منابع مشابه
Periodic maps of composite order on positive definite 4–manifolds
The possibilities for new or unusual kinds of topological, locally linear periodic maps of non-prime order on closed, simply connected 4–manifolds with positive definite intersection pairings are explored. On the one hand, certain permutation representations on homology are ruled out under appropriate hypotheses. On the other hand, an interesting homologically nontrivial, pseudofree, action of ...
متن کاملSmooth Group Actions on Definite 4 - Manifolds and Moduli Spaces
In this paper we give an application of equivariant moduli spaces to the study of smooth group actions on certain 4-manifolds. A rich source of examples for such actions is the collection of algebraic surfaces (compact and nonsingular) together with their groups of algebraic automorphisms. From this collection, further examples of smooth but generally nonalgebraic actions can be constructed by ...
متن کاملDirac Operator Coupled to Instantons on Positive Definite 4 Manifolds
We study the moduli space of instantons on a simply connected positive definite four manifold by analyzing the classifying map of the index bundle of a family of Dirac operators parametrized by the moduli space. As applications we compute the cohomology ring for the charge 2 moduli space in the rank stable limit.
متن کاملRank Stable Instantons over Positive Definite Four Manifolds
We study the moduli space of rank stable based instantons over a connected sum of q copies of CP. For c2 = 1 we give the homotopy type of the moduli space. For c2 = 2 we compute the cohomology of the moduli space.
متن کاملSUPERVISED SEMI−DEFINITE EMBEDING FOR IMAGE MANIFOLDS (WedPmPO1)
Semi−definite Embedding (SDE) is a recently proposed to maximize the sum of pair wise squared distances between outputs while the input data and outputs are locally isometric, i.e. it pulls the outputs as far apart as possible, subject to unfolding a manifold without any furling or fold for unsupervised nonlinear dimensionality reduction. The extensions of SDE to supervised feature extraction, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Differential Geometry
سال: 1988
ISSN: 0022-040X
DOI: 10.4310/jdg/1214442163