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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15410</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15410</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Статьи</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Articles</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Expression of the double transformation of symbols</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Выражение двойного преобразования символов</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Fedorov</surname>
            <given-names>E. S.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Федоров</surname>
              <given-names>Е. С.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Fedorov</surname>
              <given-names>E. S.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1910-05-01">
        <day>01</day>
        <month>05</month>
        <year>1910</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1910</year>
      </pub-date>
      <volume>2</volume>
      <issue>5</issue>
      <fpage>397</fpage>
      <lpage>398</lpage>
      <history>
        <date date-type="received" iso-8601-date="1909-11-28">
          <day>28</day>
          <month>11</month>
          <year>1909</year>
        </date>
        <date date-type="accepted" iso-8601-date="1910-01-16">
          <day>16</day>
          <month>01</month>
          <year>1910</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1910-05-01">
          <day>01</day>
          <month>05</month>
          <year>1910</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1910 Е. С. Федоров</copyright-statement>
        <copyright-statement xml:lang="en">© 1910 E. S. Fedorov</copyright-statement>
        <copyright-year>1910</copyright-year>
        <copyright-holder xml:lang="ru">Е. С. Федоров</copyright-holder>
        <copyright-holder xml:lang="en">E. S. Fedorov</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15410">https://pmi.spmi.ru/pmi/article/view/15410</self-uri>
      <abstract xml:lang="ru">
        <p>При решении задач о правильной установке кристаллов (как основе для кристаллохимического анализа) по­стоянно приходится прибегать к преобразованию символов, причем проверка этого решения связана со вторым и дальнейшими преобразованиями. Возникает задача выразить окончательные символы в исходных. Вместо известной формулы преобразования мы на практике пользуемся сокращенным выражением в виде детерминанта (см. статью).</p>
      </abstract>
      <abstract xml:lang="en">
        <p>When solving problems about the correct orientation of crystals (as a basis for crystal-chemical analysis), one constantly has to resort to symbol transformation, while the verification of this solution is associated with the second and further transformations. The task arises to express the final symbols in terms of the original ones. Instead of the well-known transformation formula, in practice we use an abbreviated expression in the form of a determinant (see the article).</p>
      </abstract>
    </article-meta>
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