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<front>
<journal-meta>
<journal-id journal-id-type="publisher">global-journal-of-science-frontier-research-a-physics-space-science</journal-id>
<journal-title-group>
<journal-title>Global Journal of Science Frontier Research - A: Physics &amp; Space Science</journal-title>
</journal-title-group>
<issn publication-format="print">0975-5896</issn>
<issn publication-format="electronic">2249-4626</issn>
<publisher><publisher-name>Global Journals Publishing Group Incorporated</publisher-name></publisher>
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<article-id pub-id-type="publisher-id">52628</article-id>
<title-group>
<article-title>Kinematics and Dynamics of a Particle in Gravitation Field</article-title>
<subtitle>Redefining Space (3+1) in General Relativity</subtitle>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>I</surname><given-names>Dubrovskyi</given-names></name><xref ref-type="aff" rid="aff1" />
</contrib>
</contrib-group>
<aff id="aff1">ISRAEL</aff>
<pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-04-29">
<day>29</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>22</volume>
<issue>A2</issue>
<fpage>19</fpage>
<lpage>24</lpage>
<abstract><p>It is accepted that three-dimensional physical space is a hypersurface with a Riemannian metric in four-dimensional space. The metric tensor of this three-dimensional space is defined by Einstein’s equations. Another coordinate of four-dimensional space is time. In this space, the equations of the world line of a particle with a mass m are defined under certain initial conditions: the starting point of the space and the vector of the particle’s initial velocity. This approach removes all the problems and contradictions noted in the monograph , and the resulting equations adequately describe, for example, the curvilinear motion of planets without energy change.</p></abstract>
<kwd-group kwd-group-type="author-generated">
<kwd>general theory of relativity</kwd>
<kwd>metric tensor</kwd>
<kwd>hypersurface</kwd>
<kwd>Riemannian geometry</kwd>
<kwd>geodesic line</kwd>
<kwd>gravitational field</kwd>
<kwd>equations of motion.</kwd>
</kwd-group>
<self-uri content-type="pdf" xlink:href="https://globaljournals.org/GJSFR_Volume22/2-Kinematics-and-Dynamics.pdf" />
<self-uri content-type="html" xlink:href="https://globaljournals.org/scholarly-articles/kinematics-and-dynamics-of-a-particle-in-gravitation-field-6/" />
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<title>Full Text</title>
<p>It is accepted that three-dimensional physical space is a hypersurface with a Riemannian metric in four-dimensional space. The metric tensor of this three-dimensional space is defined by Einstein&#039;s equations. Another coordinate of fourdimensional space is time. In this space, the equations of the world line of a particle with a mass m are defined under certain initial conditions: the starting point of the space and the vector of the particle&#039;s initial velocity. This approach removes all the problems and contradictions noted in the monograph [1], and the resulting equations adequately describe, for example, the curvilinear motion of planets without energy change.</p>
</sec>
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