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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-15466</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15466</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">Cone ranks and a simple way to recognize these ranks</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Разряды конусов и простой способ распознавания этих разрядов</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="1913-12-01">
        <day>01</day>
        <month>12</month>
        <year>1913</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1913</year>
      </pub-date>
      <volume>4</volume>
      <issue>5</issue>
      <fpage>351</fpage>
      <lpage>365</lpage>
      <history>
        <date date-type="received" iso-8601-date="1913-06-28">
          <day>28</day>
          <month>06</month>
          <year>1913</year>
        </date>
        <date date-type="accepted" iso-8601-date="1913-08-20">
          <day>20</day>
          <month>08</month>
          <year>1913</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1913-12-01">
          <day>01</day>
          <month>12</month>
          <year>1913</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© E. S. Fedorov</copyright-statement>
        <copyright-year>1913</copyright-year>
        <copyright-holder xml:lang="ru">Е. С. Федоров</copyright-holder>
        <copyright-holder xml:lang="en">E. S. Fedorov</copyright-holder>
        <license xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>CC BY 4.0</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15466">https://pmi.spmi.ru/pmi/article/view/15466</self-uri>
      <abstract xml:lang="ru">
        <p>Если, приняв центр конуса за центр сферы пересечем его поверхностью этой сферы, то конус заменится сферической конопримою, почему поставленная задача сводится к распознаванию разрядов коноприм на сфере. Аналогичная ей задача определения разрядов плоских коноприм разрешается определением вида инволюции точек конопримы на экстрапрямой (бесконечно удаленной) или инволюции лучей в ее центре. В статье выводятся новые разряды коноприм и способ их распознавания.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>If, taking the center of the cone as the center of the sphere, we intersect it with the surface of this sphere, then the cone will be replaced by a spherical coneprime, which is why the task at hand is reduced to recognizing the ranks of coneprime on the sphere. A similar problem of determining the ranks of flat conoprimes is resolved by determining the type of involution of the points of the conoprime on an extra straight line (infinitely distant) or the involution of rays at its center. The article introduces new ranks of conoprimes and a method for recognizing them.</p>
      </abstract>
    </article-meta>
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        <label>1</label>
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