2 papers
math.NT2025
Good Ramanujan Expansions: A suitably enhanced decay of coefficients has important consequences
Giovanni Coppola
In this self-contained short note, we introduce the new definition of Good Ramanujan Expansion, say G.R.E., for a fixed arithmetic function , building upon a good decay of its c…
math.NT2023
General elementary methods meeting elementary properties of correlations
Giovanni Coppola
This is a kind of survey on properties of correlations of two very general arithmetic functions, mainly from the point of view of Ramanujan expansions. In fact, our previous papers…