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We study conformal actions of connected nilpotent Lie groups on compact pseudo-Riemannian manifolds. We prove that if a type-(p,q) compact manifold M supports a conformal action of a connected nilpo...
Let be a compact orientable surface with genus g andnboundary components ∂1,..., ∂n. Let b = (b1,...,bn) ∈ [−2,2] n. Then the mapping class group Mod() acts on the relative SU(2)-...
Let E denote an a±ne space modelled on Minkowski (2+1)-space E and let ¡ be a group of isometries whose linear part L(¡) is a purely hyperbolic subgroup of SO0 (2;1). Margulis has deˉned ...
Abstract: Given a positive and unitarily invariant Lagrangian L defined in the algebra of Hermitian matrices, and a fixed interval $[a,b]\subset\mathbb R$, we study the action defined in the Lie group...
We produce for each natural number n  3 two 1–parameter fam-ilies of Riemann surfaces admitting automorphism groups with two cyclic sub-groups H1 and H2 of orden 2n, that are conjugate in the group o...
A group G acts infinitely transitively on a set Y if for every positive integer m, its action is m-transitive on Y . Given a real affine algebraic variety Y of dimension greater than or equal to 2, ...
We produce $p$-harmonic morphisms by conformal foliations and Clifford systems. First, we give a useful criterion for a foliation on an $m$-dimensional Riemannian manifold locally generated by conform...
期刊信息 篇名 Parent Actions, Dualities and New Weyl-invariant Actions of Bosonic p-branes 语种 英文 撰写或编译 撰写 作者 Y.-G. Miao and N. Ohta 第一作者单位 Osaka University 刊物名称 J. High Energy Phys. 04 (2003) 010 页面 出版日期 20...
Talk given at Harvard, January 1999, published in the Proceedings of the Harvard Winter School on mirror symmetry, vector bundles and lagrangian cycles, 1999, International Press. Surveys the joint wo...
We defined an equivalence among group actions and find sufficient conditions for actions of compact connected Lie groups on Euclidean spaces for which the topological version of the Borel-Hirzebruch f...

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