René-Louis Baire

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René-Louis Baire

René-Louis Baire (Parigi, 21 gennaio 1874 – Chambéry, 5 luglio 1932) è stato un matematico francese, noto per i suoi lavori sulla continuità, sui numeri irrazionali e sul concetto di limite.

Baire si è laureato all'École Normale Supérieure nel 1895, ed ha ivi ottenuto il Ph.D. nel 1899 con un'importante tesi riguardante le proprietà delle funzioni continue e limitate. Nel 1902 ha ottenuto la cattedra all'Università di Montpellier, nel 1905 a Digione.

René Baire ha alternato la ricerca universitaria all'insegnamento nei licei, ed ha effettuato solo un numero limitato di pubblicazioni, sebbene di notevole rilevanza. La sua carriera accademica è stata resa difficile anche dalla sue cattive condizioni di salute. Diverse strutture topologiche portano il suo nome. Fra l'altro, si deve a Baire l'introduzione della nozione di continuità per funzioni a valori reali, ottenuta dalla simultaneità di semicontinuità inferiore e superiore.

Tra i suoi lavori più noti Théorie des nombres irrationels, des limites et de la continuité (1905), e Leçons sur les théories générales de l'analyse (1908), divenuto un classico della didattica dell'analisi matematica.

Bibliografia

  • (FR) Gispert H., La théorie des ensembles en France avant la crise de 1905 : Baire, Borel, Lebesgue ... et tous les autres, Rev. Histoire Math. 1 (1) (1995), pag. 39-81.

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Collegamenti esterni

Controllo di autoritàVIAF (EN) 51730807 · ISNI (EN) 0000 0001 0900 4815 · SBN MILV140802 · LCCN (EN) n85810717 · GND (DE) 119004186 · BNE (ES) XX1216067 (data) · BNF (FR) cb12171196f (data) · J9U (EN, HE) 987007440920405171
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