant de la source Cambridge University Press

We study Hamiltonian actions of compact groups in the presence of compatible involutions. We show that the Lagrangian fixed point set on the symplectically reduced space is isomorphic to the disjoint union of the involutively reduced spaces corresponding to involutions on the group strongly inner to the given one. Our techniques imply that the solution to the eigenvalues of a sum problem for a given real form can be reduced to the quasi-split real form in the same inner class. We also consider invariant quotients with respect to the corresponding real form of the complexified group.
DOI : 10.4153/CMB-2005-051-6
Mots-clés : 53D20, Quotients, involutions, real forms, Lagrangian loci 
Foth, Philip. A Note on Lagrangian Loci of Quotients. Canadian mathematical bulletin, Tome 48 (2005) no. 4, pp. 561-575. doi: 10.4153/CMB-2005-051-6
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