Bonanzinga, Maddalena and Cammaroto, Filippo and Pansera, Bruno A.: 
On Relative $\gamma_k$-Sets
 Bollettino dell'Unione Matematica Italiana Serie 8 10-B (2007), fasc. n.2, p. 445-454, Unione Matematica Italiana (English)
pdf (404 Kb), djvu (106 Kb).  | MR 2339453  | Zbl 1139.54017 
Sunto
In questo articolo viene presentata una versione relativa del $\gamma_k$-insieme introdotto in [12]. Vengono date varie caratterizzazioni di questa proprietà; in particolare una delle caratterizzazioni riguarda la teoria di Ramsey. Inoltre viene fornito un risultato che coinvolge una proprietà della corrispondente funzione tra spazi di funzioni.
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