Remarks on subsequences, subseries and rearrangements
M. Bhaskara Rao, K. P. S. Bhaskara Rao, Bapuji Rao · Proceedings of the American Mathematical Society · 1977
In this paper we shall evaluate the measure theoretic, as well as topological (Baire category theoretic) complexity of the set of convergent subsequences of a given sequence of real numbers. Similar problems regarding subseries and rearrangements of a given series are also discussed.