Geodesic
Two theorems characterizing increasing k-set contraction mappings
Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 59 (1975) no. 6, pp. 749-757 Cet article a éte moissonné depuis la source Biblioteca Digitale Italiana di Matematica

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Vengono caratterizzati certi tipi di contrazioni, facendone fra l'altro applicazione per ritrovare alcuni risultati di Yamamuro [9]. 
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Singh, Kanhaya Lal. Two theorems characterizing increasing k-set contraction mappings. Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 59 (1975) no. 6, pp. 749-757. http://geodesic.mathdoc.fr/item/RLINA_1975_8_59_6_a23/

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