Results 11 to 20 of about 5,878 (86)

On epimorphisms and monomorphisms in the homotopy category of CW complexes

open access: yesJapanese journal of mathematics. New series, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Matumoto, Takao, Ohkawa, Tetsusuke
openaire   +3 more sources

On the Algebraic Classification of Module Spectra [PDF]

open access: yes, 2011
Using methods developed by Franke, we obtain algebraic classification results for modules over certain symmetric ring spectra ($S$-algebras). In particular, for any symmetric ring spectrum $R$ whose graded homotopy ring $\pi_*R$ has graded global ...
Patchkoria, Irakli
core   +1 more source

Symmetric products, duality and homological dimension of configuration spaces [PDF]

open access: yes, 2008
We discuss various aspects of `braid spaces' or configuration spaces of unordered points on manifolds. First we describe how the homology of these spaces is affected by puncturing the underlying manifold, hence extending some results of Fred Cohen ...
Kallel, Sadok
core   +5 more sources

Equivariant homotopy epimorphisms, homotopy monomorphisms and homotopy equivalences

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 1995
Let \(G\) be a finite group. Using Bredon-Illman cohomology with equivariant local coefficients systems conditions are given on a morphism in the \(G\)-homotopy category of pointed \(G\)-complexes to be an equivalence. In the case of the trivial group a variant of a result of \textit{E. Dyer} and \textit{J. Roitberg} [Topology Appl.
openaire   +3 more sources

$C^*$-algebraic drawings of dendroidal sets

open access: yes, 2019
In recent years the theory of dendroidal sets has emerged as an important framework for higher algebra. In this article we introduce the concept of a $C^*$-algebraic drawing of a dendroidal set. It depicts a dendroidal set as an object in the category of
Mahanta, Snigdhayan
core   +1 more source

Families of singular algebraic varieties that are rationally elliptic spaces

open access: yesMathematische Nachrichten, Volume 299, Issue 1, Page 214-223, January 2026.
Abstract We discuss families of hypersurfaces with isolated singularities in projective space with the property that the sum of the ranks of the rational homotopy and the homology groups is finite. They represent infinitely many distinct homotopy types with all hypersurfaces having a nef canonical or anti‐canonical class.
A. Libgober
wiley   +1 more source

On homotopy regular monomorphisms

open access: yesChinese Science Bulletin, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Modeling (∞,1)$(\infty,1)$‐categories with Segal spaces

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract In this paper, we construct a model structure for (∞,1)$(\infty,1)$‐categories on the category of simplicial spaces, whose fibrant objects are the Segal spaces. In particular, we show that it is Quillen equivalent to the models of (∞,1)$(\infty,1)$‐categories given by complete Segal spaces and Segal categories.
Lyne Moser, Joost Nuiten
wiley   +1 more source

The shift‐homological spectrum and parametrising kernels of rank functions

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 6, December 2025.
Abstract For any compactly generated triangulated category, we introduce two topological spaces, the shift spectrum and the shift‐homological spectrum. We use them to parametrise a family of thick subcategories of the compact objects, which we call radical.
Isaac Bird   +2 more
wiley   +1 more source

On monomorphisms in homotopy theory

open access: yesTopology, 1967
A MAP h : Y ~ Z is a monomorphism in the category o f based topological spaces and based homotopy classes o f maps if, for any space X and any two maps f , g : X ~ Y, h o f ,,~ h o g imp l i e s f _ g [6; p. 168]. Let O denote the constant map with arbitrary domain and range, and suppose h is a fibre map with fibre X and inclusion e : X ~ Y; then, h o ...
openaire   +1 more source

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