Geodesic
On Relative $\gamma_k$-Sets
Bollettino della Unione matematica italiana, Série 8, 10B (2007) no. 2, pp. 445-454.

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In this note we show a relative version of $\gamma_k$-set introduced and studied in [12]. We give several characterizations of this property; in particular one of the characterizations is Ramsey theoretical. Also we give a result involving a property of the corresponding mapping between function spaces.
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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Bonanzinga, Maddalena; Cammaroto, Filippo; Pansera, Bruno A. On Relative $\gamma_k$-Sets. Bollettino della Unione matematica italiana, Série 8, 10B (2007) no. 2, pp. 445-454. http://geodesic.mathdoc.fr/item/BUMI_2007_8_10B_2_a12/

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