The existence of the H and N + above, given N, is the Jacobson-Morosov theorem. For l ≧ 0, the primitive space is defined by Grl(W(N))prim = kerN l+1 :Grl(W(N)) → Gr−l−2(W(N)). It picks out the sl2-submodule whose highest weight is ...
Step two: By the Jacobson-Morosov theorem, N G m may be completed to an slo C m. Schmid selects the slo over R in the following manner. Lifting N(2) to JN(T) = exp(TN) : po and setting T = u + iv, v > 0, 102 CHAPTER IV.
Combines cutting-edge research and expository articles in Hodge theory. An essential reference for graduate students and researchers.
Mumford-Tate groups are the fundamental symmetry groups of Hodge theory, a subject which rests at the center of contemporary complex algebraic geometry. This book is the first comprehensive exploration of Mumford-Tate groups and domains.
... classification of the associated Mumford-Tate domains D. Although these domains and their quotients X = Γ\D by arithmetic groups arose as target spaces for period mappings P : S → X where S is a quasi-projective algebraic variety, ...
Organized around the basic concepts of variations of Hodge structure and period maps, this volume draws together new developments in deformation theory, mirror symmetry, Galois representations, iterated integrals, algebraic cycles and the ...
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