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

psr:-HX2VX066-P
  skos:prefLabel "functional analysis"@en, "analyse fonctionnelle"@fr ;
  a skos:Concept ;
  skos:narrower psr:-Q58PV01Q-3 .

psr: a skos:ConceptScheme .
psr:-G1JK0SZ9-C
  skos:prefLabel "polynôme de Tchebychev"@fr, "Chebyshev polynomial"@en ;
  a skos:Concept ;
  skos:related psr:-Q58PV01Q-3 .

psr:-LQQ16HC3-R
  skos:prefLabel "Favard's theorem"@en, "théorème de Favard"@fr ;
  a skos:Concept ;
  skos:broader psr:-Q58PV01Q-3 .

psr:-Q58PV01Q-3
  skos:definition """En mathématiques, la théorie de l'approximation concerne la façon dont les fonctions peuvent être approchées par de plus simples fonctions, en donnant une caractérisation quantitative des erreurs introduites par ces approximations. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Th%C3%A9orie_de_l%27approximation">https://fr.wikipedia.org/wiki/Th%C3%A9orie_de_l%27approximation</a>)"""@fr, """ In mathematics, approximation theory is concerned with how functions can best be approximated with simpler functions, and with quantitatively characterizing the errors introduced thereby. What is meant by best and simpler will depend on the application. A closely related topic is the approximation of functions by generalized Fourier series, that is, approximations based upon summation of a series of terms based upon orthogonal polynomials. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Approximation_theory">https://en.wikipedia.org/wiki/Approximation_theory</a>)"""@en ;
  a skos:Concept ;
  skos:exactMatch <https://fr.wikipedia.org/wiki/Th%C3%A9orie_de_l%27approximation>, <https://en.wikipedia.org/wiki/Approximation_theory> ;
  skos:broader psr:-HX2VX066-P ;
  skos:inScheme psr: ;
  skos:related psr:-G1JK0SZ9-C ;
  skos:narrower psr:-LQQ16HC3-R ;
  skos:prefLabel "approximation theory"@en, "théorie de l'approximation"@fr .