@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

psr:-LFGMM85W-J
  skos:definition """Le demi-plan de Poincaré est un sous-ensemble des nombres complexes. Il a permis au mathématicien français Henri Poincaré d'éclairer les travaux du Russe Nikolaï Lobatchevski. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Demi-plan_de_Poincar%C3%A9">https://fr.wikipedia.org/wiki/Demi-plan_de_Poincar%C3%A9</a>)"""@fr, """In non-Euclidean geometry, the Poincaré half-plane model is the upper half-plane, denoted below as <b>H</b> <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML"  alttext="{\\\\displaystyle =\\\\{\\\\langle x,y\\
angle \\\\mid y>0;x,y\\\\in \\\\mathbb {R} \\\\}}">
    <semantics>
      <mrow class="MJX-TeXAtom-ORD">
        <mstyle displaystyle="true" scriptlevel="0">
          <mo>=</mo>
          <mo fence="false" stretchy="false">{</mo>
          <mo fence="false" stretchy="false">⟨<!-- ⟨ --></mo>
          <mi>x</mi>
          <mo>,</mo>
          <mi>y</mi>
          <mo fence="false" stretchy="false">⟩<!-- ⟩ --></mo>
          <mo>∣<!-- ∣ --></mo>
          <mi>y</mi>
          <mo>></mo>
          <mn>0</mn>
          <mo>;</mo>
          <mi>x</mi>
          <mo>,</mo>
          <mi>y</mi>
          <mo>∈<!-- ∈ --></mo>
          <mrow class="MJX-TeXAtom-ORD">
            <mi mathvariant="double-struck">R</mi>
          </mrow>
          <mo fence="false" stretchy="false">}</mo>
        </mstyle>
      </mrow>
      <annotation encoding="application/x-tex">{\\\\displaystyle =\\\\{\\\\langle x,y\\
angle \\\\mid y>0;x,y\\\\in \\\\mathbb {R} \\\\}}</annotation>
    </semantics>
  </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/da400e1856ed556278b83c85cf68151302aaebeb" class="mwe-math-fallback-image-inline mw-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:26.532ex; height:2.843ex;" alt="{\\\\displaystyle =\\\\{\\\\langle x,y\\
angle \\\\mid y>0;x,y\\\\in \\\\mathbb {R} \\\\}}"></span>, together with a metric, the Poincaré metric, that makes it a model of two-dimensional hyperbolic geometry.
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Poincar%C3%A9_half-plane_model">https://en.wikipedia.org/wiki/Poincar%C3%A9_half-plane_model</a>)"""@en ;
  skos:prefLabel "Poincaré half-plane model"@en, "demi-plan de Poincaré"@fr ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Poincar%C3%A9_half-plane_model>, <https://fr.wikipedia.org/wiki/Demi-plan_de_Poincar%C3%A9> ;
  skos:related psr:-PFC2HSVT-Z ;
  skos:broader psr:-NBDBFH2B-5, psr:-D4N10QHN-1 ;
  a skos:Concept ;
  skos:inScheme psr: .

psr:-D4N10QHN-1
  skos:prefLabel "géométrie non euclidienne"@fr, "non-Euclidean geometry"@en ;
  a skos:Concept ;
  skos:narrower psr:-LFGMM85W-J .

psr:-NBDBFH2B-5
  skos:prefLabel "mathematical physics"@en, "physique mathématique"@fr ;
  a skos:Concept ;
  skos:narrower psr:-LFGMM85W-J .

psr:-PFC2HSVT-Z
  skos:prefLabel "nombre complexe"@fr, "complex number"@en ;
  a skos:Concept ;
  skos:related psr:-LFGMM85W-J .

psr: a skos:ConceptScheme .