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Related papers: On 4-dimensional smooth Poincare conjecture

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We prove the Tate conjecture for integral degree 4 classes on a smooth cubic hypersurface X of dimension 4 over an algebraic closure of a field finitely generated over its prime subfield.

Algebraic Geometry · Mathematics 2019-02-20 François Charles , Alena Pirutka

In this paper we provide a sharp characterization of the smooth four-dimensional sphere. The assumptions of the theorem are conformally invariant, and can be reduced to an L^2 inequality of the Weyl tensor and positivity of the Yamabe…

Differential Geometry · Mathematics 2007-05-23 S. Y. A Chang , Matthew J. Gursky , Paul Yang

We prove a version of Poincar\'e's polyhedron theorem whose requirements are as local as possible. New techniques such as the use of discrete groupoids of isometries are introduced. The theorem may have a wide range of applications and can…

Geometric Topology · Mathematics 2020-01-27 Sasha Anan'in , Carlos H. Grossi , Júlio C. C. da Silva

This note gives a new elementary proof of Poincar\'e-Miranda theorem based on Sard's theorem and the simple classification of one-dimensional manifolds.

General Topology · Mathematics 2025-11-11 Xiao-Song Yang

We prove a Poincare type inequality for differential forms on compact manifolds by means of a constructive 'globalization' of a local Poincare inequality on convex sets.

Differential Geometry · Mathematics 2010-10-19 Leonid Shartser

In this paper, we proved the normal scalar curvature conjecture and the Bottcher-Wenzel conjecture.

Differential Geometry · Mathematics 2007-11-26 Zhiqin Lu

A trisection of a smooth, closed, oriented 4-manifold is a decomposition into three 4-dimensional 1-handlebodies meeting pairwise in 3-dimensional 1-handlebodies, with triple intersection a closed surface. The fundamental groups of the…

Geometric Topology · Mathematics 2018-03-28 Aaron Abrams , David T. Gay , Robion Kirby

We give a concise proof of the fundamental theorem of smoothing theory in the special case when a smoothing exists.

Algebraic Topology · Mathematics 2010-07-09 John R. Klein , Bruce Williams

This article is a first step in establishing a link between the Donaldson polynomials and Seiberg-Witten invariants of a smooth 4-manifold.

dg-ga · Mathematics 2008-02-03 Victor Pidstrigach , Andrei Tyurin

We outline a simple proof of PC without surgeries using the homogeneous flow introduced in [O].

General Mathematics · Mathematics 2021-03-12 Ercüment Ortaçgil

We prove a four dimensional version of the Bernstein Theorem, with complex polynomials being replaced by quaternionic polynomials. We deduce from the theorem a quaternionic Bernstein's inequality and give a formulation of this last result…

Complex Variables · Mathematics 2023-03-15 Alessandro Perotti

There are many four vertex type theorems appearing in the literature, coming in both smooth and discrete flavors. The most familiar of these is the classical theorem in differential geometry, which states that the curvature function of a…

Metric Geometry · Mathematics 2023-02-09 Wiktor Mogilski , Kyle Grant

The aim of the work is to prove the following main theorem. Theorem. Let M3 be a three-dimensional, connected, simple-connected, closed, compact, smooth manifold. Tnen the manifold M3 is diffeomorphic to the three-dimensional sphere.

General Mathematics · Mathematics 2008-07-09 Alexander A. Ermolitski

In this note we give a p-adic proof of Hodge symmetry for smooth, projective threefolds over complex numbers.

Algebraic Geometry · Mathematics 2013-06-14 Kirti Joshi

A classification theorem for 4-dimensional conformally flat QK3-manifolds is proved.

Differential Geometry · Mathematics 2010-01-26 Ognian T. Kassabov

We offer an approach to the smooth 4-dimensional Schoenflies conjecture via pseudo-isotopy theory.

Geometric Topology · Mathematics 2024-05-30 David Gabai

Motivated by the Poincare conjecture, we study properties of digital n-dimensional spheres and disks, which are digital models of their continuous counterparts. We introduce homeomorphic transformations of digital manifolds, which retain…

Discrete Mathematics · Computer Science 2007-05-23 Alexander V. Evako

In this paper, we prove a conjecture of Schnell in the surface case.

Algebraic Geometry · Mathematics 2024-02-27 Jun Lu , Wan-Yuan Xu

This paper proves that any compact, closed, simply connected and connected three dimensional stellar manifold is stellar equivalent to the three dimensional sphere.

General Mathematics · Mathematics 2007-05-23 Sergey Nikitin

We prove the termination of 4-fold canonical flips.

Algebraic Geometry · Mathematics 2007-05-23 Osamu Fujino