On the equivalence of polynomial matrices over a field

UDC 512.64 The polynomial $(n\times n)$ matrices $A(\lambda )$ and $B(\lambda)$ over a field ${\mathbb F}$ are  called semiscalar equivalent if there exists a nonsingular $(n\times n)$ matrix $P$ over ${\mathbb F}$ and  an invertible $(n\times n)$  polynomial m...

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Datum:2024
Hauptverfasser: Prokip , V., Прокіп, Володимир
Format: Artikel
Sprache:Ukrainisch
Veröffentlicht: Institute of Mathematics, NAS of Ukraine 2024
Online Zugang:https://umj.imath.kiev.ua/index.php/umj/article/view/7926
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Назва журналу:Ukrains’kyi Matematychnyi Zhurnal
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Ukrains’kyi Matematychnyi Zhurnal
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author Prokip , V.
Прокіп, Володимир
author_facet Prokip , V.
Прокіп, Володимир
author_sort Prokip , V.
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datestamp_date 2024-11-22T08:15:25Z
description UDC 512.64 The polynomial $(n\times n)$ matrices $A(\lambda )$ and $B(\lambda)$ over a field ${\mathbb F}$ are  called semiscalar equivalent if there exists a nonsingular $(n\times n)$ matrix $P$ over ${\mathbb F}$ and  an invertible $(n\times n)$  polynomial matrix $Q(\lambda )$ over ${\mathbb F[\lambda}]$ such that $A(\lambda ) = PB(\lambda )Q(\lambda )$.  We establish conditions under which nonsingular polynomial matrices $A(\lambda )$ and $B(\lambda )$  are semiscalar equivalent.  As a consequence, we present the conditions of equivalence and similarity of two sets of $(n\times n)$  matrices over an arbitrary field ${\mathbb F}.$
doi_str_mv 10.3842/umzh.v76i5.7926
first_indexed 2026-03-24T03:34:50Z
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spelling umjimathkievua-article-79262024-11-22T08:15:25Z On the equivalence of polynomial matrices over a field Про еквівалентність многочленних матриць над полем Prokip , V. Прокіп, Володимир polynomial matrix, equivalence of matrices, semi-scalar equivalence of matrices , similarity of sets of matrices Еквівалентність матриць UDC 512.64 The polynomial $(n\times n)$ matrices $A(\lambda )$ and $B(\lambda)$ over a field ${\mathbb F}$ are  called semiscalar equivalent if there exists a nonsingular $(n\times n)$ matrix $P$ over ${\mathbb F}$ and  an invertible $(n\times n)$  polynomial matrix $Q(\lambda )$ over ${\mathbb F[\lambda}]$ such that $A(\lambda ) = PB(\lambda )Q(\lambda )$.  We establish conditions under which nonsingular polynomial matrices $A(\lambda )$ and $B(\lambda )$  are semiscalar equivalent.  As a consequence, we present the conditions of equivalence and similarity of two sets of $(n\times n)$  matrices over an arbitrary field ${\mathbb F}.$ УДК 512.64 Кажуть, що многочленні $(n\times n)$-матриці $A(\lambda )$ і $B(\lambda )$ над полем ${\mathbb F}$  напівскалярно еквівалентні, якщо існують неособлива матриця $P$ над ${\mathbb F}$ та зворотна многочленна $(n\times n)$-матриця $Q(\lambda )$ над ${\mathbb F[\lambda}]$ такі, що  $A(\lambda )=PB(\lambda )Q(\lambda ).$ Встановлено умови, за яких неособливі многочленні матриці $A(\lambda )$ і $B(\lambda )$ напівскалярно еквівалентні. Як наслідок, наведено умови еквівалентності та подібності двох наборів $(n\times n)$-матриць над довільним полем ${\mathbb F}.$  Institute of Mathematics, NAS of Ukraine 2024-06-02 Article Article application/pdf https://umj.imath.kiev.ua/index.php/umj/article/view/7926 10.3842/umzh.v76i5.7926 Ukrains’kyi Matematychnyi Zhurnal; Vol. 76 No. 5 (2024); 743 - 750 Український математичний журнал; Том 76 № 5 (2024); 743 - 750 1027-3190 uk https://umj.imath.kiev.ua/index.php/umj/article/view/7926/9944 Copyright (c) 2024 Володимир Михайлович Прокіп
spellingShingle Prokip , V.
Прокіп, Володимир
On the equivalence of polynomial matrices over a field
title On the equivalence of polynomial matrices over a field
title_alt Про еквівалентність многочленних матриць над полем
title_full On the equivalence of polynomial matrices over a field
title_fullStr On the equivalence of polynomial matrices over a field
title_full_unstemmed On the equivalence of polynomial matrices over a field
title_short On the equivalence of polynomial matrices over a field
title_sort on the equivalence of polynomial matrices over a field
topic_facet polynomial matrix
equivalence of matrices
semi-scalar equivalence of matrices
similarity of sets of matrices
Еквівалентність матриць
url https://umj.imath.kiev.ua/index.php/umj/article/view/7926
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AT prokípvolodimir proekvívalentnístʹmnogočlennihmatricʹnadpolem