activity
19952025
most citedAn exact sequence for Milnor's K-theory with applications to quadratic forms

198 citations · 271 across the 17 of their papers we have counts for

collaborators

19 papers

math.AG2025

The Balmer spectrum of Voevodsky motives and pure symbols

Alexander Vishik

In this article we introduce invariants of points of the Balmer spectrum of the Voevodsky motivic category whose values are "light Rost cycle submodules" of the module of pure symb…

math.AG2025

Varieties and pure symbols

Alexander Vishik

In this article, we prove that the 2-isotropy of any projective variety is controlled by a pure symbol in the Milnor's K-theory (mod 2) of the flexible closure of the base field. W…

math.AG2023

On the Balmer spectrum of the Morel-Voevodsky category

Peng Du, Alexander Vishik

We introduce the Morava-isotropic stable homotopy category and, more generally, the stable homotopy category of an extension . These "local" versions of the Morel-Voevodsky st…

math.AG2023

On torsion spaces

Alexander Vishik

The purpose of this note is to construct examples of compact torsion objects of of every -level over an arbitrary field of characteristic different from . We a…

math.AG2023★ 5 cited

Isotropic and numerical equivalence for Chow groups and Morava K-theories

Alexander Vishik

In this paper we prove the conjecture claiming that, over a flexible field, isotropic Chow groups coincide with numerical Chow groups (with -coefficients). This shows…

math.AG2022

On isotropic and numerical equivalence of cycles

Alexander Vishik

We study the conjecture claiming that, over a flexible field, isotropic Chow groups coincide with numerical Chow groups (with -coefficients). This conjecture is essent…

math.AG2021

Torsion motives

Alexander Vishik

In this paper we study Chow motives whose identity map is killed by a natural number. Examples of such objects were constructed by Gorchinskiy-Orlov. We introduce various invariant…

math.KT2020

Operations in connective K-theory

Alexander Merkurjev, Alexander Vishik

In this article we classify additive operations in connective K-theory with various torsion-free coefficients. We discover that the answer for the integral case requires understand…

math.AG2019★ 11 cited

Isotropic motives

Alexander Vishik

In this article we introduce the local versions of the Voevodsky category of motives with Z/p-coefficients over a field k, parameterized by finitely-generated extensions of k. We i…

math.AG2018★ 3 cited

Rost nilpotence and free theories

Stefan Gille, Alexander Vishik

We introduce coherent cohomology theories h_* and prove that if such a theory is moreover generically constant then the Rost nilpotence principle holds for projective homogeneous v…

math.AG2018★ 3 cited

Affine quadrics and the Picard group of the motivic category

Alexander Vishik

In this article we study the subgroup of the Picard group of Voevodsky's category of geometric motives generated by the reduced motives of affine quadrics. Our main tools here are…

math.AG2017

Motivic equivalence of affine quadrics

Tom Bachmann, Alexander Vishik

In this article we show that the motive of an affine quadric {q = 1} determines the respective quadratic form.

math.AG2014

Operations and poly-operations in Algebraic Cobordism

Alexander Vishik

We describe all operations from a theory A^* obtained from Algebraic Cobordism of M.Levine-F.Morel by change of coefficients to any oriented cohomology theory B^* (in the case of a…

math.AG2014

Algebraic Cobordism as a module over the Lazard ring

Alexander Vishik

In this paper we study the structure of the Algebraic Cobordism ring of a variety as a module over the Lazard ring, and show that it has relations in positive codimensions. We actu…

math.AG2014★ 9 cited

Subtle Characteristic Classes

Alexander Smirnov, Alexander Vishik

We construct new subtle Stiefel--Whitney classes of quadratic forms. These classes are much more informative than the ones introduced by Milnor. In particular, they see all the pow…

math.AG2013★ 9 cited

Symmetric operations for all primes and Steenrod operations in Algebraic Cobordism

Alexander Vishik

In this article we construct Symmetric operations for all primes (previously known only for p=2). These unstable operations are more subtle than the Landweber-Novikov operations, a…

math.AG2012★ 12 cited

Stable and Unstable operations in Algebraic Cobordism

Alexander Vishik

We describe additive (unstable) operations from a theory A^* obtained from Algebraic Cobordism of M.Levine-F.Morel by change of coefficients to any oriented cohomology theory B^*.…

math.AG2001★ 198 cited

An exact sequence for Milnor's K-theory with applications to quadratic forms

Dmitry Orlov, Alexander Vishik, Vladimir Voevodsky

We construct a four-term exact sequence which provides information on the kernel and cokernel of the multiplication by a pure symbol in Milnor's K-theory mod 2 of fields of charact…

alg-geom1995★ 21 cited

Koszul duality and Galois cohomology

Leonid Positselski, Alexander Vishik

It it shown that the Bloch-Kato conjecture on the norm residue homomorphism follows from its (partially known) low-degree part under the assumption that…