Miroslav Korbel'avr

activity

20122026

collaborators

4 papers

math-ph2026

Structure of Clifford groups of composite finite quantum systems

Miroslav Korbelář, Jiří Tolar

In this paper the Clifford groups of general multipartite quantum systems with configuration space $Z_{n_{1}} \oplus \dots \oplus Z_{n_{k}}$ , $k \geq 1$ are studied. It i…

math.RA2023

Additively idempotent matrix semirings

Tomáš Kepka, Miroslav Korbelář

Let $S$ be an additively idempotent semiring and $M_{n} (S)$ be the semiring of all $n \times n$ matrices over $S$ . We characterize the conditions of when the semiring $\mathb…

math.RA2022

Congruence-simple semirings without nilpotent elements

Tomáš Kepka, Miroslav Korbelář, Günter Landsmann

We provide a classification of congruence-simple semirings with a multiplicatively absorbing element and without non-trivial nilpotent elements.

math.OC2012

The lowest-degree polynomials with non-negative coefficients

Tomáš Kepka, Miroslav Korbelář

A polynomial $p \in R [x]$ is a divisor of some polynomial $0 \neq = f \in R [x]$ with non-negative coefficients if and only if $p$ does not have a positive real root. The…