activity
20052025
most citedRealization of inverse Stieltjes functions by Schrodinger L-systems

2 citations · 3 across the 13 of their papers we have counts for

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14 papers

math.SP2025

The c-Entropy of non-dissipative L-systems

Sergey Belyi, Konstantin A. Makarov, Eduard Tsekanovskii

In this paper, we extend the definition of c-entropy to canonical L-systems with non-dissipative state-space operators. We also introduce the concepts of dissipation and accumulati…

math.SP2025

L-systems with Multiplication Operator and c-Entropy

Sergey Belyi, Konstantin Makarov, Eduard Tsekanovskii

In this note, we utilize the concepts of c-entropy and the dissipation coefficient in connection with canonical L-systems based on the multiplication (by a scalar) operator. Additi…

math.SP2024

The c-Entropy optimality of Donoghue classes

Sergey Belyi, Konstantin Makarov, Eduard Tsekanovskii

In this note we evaluate c-Entropy of perturbed L-systems introduced in [5]. Explicit formulas relating the c-Entropy of the L-systems and the perturbation parameter are establishe…

math.SP2023

The L-system representation and c-entropy

Sergey Belyi, Konstantin A. Makarov, Eduard Tsekanovskii

Given a symmetric operator with deficiency indices and its self-adjoint extension in a Hilbert space , we construct a (unique) L-system with the m…

math.SP2023★ 2 cited

Realization of inverse Stieltjes functions by Schrodinger L-systems

Sergey Belyi, Eduard Tsekanovskii

We study L-system realizations of the original Weyl-Titchmarsh functions . In the case when the minimal symmetric Schrödinger operator is non-negative, we describe the S…

math.SP2021

On the c-entropy of L-systems with Schrodinger operator

Sergey Belyi, Konstantin Makarov, Eduard Tsekanovskii

We study L-systems whose main operators are extensions of one-dimensional half-line Schrödinger operators with deficiency indices , the Schrödinger L-systems. Introducing n…