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We give a characterisation of functors whose induced functor on the level of localisations is an equivalence and where the isomorphism inverse is induced by some kind of replacements such as projective resolutions or cofibrant replacements.

Category Theory · Mathematics 2018-10-11 Sebastian Thomas

This paper is a continuation of our previous paper, Co-Seifert fibrations of compact flat orbifolds, in which we developed the theory for classifying geometric fibrations of compact, connected, flat $n$-orbifolds, over a 1-orbifold, up to…

Geometric Topology · Mathematics 2020-03-10 John G. Ratcliffe , Steven T. Tschantz

In this note we prove that the set of all uniformly continuous units on a product system over a C* algebra B can be endowed with the structure of left right B - B Hilbert module after identifying similar units by the suitable equivalence…

Operator Algebras · Mathematics 2015-12-15 Dragoljub J. Kečkić , Biljana Vujošević

We study growth of holomorphic vector bundles E over smooth affine manifolds. We define Finsler metrics of finite order on E by estimates on the holomorphic bisectional curvature. These estimates are very similar to the ones used by…

Complex Variables · Mathematics 2013-11-14 Mario Maican

A model structure is defined on the category of derived differentiable schemes, and it is used to analyse the truncation 2-functor from derived manifolds to d-manifolds. It is proved that the induced 1-functor between the homotopy…

Differential Geometry · Mathematics 2014-01-14 Dennis Borisov

We consider a category whose morphisms are bordisms of $n$-dimensional pseudomanifolds equipped with a certain additional structure (coloring). On the other hand, we consider the product $G$ of $(n+1)$ copies of infinite symmetric group. We…

Representation Theory · Mathematics 2018-12-14 Alexander A. Gaifullin , Yury A. Neretin

In this paper, we will give the polyhedron property role to satisfy fiber homotopically equivalent relation in fiber bundle theory over suspensions of polyhedron space.

Algebraic Topology · Mathematics 2010-08-25 Suliman Dawood , Adem Kilicman

We study smooth bundles over surfaces with highly connected almost parallelizable fiber $M$ of even dimension, providing necessary conditions for a manifold to be bordant to the total space of such a bundle and showing that, in most cases,…

Algebraic Topology · Mathematics 2022-02-10 Manuel Krannich , Jens Reinhold

We show that the idempotent completion of an n-angulated category admits a unique n-angulated structure such that the inclusion is an n-angulated functor, which satisfies a universal property.

Category Theory · Mathematics 2017-01-17 Zengqiang Lin

In this paper we study the relative tensor product of module categories over braided fusion categories using, in part, the notion of the relative center of a module category. In particular we investigate the canonical tensor category…

Quantum Algebra · Mathematics 2011-10-18 Justin Greenough

Holomorphic vector bundles on $\mathbb C\times M$, $M$ a complex manifold, with meromorphic connections with poles of Poincar\'e rank 1 along $\{0\}\times M$ arise naturally in algebraic geometry. They are called $(TE)$-structures here.…

Algebraic Geometry · Mathematics 2021-09-08 Claus Hertling

On every compact and orientable three-manifold, we construct total foliations (three codimension 1 foliations that are transverse at every point). This construction can be performed on any homotopy class of plane fields with vanishing Euler…

Geometric Topology · Mathematics 2009-10-19 Masayuki Asaoka , Emmanuel Dufraine , Takeo Noda

We investigate the correspondence between generalized persistence modules and graded modules in the case the indexing set has a monoid action. We introduce the notion of an action category over a monoid graded ring. We show that the…

Algebraic Topology · Mathematics 2021-02-15 Eero Hyry , Markus Klemetti

We show that the free construction from multicategories to permutative categories is a categorically-enriched non-symmetric multifunctor. Our main result then shows that the induced functor between categories of algebras is an equivalence…

Algebraic Topology · Mathematics 2022-10-05 Niles Johnson , Donald Yau

We construct a simple topological invariant of certain 3-manifolds, including quotients of the 3-sphere by finite groups, based on the fact that the tangent bundle of an orientable 3-manifold is trivialisable. This invariant is strong…

Geometric Topology · Mathematics 2007-05-23 Siddhartha Gadgil

We consider here the category of diffeological vector pseudo-bundles, and study a possible extension of classical differential geometric tools on finite dimensional vector bundles, namely, the group of automorphisms, the frame bundle, the…

Differential Geometry · Mathematics 2024-02-05 Jean-Pierre Magnot

For a compact group G, we give a sufficient condition for embedding one G-equivariant vector bundle into another one and for a stable isomorphism between two such bundles to imply an isomorphism. Our criteria involve multiplicities of…

K-Theory and Homology · Mathematics 2025-11-04 Malkhaz Bakuradze , Ralf Meyer

We develop some aspects of the homological algebra of persistence modules, in both the one-parameter and multi-parameter settings, considered as either sheaves or graded modules. The two theories are different. We consider the graded module…

Algebraic Topology · Mathematics 2022-05-09 Peter Bubenik , Nikola Milicevic

We introduce a topological variant of the Grothendieck construction which serves to represent every fiber bundle over an Alexandroff space. Using this result we give a classification theorem for fiber bundles over Alexandroff spaces with…

Algebraic Topology · Mathematics 2020-04-16 Nicolás Cianci , Miguel Ottina

In this note we study the local projective model structure on presheaves of complexes on a site, i.e. we describe its classes of cofibrations, fibrations and weak equivalences. In particular, we prove that the fibrant objects are those…

Category Theory · Mathematics 2020-01-03 Utsav Choudhury , Martin Gallauer