activity
20162024
most citedFramed correspondences and the zeroth stable motivic homotopy group in odd characteristic

9 citations · 48 across the 18 of their papers we have counts for

collaborators

20 papers

math.AG2024

Hypercomplete étale framed motives and comparison of stable homotopy groups of motivic spectra and étale realizations over a field

Andrei Druzhinin, Ola Sande

For any base field and integer invertible in , we prove that and commute with hyper étale sheafification …

math.AG2023

Nisnevich equivalences of local essentially smooth open pairs

A. E. Druzhinin, A. A. Urzabaev

In this note, we prove a Nisnevich local equivalence \begin{equation*} X/(X-Z)\simeq X^\prime/(X^\prime-Z^\prime) \end{equation*} for essentially smooth local schemes and $X^\p…

math.AG2021

Stable motivic trivial fibre decomposition over integers and framed motives

Andrei Druzhinin

Using the trivial fiber topology we describe motivic -loop spaces and fibrant replacements in the motivic stable homotopy category $\mathbf{SH}_{\mathbb{A}^1,\mathrm{Nis}}(…

math.AG2021

Zariski-local framed -homotopy theory

Andrei Druzhinin, Vladimir Sosnilo

For any (not necessarily perfect) field we obtain equivalences of -categories \[\mathbf{H}^{\mathrm{fr},\mathrm{gp}}(k)\simeq \mathbf{H}^{\mathrm{fr},\mathrm{gp}}_{\mat…

math.AG2021★ 2 cited

Strict homotopy invariance via compactified homotopies and correspondences, and fibres of essentially smooth schemes over one-dimensional base schemes

Andrei Druzhinin

We develop the technique of compactified correspondences and homotopies over one-dimensional base schemes, and illuminate the perfectness and the inverting of characteristic assump…

math.AG2020★ 4 cited

The trivial fiber topology and framed motives over the integers

A. Druzhinin, Håkon Kolderup, Paul Arne Østvær

This paper introduces the trivial fiber topology on schemes. For one-dimensional base schemes, we use it to describe fibrant replacements in the stable motivic homotopy category an…

math.AG2020★ 2 cited

Stable connectivity over a base

A. Druzhinin

Morel's stable connectivity theorems state that for any connective -spectrum of motivic spaces (Nisnevich simplicial sheaves) over an arbitrary field, the spectrum $L_{\ma…

math.AG2018★ 1 cited

Geometric models for fibrant resolutions of motivic suspension spectra

Andrei Druzhinin

We construct geometric models for the -spectrum , which computes in Garkusha-Panin's theory of framed motives \cite{GP14} a positively motivically…

math.AG2018★ 1 cited

Rigidity for smooth affine pairs over a field

A. Druzhinin

Let be a closed immersion of smooth affine schemes over an arbitrary field , and denote the henselization of along . For each presheaf $E\colon \mathbf{S…

math.KT2018★ 9 cited

Framed correspondences and the zeroth stable motivic homotopy group in odd characteristic

Andrei Druzhinin, Jonas Irgens Kylling

We extend the results of G.~Garkusha and I.~Panin on framed motives of algebraic varieties [4] to the case of a finite base field, and extend the computation of the zeroth cohomolo…

math.AG2018★ 1 cited

The homomorphism of presheaves over a base

A. Druzhinin

We construct the homomorphism of presheaves over an arbitrary base scheme , where is the (naive) Milnor-Witt K-…

math.KT2018

Surjectivity of the etale excision map for homotopy invariant framed presheaves

Andrei Druzhinin, Ivan Panin

The category of framed correspondences Fr_*(k), framed presheaves and framed sheaves were invented by Voevodsky in his unpublished notes [17]. Based on the notes [17] a new approac…

math.AG2018★ 3 cited

Cohomological correspondence categories

Andrei Druzhinin, Håkon Kolderup

We prove that homotopy invariance and cancellation properties are satisfied by any linear category of correspondences that is defined, via Calmès and Fasel's construction, by an un…

math.AG2018★ 4 cited

Framed motives of smooth affine pairs

A. E. Druzhinin

The theory of framed motives by Garkusha and Panin gives computations in the stable motivic homotopy category in terms of Voevodsky's framed correspondences. In pa…

math.KT2017★ 4 cited

Cancellation theorem for Grothendieck-Witt-correspondences and Witt-correspondences

Andrei Druzhinin

The cancellation theorem for Grothendieck-Witt-correspondences and Witt-correspondences between smooth varieties over an infinite prefect field , , is proved, the…

math.AG2017★ 4 cited

Effective Grothendieck-Witt motives of smooth varieties

Andrei Druzhinin

The category of effective Grothendieck-Witt-motives (and Witt-motives ) by Voevodsky-Suslin method startin…

math.AG2017★ 9 cited

Strictly homotopy invariance of Nisnevich sheaves with GW-transfers

Andrei Druzhinin

The strictly homotopy invariance of the associated Nisnevish sheave of a homotopy invariant presheave with GW-transfers (or Witt-transfe…

math.AG2017

Rigidity theorem for presheaves with Witt-transfers

Andrei Druzhinin

The rigidity theorem for homotopy invariant presheaves with Witt-transfers on the category of smooth affine varieties over a field with characteristic not equal to 2 is proved.…

math.KT2017

Rigidity for linear framed presheaves and generalized motivic cohomology theories

Alexey Ananyevskiy, Andrei Druzhinin

A rigidity property for the homotopy invariant stable linear framed presheaves is established. As a consequence a variant of Gabber rigidity theorem is obtained for a cohomology th…

math.AG2016★ 4 cited

Triangulated category of effective -motives

Andrei Druzhinin

The category of effective -motives with functor defining motives of smooth affine varieties for perfect field , is co…