Di Nasso, Mauro; Goldbring, Isaac; Jin, Renling; Leth, Steven; Lupini, Martino; Mahlburg, Karl High density piecewise syndeticity of product sets in amenable groups. (English) Zbl 1419.11017 J. Symb. Log. 81, No. 4, 1555-1562 (2016). MSC: 11B13 11B05 03H05 43A07 PDFBibTeX XMLCite \textit{M. Di Nasso} et al., J. Symb. Log. 81, No. 4, 1555--1562 (2016; Zbl 1419.11017) Full Text: DOI arXiv Link
Di Nasso, Mauro; Lupini, Martino Nonstandard analysis and the sumset phenomenon in arbitrary amenable groups. (English) Zbl 1320.03092 Ill. J. Math. 58, No. 1, 11-25 (2014). MSC: 03H05 43A07 11B05 11B13 PDFBibTeX XMLCite \textit{M. Di Nasso} and \textit{M. Lupini}, Ill. J. Math. 58, No. 1, 11--25 (2014; Zbl 1320.03092) Full Text: arXiv Euclid