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Related papers: A classification of $S^3$-bundles over $S^4$

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In this paper, we give a definition of coherent tangent bundles of space form type, which is a generalized notion of space forms. Then, we classify their realizations in the sphere as a wave front, which is a generalization of a theorem of…

Differential Geometry · Mathematics 2015-08-31 Atsufumi Honda

We classify complete curvature homogeneous metrics on simply connected four dimensional manifolds which are invariant under a cohomogeneity one action. We show that they are either isometric to a symmetric space with one of its…

Differential Geometry · Mathematics 2020-10-20 Luigi Verdiani , Wolfgang Ziller

We give new homotopy theoretic criteria for deciding when a fibration with homotopy finite fibers admits a reduction to a fiber bundle with compact topological manifold fibers. The criteria lead to a new and unexpected result about…

Algebraic Topology · Mathematics 2014-02-26 John R. Klein , Bruce Williams

This article gives the construction and complete classification of all three-dimensional spherical manifolds, and orders them by decreasing volume, in the context of multiconnected universe models with positive spatial curvature. It…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Evelise Gausmann , Roland Lehoucq , Jean-Pierre Luminet , Jean-Philippe Uzan , Jeffrey Weeks

In the works of A. Ach\'ucarro and P. K. Townsend and also by E. Witten, a duality between three-dimensional Chern-Simons gauge theories and gravity was established. In all cases, the results made use of the field equations. In a previous…

High Energy Physics - Theory · Physics 2025-03-05 Thiago S. Assimos , Rodrigo F. Sobreiro

For any closed oriented surface F of genus at least three, we prove the existence of foliated F-bundles over surfaces such that the signatures of the total spaces are non-zero. We can arrange that the total holonomy of the horizontal…

Symplectic Geometry · Mathematics 2007-05-23 D. Kotschick , S. Morita

Stratifolds are considered from a categorical point of view. We show among others that the category of stratifolds fully faithfully embeds into the category of ${\mathbb R}$-algebras as does the category of smooth manifolds. We prove that a…

Category Theory · Mathematics 2017-03-23 Toshiki Aoki , Katsuhiko Kuribayashi

In these lecture notes we will try to give an introduction to the use of the mathematics of fibre bundles in the understanding of some global aspects of gauge theories, such as monopoles and instantons. They are primarily aimed at beginning…

High Energy Physics - Theory · Physics 2007-05-23 Andres Collinucci , Alexander Wijns

Usually bundle gerbes are considered as objects of a 2-groupoid, whose 1-morphisms, called stable isomorphisms, are all invertible. I introduce new 1-morphisms which include stable isomorphisms, trivializations and bundle gerbe modules.…

Category Theory · Mathematics 2007-06-13 Konrad Waldorf

The space of orientation-compatible almost complex structures on the six-dimensional sphere naturally contains a copy of seven-dimensional real projective space. We show that the inclusion induces an isomorphism on fundamental groups and…

Algebraic Topology · Mathematics 2021-08-03 Bora Ferlengez , Gustavo Granja , Aleksandar Milivojevic

A separable, proper morphism of varieties with geometrically connected fibers induces a homotopy exact sequence relating the \'etale fundamental groups of source, target and fiber. Extending work of dos Santos, we prove the existence of an…

Algebraic Geometry · Mathematics 2016-06-28 Giulia Battiston , Lars Kindler

A map between manifolds which matches up families of complete vector fields is a fiber bundle mapping on each orbit of those vector fields.

Differential Geometry · Mathematics 2010-09-29 Benjamin McKay

This paper is concerned with the holonomy of a class of spaces which includes Landsberg spaces of Finsler geometry. The methods used are those of Lie groupoids and algebroids as developed by Mackenzie. We prove a version of the…

Differential Geometry · Mathematics 2010-06-01 M. Crampin , D. J. Saunders

We explain the existence of a smooth $HP^2$-bundle over $S^4$ whose total space has nontrivial $\hat{A}$-genus. Combined with an argument going back to Hitchin, this answers a question of Schick and implies that the space of Riemannian…

Algebraic Topology · Mathematics 2022-02-10 Manuel Krannich , Alexander Kupers , Oscar Randal-Williams

We define the pull-back of a smooth principal fibre bundle, and show that it has a natural principal fibre bundle structure. Next, we analyse the relationship between pull-backs by homotopy equivalent maps. The main result of this article…

Differential Geometry · Mathematics 2007-05-23 Scott Morrison

\def\mon{S^3\stackrel{S^1}{\rightarrow}S^2} \def\inst{S^7\stackrel{S^3}{\rightarrow}S^4} \def\octo{S^{15}\stackrel{S^7}{\rightarrow}S^8} In semilocal theories, the vacuum manifold is fibered in a non-trivial way by the action of the gauge…

High Energy Physics - Theory · Physics 2016-09-06 Mark Hindmarsh , Richard Holman , Thomas W. Kephart , Tanmay Vachaspati

We generalize Kontsevich's construction of characteristic classes of fibre bundles with homology sphere fibres and a trivialization of the vertical tangent bundle to framed fibre bundles with closed manifold fibres.

Algebraic Topology · Mathematics 2025-05-08 Nils Prigge

This paper focuses on the study of a new category of vector bundles. The objects of this category, called chiral vector bundles, are pairs given by a complex vector bundle along with one of its automorphisms. We provide a classification for…

Mathematical Physics · Physics 2018-01-16 Giuseppe De Nittis , Kiyonori Gomi

Using geometric arguments, we compute the group of homotopy classes of maps from a closed $(n+1)$-dimensional manifold to the $n$-sphere for $n \geq 3$. Our work extends results from Kirby, Melvin and Teichner for closed oriented…

Geometric Topology · Mathematics 2025-10-15 Michael Jung , Thomas O. Rot

In this article, we compute all possible degrees of maps between $S^3$-bundles over $S^5$. It also provides a correction of an article by Lafont and Neofytidis.

Algebraic Topology · Mathematics 2018-10-25 Xueqi Wang