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Related papers: Polyfolds: A First and Second Look

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The main topic is the development of a Fredholm theory in a new class of spaces called M-polyfolds. In the subsequent Volume II the theory will be generalized to an even larger class of spaces called polyfolds, which can also incorporate…

Functional Analysis · Mathematics 2014-07-14 Helmut H. Hofer , Kris Wysocki , Eduard Zehnder

We survey a very general (nonlinear) Fredholm theory for a new class of ambient spaces, called polyfolds. This theory is being currently developed jointly with K. Wysocki and E. Zehnder. The basic feature of these new spaces is that in…

Symplectic Geometry · Mathematics 2008-09-23 Helmut Hofer

Work of Hofer--Wysocki--Zehnder has shown that many spaces of pseudoholomorphic curves that arise when studying symplectic manifolds may be described as the zero set of a polyfold Fredholm section. This framework has many analytic…

Symplectic Geometry · Mathematics 2024-06-24 Dusa McDuff , Katrin Wehrheim

This is the first paper in a series introducing a generalized Fredholm theory in a new class of smooth spaces called polyfolds. The theory will be illustrated in upcoming papers by applications to Floer Theory, Gromov-Witten Theory and…

Functional Analysis · Mathematics 2007-06-13 Helmut Hofer , Kris Wysocki , Eduard Zehnder

We construct counterexamples to classical calculus facts such as the Inverse and Implicit Function Theorems in Scale Calculus -- a generalization of Multivariable Calculus to infinite dimensional vector spaces in which the…

Symplectic Geometry · Mathematics 2022-07-06 Benjamin Filippenko , Zhengyi Zhou , Katrin Wehrheim

We re-prove Gromov's non-squeezing theorem by applying Polyfold Theory to a simple Gromov-Witten moduli space. Thus we demonstrate how to utilize the work of Hofer-Wysocki-Zehnder to give proofs involving moduli spaces of pseudoholomorphic…

Symplectic Geometry · Mathematics 2020-10-15 Franziska Beckschulte , Ipsita Datta , Irene Seifert , Anna-Maria Vocke , Katrin Wehrheim

This survey wants to give a short introduction to the transversality problem in symplectic field theory and motivate to approach it using the new Fredholm theory by Hofer, Wysocki and Zehnder. With this it should serve as a lead-in for the…

Symplectic Geometry · Mathematics 2010-03-22 Oliver Fabert

Polyfold theory, as developed by Hofer, Wysocki, and Zehnder, is a relatively new approach to resolving transversality issues that arise in the study of $J$-holomorphic curves in symplectic geometry. This approach has recently led to a…

Symplectic Geometry · Mathematics 2020-01-01 Wolfgang Schmaltz

We survey a (nonlinear) Fredholm theory for a new class of ambient spaces called polyfolds, and develop the analytical foundations for some of the applications of the theory. The basic feature of these new spaces, which can be finite and…

Functional Analysis · Mathematics 2010-02-19 Helmut Hofer , Kris Wysocki , Eduard Zehnder

The Steenrod problem for closed orientable manifolds was solved completely by Thom. Following this approach, we solve the Steenrod problem for closed orientable orbifolds, proving that the rational homology groups of a closed orientable…

Symplectic Geometry · Mathematics 2020-12-17 Wolfgang Schmaltz

Round fold maps are smooth maps on closed manifolds which are locally represented as the product maps of Morse functions and identity maps on open disks and whose singularity is realized as concentrically embedded spheres. The author…

Algebraic Topology · Mathematics 2022-07-21 Naoki Kitazawa

We describe a very general (nonlinear) Fredholm theory for a new class of ambient spaces, called polyfolds. The basic feature of these new spaces is that in general they may have locally varying dimensions. These new spaces are needed for a…

Functional Analysis · Mathematics 2008-10-07 Helmut Hofer , Kris Wysocki , Eduard Zehnder

Graph manifolds form important classes of $3$-dimensional closed and orientable manifolds. For example, {\it Seifert} manifolds are graph manifolds where hyperbolic manifolds are not. In applying singularity theory of differentiable maps to…

Geometric Topology · Mathematics 2022-08-16 Naoki Kitazawa

We give a new self-contained proof of Poincar\'e's Polyhedron Theorem on presentations of discontinuous groups of isometries of a Riemann manifold of constant curvature. The proof is not based on the theory of covering spaces, but only…

Group Theory · Mathematics 2015-04-30 Eric Jespers , Ann Kiefer , Ángel del Río

We describe a (nonlinear) Fredholm theory for a new class of ambient spaces, as well as for a certain type of categories. The theory is illustrated by an application to the category of stable maps.

Symplectic Geometry · Mathematics 2014-12-16 Helmut H. W. Hofer

We describe a very general (nonlinear) Fredholm theory for a new class of ambient spaces, called polyfolds. This theory is applicable to Gromov-Witten and Floer Theory as well as Symplectic Field Theory. It should also be applicable to a…

Symplectic Geometry · Mathematics 2007-05-23 Helmut H. Hofer

Poincar\'e's Polyhedron Theorem is a widely known valuable tool in constructing manifolds endowed with a prescribed geometric structure. It is one of the few criteria providing discreteness of groups of isometries. This work contains a…

Geometric Topology · Mathematics 2011-08-01 Sasha Anan'in , Carlos H. Grossi

This is one in a series of papers devoted to the foundations of Symplectic Field Theory sketched in [Y Eliashberg, A Givental and H Hofer, Introduction to Symplectic Field Theory, Geom. Funct. Anal. Special Volume, Part II (2000) 560--673].…

Symplectic Geometry · Mathematics 2014-11-11 F Bourgeois , Y Eliashberg , H Hofer , K Wysocki , E Zehnder

This is a chapter (planned to appear in Wiley's upcoming Encyclopedia of Operations Research and Management Science) describing parts of the theory of convex polyhedra that are particularly important for optimization. The topics include…

Combinatorics · Mathematics 2010-01-14 Volker Kaibel

Mixed volumes in $n$-dimensional Euclidean space are functionals of $n$-tuples of convex bodies $K,L,C_1,\ldots,C_{n-2}$. The Alexandrov--Fenchel inequalities are fundamental inequalities between mixed volumes of convex bodies. As very…

Metric Geometry · Mathematics 2023-10-02 Daniel Hug , Paul A. Reichert
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