I. Kachkovskiy

activity

20102026

most citedOn transport properties of isotropic quasiperiodic

X Y

spin chains

23 citations · 65 across the 19 of their papers we have counts for

collaborators

Showing math.OAShow all

2 papers · 1 filter

math.OA2025

On almost commuting unitary matrices

Adam Dor-On, Lucas Hall, Ilya Kachkovskiy

A question going back to Halmos asks when two approximately commuting matrices of a certain kind are close to exactly commuting matrices of the same kind. It has long been known th…

math.OA2011

Polynomials of almost-normal arguments in $C^{*}$ -algebras

Nikolay Filonov, Ilya Kachkovskiy

The functional calculus for normal elements in $C^{*}$ -algebras is an important tool of analysis. We consider polynomials $p (a, a^{*})$ for elements $a$ with small self-commutator norm…

On almost commuting unitary matrices

Polynomials of almost-normal arguments in C∗-algebras

Polynomials of almost-normal arguments in $C^{*}$ -algebras