New Foundations for Geometry: Two Non-Additive Languages for Arithmetical Geometry

New Foundations for Geometry: Two Non-Additive Languages for Arithmetical Geometry
Title New Foundations for Geometry: Two Non-Additive Languages for Arithmetical Geometry PDF eBook
Author Shai M. J. Haran
Publisher American Mathematical Soc.
Pages 216
Release 2017-02-20
Genre Mathematics
ISBN 147042312X

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To view the abstract go to http://www.ams.org/books/memo/1166.

New Foundations for Geometry

New Foundations for Geometry
Title New Foundations for Geometry PDF eBook
Author M. J. Shai Haran
Publisher
Pages 200
Release 2017
Genre Arithmetical algebraic geometry
ISBN 9781470436414

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Horizons of Fractal Geometry and Complex Dimensions

Horizons of Fractal Geometry and Complex Dimensions
Title Horizons of Fractal Geometry and Complex Dimensions PDF eBook
Author Robert G. Niemeyer
Publisher American Mathematical Soc.
Pages 320
Release 2019-06-26
Genre Mathematics
ISBN 1470435810

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This volume contains the proceedings of the 2016 Summer School on Fractal Geometry and Complex Dimensions, in celebration of Michel L. Lapidus's 60th birthday, held from June 21–29, 2016, at California Polytechnic State University, San Luis Obispo, California. The theme of the contributions is fractals and dynamics and content is split into four parts, centered around the following themes: Dimension gaps and the mass transfer principle, fractal strings and complex dimensions, Laplacians on fractal domains and SDEs with fractal noise, and aperiodic order (Delone sets and tilings).

Needle Decompositions in Riemannian Geometry

Needle Decompositions in Riemannian Geometry
Title Needle Decompositions in Riemannian Geometry PDF eBook
Author Bo’az Klartag
Publisher American Mathematical Soc.
Pages 90
Release 2017-09-25
Genre Mathematics
ISBN 1470425424

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The localization technique from convex geometry is generalized to the setting of Riemannian manifolds whose Ricci curvature is bounded from below. In a nutshell, the author's method is based on the following observation: When the Ricci curvature is non-negative, log-concave measures are obtained when conditioning the Riemannian volume measure with respect to a geodesic foliation that is orthogonal to the level sets of a Lipschitz function. The Monge mass transfer problem plays an important role in the author's analysis.

Nonsmooth Differential Geometry-An Approach Tailored for Spaces with Ricci Curvature Bounded from Below

Nonsmooth Differential Geometry-An Approach Tailored for Spaces with Ricci Curvature Bounded from Below
Title Nonsmooth Differential Geometry-An Approach Tailored for Spaces with Ricci Curvature Bounded from Below PDF eBook
Author Nicola Gigli
Publisher American Mathematical Soc.
Pages 174
Release 2018-02-23
Genre Mathematics
ISBN 1470427656

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The author discusses in which sense general metric measure spaces possess a first order differential structure. Building on this, spaces with Ricci curvature bounded from below a second order calculus can be developed, permitting the author to define Hessian, covariant/exterior derivatives and Ricci curvature.

Maximal Cohen-Macaulay Modules Over Non-Isolated Surface Singularities and Matrix Problems

Maximal Cohen-Macaulay Modules Over Non-Isolated Surface Singularities and Matrix Problems
Title Maximal Cohen-Macaulay Modules Over Non-Isolated Surface Singularities and Matrix Problems PDF eBook
Author Igor Burban
Publisher American Mathematical Soc.
Pages 134
Release 2017-07-13
Genre Mathematics
ISBN 1470425378

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In this article the authors develop a new method to deal with maximal Cohen–Macaulay modules over non–isolated surface singularities. In particular, they give a negative answer on an old question of Schreyer about surface singularities with only countably many indecomposable maximal Cohen–Macaulay modules. Next, the authors prove that the degenerate cusp singularities have tame Cohen–Macaulay representation type. The authors' approach is illustrated on the case of k as well as several other rings. This study of maximal Cohen–Macaulay modules over non–isolated singularities leads to a new class of problems of linear algebra, which the authors call representations of decorated bunches of chains. They prove that these matrix problems have tame representation type and describe the underlying canonical forms.

Applications of Polyfold Theory I: The Polyfolds of Gromov-Witten Theory

Applications of Polyfold Theory I: The Polyfolds of Gromov-Witten Theory
Title Applications of Polyfold Theory I: The Polyfolds of Gromov-Witten Theory PDF eBook
Author H. Hofer
Publisher American Mathematical Soc.
Pages 230
Release 2017-07-13
Genre Mathematics
ISBN 1470422034

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In this paper the authors start with the construction of the symplectic field theory (SFT). As a general theory of symplectic invariants, SFT has been outlined in Introduction to symplectic field theory (2000), by Y. Eliashberg, A. Givental and H. Hofer who have predicted its formal properties. The actual construction of SFT is a hard analytical problem which will be overcome be means of the polyfold theory due to the present authors. The current paper addresses a significant amount of the arising issues and the general theory will be completed in part II of this paper. To illustrate the polyfold theory the authors use the results of the present paper to describe an alternative construction of the Gromov-Witten invariants for general compact symplectic manifolds.