منابع مشابه
Algebraic Diffeomorphisms of Real Rational Surfaces and Weighted Blow-up Singularities
Let X be a real rational surface having only weighted blowup singularities. Denote by Diffalg(X) the group of algebraic automorphisms or algebraic diffeomorphisms of X into itself. Let n be a natural integer and let e = [e1, . . . , el] be a partition of n. Denote by X e the set of l-tuples (P1, . . . , Pl) of distinct nonsingular infinitely near points of X of orders (e1, . . . , el). We show ...
متن کاملCircle Diffeomorphisms: Quasi-reducibility and Commuting Diffeomorphisms
In this article, we show two related results on circle diffeomorphisms. The first result is on quasi-reducibility: for a Baire-dense set of α, for any diffeomorphism f of rotation number α, it is possible to accumulate Rα with a sequence hn f h−1 n , hn being a diffeomorphism. The second result is: for a Baire-dense set of α, given two commuting diffeomorphisms f and g, such that f has α for ro...
متن کاملOn the apparition of singularities of vector fields transported by volume preserving diffeomorphisms
We consider possible generation of singularities of a vector field transported by diffeomorphisms with derivatives of uniformly bounded determinants. A particular case of volume preserving diffeomrphism is the most important, since it has direct applications to the incompressible, inviscid hydrodynamics. We find relations between the directions of the vector field and the eigenvectors of the de...
متن کاملRings of Singularities
This paper is a slightly revised version of an introduction into singularity theory corresponding to a series of lectures given at the ``Advanced School and Conference on homological and geometrical methods in representation theory'' at the International Centre for Theoretical Physics (ICTP), Miramare - Trieste, Italy, 11-29 January 2010. We show how to associate to a triple of posit...
متن کاملConformal diffeomorphisms and curvatures
In a study of Riemannian manifolds admitting conformal transformation, the Riemannian and Ricci curvatures play an important role for characterizations and classify such a manifold. In this note, we summarize known results about Riemannian manifold admitting conformal transformations and related topics.
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: ICCM notices
سال: 2022
ISSN: ['2326-4810', '2326-4845']
DOI: https://doi.org/10.4310/iccm.2022.v10.n1.a6