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In this paper we study stability patterns in the homology of the ordered configuration space of the once-punctured torus. In the last decade Church and Church-Ellenberg-Farb proved that the homology groups of the ordered configuration space…

Algebraic Topology · Mathematics 2026-02-26 Nicholas Wawrykow

Given a graded $E_1$-module over an $E_2$-algebra in spaces, we construct an augmented semi-simplicial space up to higher coherent homotopy over it, called its canonical resolution, whose graded connectivity yields homological stability for…

Algebraic Topology · Mathematics 2019-10-23 Manuel Krannich

For any smooth compact manifold $W$ of dimension at least two we prove that the classifying spaces of its group of diffeomorphisms which fix a set of $k$ points or $k$ embedded disks (up to permutation) satisfy homology stability. The same…

Algebraic Topology · Mathematics 2015-12-16 Ulrike Tillmann

The ordered configuration space of $n$ open unit squares in the $w$ by $h$ rectangle exhibits homological stability in the space direction. That is, for fixed $n$ and fixed homological degree $k$, once the underlying rectangle is large…

Algebraic Topology · Mathematics 2026-02-26 Jesús González , Matthew Kahle , Nicholas Wawrykow

For a given bundle $\xi \colon E \to M$ over a manifold, configuration-section spaces on $\xi$ parametrise finite subsets $z \subseteq M$ equipped with a section of $\xi$ defined on $M \smallsetminus z$, with prescribed "charge" in a…

Algebraic Topology · Mathematics 2021-09-03 Martin Palmer , Ulrike Tillmann

We prove that the homology of the mapping class groups of non-orientable surfaces stabilizes with the genus of the surface. Combining our result with recent work of Madsen and Weiss, we obtain that the classifying space of the stable…

Geometric Topology · Mathematics 2009-11-11 Nathalie Wahl

We lift the classical theorem of Arnol'd on homological stability for configurations spaces of the plane to the motivic world. More precisely, we prove that the schemes of unordered configurations of points in the affine line satisfy…

Algebraic Topology · Mathematics 2016-10-12 Geoffroy Horel

We give a concrete method to explicitly compute the rational cohomology of the unordered configuration spaces of connected, oriented, closed, even-dimensional manifolds of finite type which we have implemented in Sage [S+09]. As an…

Algebraic Topology · Mathematics 2016-12-20 Megan Maguire , with Appendix by Matthew Christie , Derek Francour

Conjecture F from [VW12] states that the complements of closures of certain strata of the symmetric power of a smooth irreducible complex variety exhibit rational homological stability. We prove a generalization of this conjecture to the…

Algebraic Topology · Mathematics 2014-12-17 Alexander Kupers , Jeremy Miller , TriThang Tran

Following the argument for diffeomorphisms by Galatius and Randal-Williams, we prove that homeomorphisms of 1-connected manifolds of even dimension at least 6 exhibit homological stability. We deduce similar results for PL homeomorphisms…

Algebraic Topology · Mathematics 2016-08-23 Alexander Kupers

We prove Conjecture F from [VW12] which states that the complements of closures of certain strata of the symmetric power of a smooth irreducible complex variety exhibit rational homological stability. Moreover, we generalize this conjecture…

Algebraic Topology · Mathematics 2013-12-24 Alexander Kupers , Jeremy Miller

Using a result of Gan and Li on FI-hyperhomology and a semi-simplicial resolution of configuration spaces due to Randal-Williams, we establish an improved representation stability stable range for configuration spaces of distinct ordered…

Algebraic Topology · Mathematics 2019-07-25 Jeremy Miller , Jennifer C. H. Wilson

We prove a homotopy invariance result for a certain covering space of the space of ordered configurations of two points in $M \times X$ where $M$ is a closed smooth manifold and $X$ is any fixed aspherical space which is not a point.

Algebraic Topology · Mathematics 2017-03-28 George Raptis , Paolo Salvatore

We prove that the space of complex irreducible polynomials of degree $d$ in $n$ variables satisfies two forms of homological stability: first, its cohomology stabilizes as $d$ increases, and second, its compactly supported cohomology…

Algebraic Geometry · Mathematics 2020-08-27 Weiyan Chen

We prove that the homology of the mapping class group of any 3-manifold stabilizes under connected sum and boundary connected sum with an arbitrary 3-manifold when both manifolds are compact and orientable. The stabilization also holds for…

Geometric Topology · Mathematics 2019-12-19 Allen Hatcher , Nathalie Wahl

In this article we introduce the space of configurations of commuting elements in a topological group and show that it satisfies rational homological stability for the sequences of unitary, special unitary and symplectic groups. We also…

Algebraic Topology · Mathematics 2022-01-11 José Cantarero , Ángel R. Jiménez

Using factorization homology, we realize the rational homology of the unordered configuration spaces of an arbitrary manifold $M$, possibly with boundary, as the homology of a Lie algebra constructed from the compactly supported cohomology…

Algebraic Topology · Mathematics 2018-03-16 Ben Knudsen

Given a manifold with boundary, one can consider the space of subsurfaces of this manifold meeting the boundary in a prescribed fashion. It is known that these spaces of subsurfaces satisfy homological stability if the manifold has at least…

Algebraic Topology · Mathematics 2020-09-02 Thorben Kastenholz

We prove a homological stability theorem for moduli spaces of simply-connected manifolds of dimension $2n > 4$, with respect to forming connected sum with $S^n \times S^n$. This is analogous to Harer's stability theorem for the homology of…

Algebraic Topology · Mathematics 2019-08-07 Soren Galatius , Oscar Randal-Williams

We prove twisted homological stability for handlebody mapping class groups. Using the categorical framework developed by Randal-Williams and Wahl, we establish that the homology of the handlebody groups stabilises with respect to both genus…

Geometric Topology · Mathematics 2026-03-04 Erik Lindell , Arthur Soulié