@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

psr:-K7V5TJHT-T
  skos:broader psr:-HT4QK75C-T, psr:-QP0D47D3-D ;
  skos:altLabel "Bring's surface"@en, "surface de Bring"@fr ;
  dc:modified "2024-10-18"^^xsd:date ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Bring%27s_curve> ;
  skos:inScheme psr: ;
  skos:definition """In mathematics, <b>Bring's curve</b> (also called <b>Bring's surface</b> and, by analogy with the Klein quartic, <b>the Bring sextic</b>) is the curve in <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 \\\\mathbb {P} ^{4}}">   <semantics>     <mrow class="MJX-TeXAtom-ORD">       <mstyle displaystyle="true" scriptlevel="0">         <msup>           <mrow class="MJX-TeXAtom-ORD">             <mi mathvariant="double-struck">P</mi>           </mrow>           <mrow class="MJX-TeXAtom-ORD">             <mn>4</mn>           </mrow>         </msup>       </mstyle>     </mrow>     <annotation encoding="application/x-tex">{\\\\displaystyle \\\\mathbb {P} ^{4}}</annotation>   </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0ef0f42e9d791c201ab1f11cfeaef6372d876364" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.475ex; height:2.676ex;" alt="{\\\\displaystyle \\\\mathbb {P} ^{4}}"></span> cut out by the homogeneous equations  <dl><dd><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 v+w+x+y+z=v^{2}+w^{2}+x^{2}+y^{2}+z^{2}=v^{3}+w^{3}+x^{3}+y^{3}+z^{3}=0.}">   <semantics>     <mrow class="MJX-TeXAtom-ORD">       <mstyle displaystyle="true" scriptlevel="0">         <mi>v</mi>         <mo>+</mo>         <mi>w</mi>         <mo>+</mo>         <mi>x</mi>         <mo>+</mo>         <mi>y</mi>         <mo>+</mo>         <mi>z</mi>         <mo>=</mo>         <msup>           <mi>v</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>2</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>w</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>2</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>x</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>2</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>y</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>2</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>z</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>2</mn>           </mrow>         </msup>         <mo>=</mo>         <msup>           <mi>v</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>3</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>w</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>3</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>x</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>3</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>y</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>3</mn>           </mrow>         </msup>         <mo>+</mo>         <msup>           <mi>z</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>3</mn>           </mrow>         </msup>         <mo>=</mo>         <mn>0.</mn>       </mstyle>     </mrow>     <annotation encoding="application/x-tex">{\\\\displaystyle v+w+x+y+z=v^{2}+w^{2}+x^{2}+y^{2}+z^{2}=v^{3}+w^{3}+x^{3}+y^{3}+z^{3}=0.}</annotation>   </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e5f928559bb2f3a470ef4d2e2c7fdd2b151e9f48" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:74.841ex; height:3.009ex;" alt="{\\\\displaystyle v+w+x+y+z=v^{2}+w^{2}+x^{2}+y^{2}+z^{2}=v^{3}+w^{3}+x^{3}+y^{3}+z^{3}=0.}"></span></dd></dl> It was named by Klein (2003, p.157) after Erland Samuel Bring who studied a similar construction in 1786 in a Promotionschrift submitted to the University of Lund. Note that the roots <i>x</i><sub>i</sub> of the Bring quintic <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 x^{5}+ax+b=0}">   <semantics>     <mrow class="MJX-TeXAtom-ORD">       <mstyle displaystyle="true" scriptlevel="0">         <msup>           <mi>x</mi>           <mrow class="MJX-TeXAtom-ORD">             <mn>5</mn>           </mrow>         </msup>         <mo>+</mo>         <mi>a</mi>         <mi>x</mi>         <mo>+</mo>         <mi>b</mi>         <mo>=</mo>         <mn>0</mn>       </mstyle>     </mrow>     <annotation encoding="application/x-tex">{\\\\displaystyle x^{5}+ax+b=0}</annotation>   </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d1fdbc9560849e574ab94f17f4306ffcfccee661" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:15.883ex; height:2.843ex;" alt="{\\\\displaystyle x^{5}+ax+b=0}"></span> satisfies Bring's curve since <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 \\\\sum _{i=1}^{5}x_{i}^{k}=0}">   <semantics>     <mrow class="MJX-TeXAtom-ORD">       <mstyle displaystyle="true" scriptlevel="0">         <munderover>           <mo>∑<!-- ∑ --></mo>           <mrow class="MJX-TeXAtom-ORD">             <mi>i</mi>             <mo>=</mo>             <mn>1</mn>           </mrow>           <mrow class="MJX-TeXAtom-ORD">             <mn>5</mn>           </mrow>         </munderover>         <msubsup>           <mi>x</mi>           <mrow class="MJX-TeXAtom-ORD">             <mi>i</mi>           </mrow>           <mrow class="MJX-TeXAtom-ORD">             <mi>k</mi>           </mrow>         </msubsup>         <mo>=</mo>         <mn>0</mn>       </mstyle>     </mrow>     <annotation encoding="application/x-tex">{\\\\displaystyle \\\\sum _{i=1}^{5}x_{i}^{k}=0}</annotation>   </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0100f8b0543a36f976c7aa15f1d658fad7a6e633" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.005ex; width:10.421ex; height:7.343ex;" alt="{\\\\displaystyle \\\\sum _{i=1}^{5}x_{i}^{k}=0}"></span> for <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 k=1,2,3.}">   <semantics>     <mrow class="MJX-TeXAtom-ORD">       <mstyle displaystyle="true" scriptlevel="0">         <mi>k</mi>         <mo>=</mo>         <mn>1</mn>         <mo>,</mo>         <mn>2</mn>         <mo>,</mo>         <mn>3.</mn>       </mstyle>     </mrow>     <annotation encoding="application/x-tex">{\\\\displaystyle k=1,2,3.}</annotation>   </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/43d8930575f864e1e03f41d9de4edef04e27c368" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:10.512ex; height:2.509ex;" alt="{\\\\displaystyle k=1,2,3.}"> 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Bring%27s_curve">https://en.wikipedia.org/wiki/Bring%27s_curve</a>)"""@en ;
  skos:prefLabel "courbe de Bring"@fr, "Bring's curve"@en ;
  a skos:Concept ;
  dc:created "2023-07-21"^^xsd:date .

psr: a skos:ConceptScheme .
psr:-HT4QK75C-T
  skos:prefLabel "surface de Riemann"@fr, "Riemann surface"@en ;
  a skos:Concept ;
  skos:narrower psr:-K7V5TJHT-T .

psr:-QP0D47D3-D
  skos:prefLabel "courbe algébrique"@fr, "algebraic curve"@en ;
  a skos:Concept ;
  skos:narrower psr:-K7V5TJHT-T .

