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The purpose of this paper is twofold. First, we use the motivic Landweber exact functor theorem to deduce that the Bott inverted infinite projective space is homotopy algebraic $K$-theory. The argument is considerably shorther than any…

Algebraic Geometry · Mathematics 2008-10-17 Niko Naumann , Markus Spitzweck , Paul Arne Østvær

We compare the invariants of flat vector bundles defined by Atiyah et al. and Jones et al. and prove that, up to weak homotopy, they induce the same map, denoted by $e$, from the $0$-connective algebraic $K$-theory space of the complex…

K-Theory and Homology · Mathematics 2020-05-13 Yi-Sheng Wang

We do three things in this paper: (1) study the analog of localization sequences (in the sense of algebraic $K$-theory of stable $\infty$-categories) for additive $\infty$-categories, (2) define the notion of nilpotent extensions for…

K-Theory and Homology · Mathematics 2021-06-16 Elden Elmanto , Vladimir Sosnilo

Let A be a dg category, F:A->A a dg functor inducing an equivalence of categories in degree-zero cohomology, and A/F the associated dg orbit category. For every A1-homotopy invariant (e.g. homotopy K-theory, K-theory with coefficients,…

K-Theory and Homology · Mathematics 2015-03-10 Goncalo Tabuada

We prove an equivalence between the real $K$-theory genuine $C_2$-spectra of Calm\`es et al. for Poincar\'e $\infty$-categories and the one of the authors of this work for Waldhausen $\infty$-categories with genuine duality.

K-Theory and Homology · Mathematics 2026-04-22 Hadrian Heine , Markus Spitzweck , Paula Verdugo

We establish connections between the concepts of Noetherian, regular coherent, and regular n-coherent categories for Z-linear categories with finitely many objects and the corresponding notions for unital rings. These connections enable us…

K-Theory and Homology · Mathematics 2023-11-01 Eugenia Ellis , Rafael Parra

Given a functor $\varphi : \mathcal{C} \to \mathcal{D}$ between two small categories, there is a homotopy equivalence $\kappa: hocolim _{\mathcal{D}} N(\varphi /-) \to N\mathcal{C}$ where $N(\varphi/-)$ is the functor which sends every…

Algebraic Topology · Mathematics 2026-04-02 Mehmet Kirtisoglu , Ergun Yalcin

In the present paper we investigate the question about the injectivity of the map F(R) --> F(K) induced by the canonical inclusion of a local regular ring of geometric type R to its field of fractions K for a homotopy invariant functor F…

Algebraic Geometry · Mathematics 2007-05-23 Kirill Zainoulline

Let $L_n$ denote the Dwyer-Kan localization of the category of weak n-categories divided by the n-equivalences. We propose a list of properties that this simplicial category is likely to have, and conjecture that these properties…

Category Theory · Mathematics 2007-05-23 Carlos Simpson

In this article we study the K-theory of endomorphisms using noncommutative motives. We start by extending the K-theory of endomorphisms functor from ordinary rings to (stable) infinity categories. We then prove that this extended functor…

Algebraic Topology · Mathematics 2013-02-07 Andrew J. Blumberg , David Gepner , Goncalo Tabuada

We show that in $K$-theory-like categories many corner embeddings into a discrete algebra of compact operators are invertible, and consequently functors on splitexact algebraic $KK$-theory are faithful if and only if they are faithful on…

K-Theory and Homology · Mathematics 2025-01-22 Bernhard Burgstaller

For any object A in a simplicial model category M, we construct a topological space \^A which classifies homogeneous functors whose value on k open balls is equivalent to A. This extends a classification result of Weiss for homogeneous…

Algebraic Topology · Mathematics 2024-12-31 Paul Arnaud Songhafouo Tsopmene , Donald Stanley

The category of small covariant functors from simplicial sets to simplicial sets supports the projective model structure. In this paper we construct various localizations of the projective model structure and also give a variant for…

Algebraic Topology · Mathematics 2013-09-11 Georg Biedermann , Boris Chorny , Oliver Röndigs

This article tackles categorical coherence within a two-dimensional generalization of Lawvere's functorial semantics. 2-theories, a syntactical way of describing categories with structure, are presented. From the perspective here afforded,…

Category Theory · Mathematics 2007-05-23 Noson S. Yanofsky

Let V be a smooth variety defined over the real numbers. Every algebraic vector bundle on V induces a complex vector bundle on the underlying topological space V(C), and the involution coming from complex conjugation makes it a Real vector…

K-Theory and Homology · Mathematics 2007-05-23 Max Karoubi , Charles Weibel

The Gersten conjecture is still an open problem of algebraic $K$-theory for mixed characteristic discrete valuation rings. In this paper, we establish non-unital algebraic $K$-theory which is modified to become an exact functor from the…

K-Theory and Homology · Mathematics 2023-02-28 Yuki Kato

This is a continuation, completion, and generalization of our previous joint work with B. Chorny. We supply model structures and Quillen equivalences underlying Goodwillie's constructions on the homotopy level for functors between…

Algebraic Topology · Mathematics 2014-11-26 Georg Biedermann , Oliver Röndigs

We compare derived categories of the category of strict polynomial functors over a finite field and the category of ordinary endofunctors on the category of vector spaces. We introduce two intermediate categories: the category of…

K-Theory and Homology · Mathematics 2022-07-27 Marcin Chałupnik

K-Theory for hermitian symmetric spaces of non-compact type, as developed recently by the authors, allows to put Cartan's classification into a homological perspective. We apply this method to the case of inductive limits of finite…

K-Theory and Homology · Mathematics 2016-09-23 Dennis Bohle , Wend Werner

We introduce the notion of a bounded weight structure on a stable $\infty$-category and use this to prove the natural generalization of Waldhausen's sphere theorem: We show that the algebraic $K$-theory of a stable $\infty$-category with a…

K-Theory and Homology · Mathematics 2019-11-19 Ernest E. Fontes
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