Compact Connected Lie Transformation Groups On Spheres With Low Cohomogeneity Ii PDF Download
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| Author | : Eldar Straume |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 90 |
| Release | : 1997 |
| Genre | : Mathematics |
| ISBN | : 0821804839 |
Download Compact Connected Lie Transformation Groups on Spheres with Low Cohomogeneity. II Book in PDF, ePub and Kindle
The cohomogeneity of a transformation group ([italic capitals]G, X) is, by definition, the dimension of its orbit space, [italic]c = dim [italic capitals]X, G. We are concerned with the classification of differentiable compact connected Lie transformation groups on (homology) spheres, with [italic]c [less than or equal to symbol] 2, and the main results are summarized in five theorems, A, B, C, D, and E in part I. This paper is part II of the project, and addresses theorems D and E. D examines the orthogonal model from theorem A and orbit structures, while theorem E addresses the existence of "exotic" [italic capital]G-spheres.
| Author | : Eldar Straume |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 106 |
| Release | : 1996 |
| Genre | : Mathematics |
| ISBN | : 082180409X |
Download Compact Connected Lie Transformation Groups on Spheres with Low Cohomogeneity, I Book in PDF, ePub and Kindle
The cohomogeneity of a transformation group ([italic capitals]G, X) is, by definition, the dimension of its orbit space, [italic]c = dim [italic capitals]X, G. By enlarging this simple numerical invariant, but suitably restricted, one gradually increases the complexity of orbit structures of transformation groups. This is a natural program for classical space forms, which traditionally constitute the first canonical family of testing spaces, due to their unique combination of topological simplicity and abundance in varieties of compact differentiable transformation groups.
| Author | : Eldar Straume |
| Publisher | : |
| Total Pages | : 93 |
| Release | : 1996 |
| Genre | : Homology theory |
| ISBN | : 9781470401481 |
Download Compact Connected Lie Transformation Groups on Spheres with Low Cohomogeneity, I Book in PDF, ePub and Kindle
| Author | : Eldar Straume |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 108 |
| Release | : 1996-02-05 |
| Genre | : Mathematics |
| ISBN | : 9780821862926 |
Download Compact Connected Lie Transformation Groups on Spheres with Low Cohomogeneity, I Book in PDF, ePub and Kindle
In the study of Lie transformation groups on classical space forms, one of the most exciting features is the existence of nonlinear or ``exotic'' actions. Among the many unsolved problems, the classification of G-spheres with 2-dimensional orbit space has a prominent place. The main purpose of this monograph is to describe the beginnings of a program to the complete solution of this problem. One major feature of the author's approach is the effectiveness of the geometric weight system, which was introduced by Wu-Yi Hsiang around 1970, as a book-keeping method for orbit structural data. Features: Complete tables of compact connected linear groups of cohomogeneity $< 3$. Geometric weight systems techniques. Complete classification of G-spheres of cohomogeneity one. Weight classification of G-spheres of cohomogeneity two, the crucial step of the complete classification for cohomogeneity two.
| Author | : Eldar Straume |
| Publisher | : |
| Total Pages | : 93 |
| Release | : 1996 |
| Genre | : |
| ISBN | : |
Download I Compact Connected lie Transformation Groups on Spheres with low Cohomogeneity Book in PDF, ePub and Kindle
| Author | : Mikhail Borovoi |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 65 |
| Release | : 1998 |
| Genre | : Mathematics |
| ISBN | : 0821806505 |
Download Abelian Galois Cohomology of Reductive Groups Book in PDF, ePub and Kindle
In this volume, a new function H 2/ab (K, G) of abelian Galois cohomology is introduced from the category of connected reductive groups G over a field K of characteristic 0 to the category of abelian groups. The abelian Galois cohomology and the abelianization map ab1: H1 (K, G) -- H 2/ab (K, G) are used to give a functorial, almost explicit description of the usual Galois cohomology set H1 (K, G) when K is a number field
| Author | : Percy Deift |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 233 |
| Release | : 1998 |
| Genre | : Mathematics |
| ISBN | : 0821806912 |
Download A Continuum Limit of the Toda Lattice Book in PDF, ePub and Kindle
In this book, the authors describe a continuum limit of the Toda ODE system, obtained by taking as initial data for the finite lattice successively finer discretizations of two smooth functions. Using the integrability of the finite Toda lattice, the authors adapt the method introduced by Lax and Levermore for the study of the small dispersion limit of the Korteweg de Vries equations to the case of the Toda lattice. A general class of initial data is considered which permits, in particular, the formation of shocks. A feature of the analysis in this book is an extensive use of techniques from the theory of Riemann-Hilbert problems.
| Author | : Paul Bourdon |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 122 |
| Release | : 1997 |
| Genre | : Mathematics |
| ISBN | : 0821806300 |
Download Cyclic Phenomena for Composition Operators Book in PDF, ePub and Kindle
We undertake a systematic study of cyclic phenomena for composition operators. Our work shows that composition operators exhibit strikingly diverse types of cyclic behavior, and it connects this behavior with classical problems involving complex polynomial approximation and analytic functional equations.
| Author | : Ragnar-Olaf Buchweitz |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 111 |
| Release | : 1997 |
| Genre | : Mathematics |
| ISBN | : 082180541X |
Download CR-Geometry and Deformations of Isolated Singularities Book in PDF, ePub and Kindle
In this power we show how to compute the parameter space [italic capital]X for the versal deformation of an isolated singularity ([italic capital]V, 0) under the assumptions [italic]dim [italic capital]V [greater than or equal to symbol] 4, depth {0} [italic capital]V [greater than or equal to symbol] 3, from the CR-structure on a link [italic capital]M of the singularity. We do this by showing that the space [italic capital]X is isomorphic to the space (denoted here by [script capital]K[subscript italic capital]M) associated to [italic capital]M by Kuranishi in 1977. In fact we produce isomorphisms of the associated complete local rings by producing quasi-isomorphisms of the controlling differential graded Lie algebras for the corresponding formal deformation theories.
| Author | : George Xian-Zhi Yuan |
| Publisher | : American Mathematical Soc. |
| Total Pages | : 157 |
| Release | : 1998 |
| Genre | : Mathematics |
| ISBN | : 0821807471 |
Download The Study of Minimax Inequalities and Applications to Economies and Variational Inequalities Book in PDF, ePub and Kindle
This book provides a unified treatment for the study of the existence of equilibria of abstract economics in topological vector spaces from the viewpoint of Ky Fan minimax inequalities, which strongly depend on his infinite dimensional version of the classical Knaster, Kuratowski and Mazurkiewicz Lemma (KKM Lemma) in 1961. Studied are applications of general system versions of minimax inequalities and generalized quasi-variational inequalities, and random abstract economies and its applications to the system of random quasi-variational inequalities are given.
