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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-281</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>К ТЕОРЕМЕ ГОЛЬДМАНА О ВОЗМУЩЕНИИ ОПЕРАТОРОВ С ЗАМКНУТОЙ ОБЛАСТЬЮ ЗНАЧЕНИЙ КОМПАКТНЫМИ ОПЕРАТОРАМИ</article-title><trans-title-group xml:lang="en"><trans-title>TO GOLDMAN’S THEOREM OF PERTURBATION OF THE OPERATORS WITH A CLOSED RANGE BY COMPACT OPERATORS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ЕРОВЕНКО</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>EROVENKO</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">erovenko@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ГУЛИНА</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>GULINA</surname><given-names>O. V.</given-names></name></name-alternatives><email xlink:type="simple">gulina_o@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>МАРТОН</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>MARTON</surname><given-names>M. V.</given-names></name></name-alternatives><email xlink:type="simple">marton_m@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Белорусский государственный университет, Минск</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>10</day><month>06</month><year>2016</year></pub-date><volume>58</volume><issue>6</issue><fpage>5</fpage><lpage>8</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ЕРОВЕНКО В.А., ГУЛИНА О.В., МАРТОН М.В., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">ЕРОВЕНКО В.А., ГУЛИНА О.В., МАРТОН М.В.</copyright-holder><copyright-holder xml:lang="en">EROVENKO V.A., GULINA O.V., MARTON M.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/281">https://doklady.belnauka.by/jour/article/view/281</self-uri><abstract><p>Известно, что согласно теореме Гольдмана, нормально разрешимые операторы, вообще говоря, неустойчивы при возмущении компактными операторами. Сообщение посвящено анализу существенно полурегулярных и существенно регулярных операторов, которые сужают класс нормально разрешимых операторов, но для которых можно рассчитывать на устойчивость при компактных возмущениях.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to the stability properties of the essentially semi-regular operators and essentially regular operators in Banach space under compact commuting perturbations.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Гольдман М. А. // Докл. АН СССР. 1955. Т. 100, № 2. С. 201–204.</mixed-citation><mixed-citation xml:lang="en">Гольдман М. А. // Докл. АН СССР. 1955. Т. 100, № 2. С. 201–204.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Еровенко В. А., Мартон М. В. // Докл. НАН Беларуси. 2004. Т. 48, № 6. 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