来就得意
发表于 2025-3-23 11:57:31
On the Hopf Conjecture with Symmetry,r the assumption that a torus of sufficiently large dimension acts by isometries. This improves previous results by replacing linear bounds by a logarithmic bound. The new method that is introduced is the use of Steenrod squares combined with geometric arguments of a similar type to what was done before.
somnambulism
发表于 2025-3-23 16:42:14
https://doi.org/10.1007/978-3-319-06373-753C21;57S25;53C23;58A15;58A20; 22Exx;22Fxx,53Cxx;; Cohomogeneity one action; Lie group action; Non-negat
Flounder
发表于 2025-3-23 19:09:07
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incarcerate
发表于 2025-3-24 00:00:11
Einführung in die pharmazeutische Chemiemetry rank, that is, on a positively curved sphere, lens space, complex or real projective space, is equivariantly diffeomorphic to a linear action. We show that a compact, simply connected Riemannian 4- or 5-manifold of quasipositive curvature and maximal symmetry rank must be diffeomorphic to the
乞丐
发表于 2025-3-24 02:26:02
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宿醉
发表于 2025-3-24 10:14:24
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deriver
发表于 2025-3-24 12:38:15
Einführung in die physiologische Optik this introduction we construct the contact systems on several kinds of jet bundles in order to reduce general partial differential equations to exterior differential systems. Moreover we discuss the algebraic properties of the Spencer cohomology associated to an exterior differential system and ske
有效
发表于 2025-3-24 15:39:02
Geometry of Manifolds with Non-negative Sectional CurvatureEditors: Rafael Herr
conservative
发表于 2025-3-24 19:00:18
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进步
发表于 2025-3-24 23:26:27
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