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Naive boundary strata and nilpotent orbits. (Limites de strates naïves et orbites nilpotentes.) (English. French summary) Zbl 1327.14056
Summary: We give a Hodge-theoretic parametrization of certain real Lie group orbits in the compact dual of a Mumford-Tate domain, and characterize the orbits which contain a naive limit Hodge filtration. A series of examples are worked out for the groups $$\mathrm{SU}(2, 1)$$, $$\mathrm{Sp}_4$$, and $$G_2$$.

##### MSC:
 14D07 Variation of Hodge structures (algebro-geometric aspects) 32G20 Period matrices, variation of Hodge structure; degenerations 17B45 Lie algebras of linear algebraic groups 20G99 Linear algebraic groups and related topics 32M10 Homogeneous complex manifolds
##### Software:
Atlas of Lie Groups
Full Text:
##### References:
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