http://hdl.handle.net/11716/13657 Thu, 16 Apr 2026 06:39:27 GMT 2026-04-16T06:39:27Z http://hdl.handle.net/11716/13665 Report of Meeting, 15th International Conference on Functional Equations and Inequalities, Ustroń, May 19-25, 2013 Leśniak, Zbigniew (opracował); Piszczek, Magdalena (opracowała) Tue, 01 Jan 2013 00:00:00 GMT http://hdl.handle.net/11716/13665 2013-01-01T00:00:00Z http://hdl.handle.net/11716/13664 Simultaneous primality of the integers $n$ and $2n - d$ Torasso, Flavio A necessary and sufficient condition for the simultaneous primality of integers $n$ and $2n-d$ is given by means of congruences ${mod n(2n - d)}$ that hold if and only if they form a prime pair. These are used to obtain explicit primality criteria for some values of $d$, after computation of a finite number of exceptions that appear when $n$ is lower than a fixed quantity depending only on $d$. Tue, 01 Jan 2013 00:00:00 GMT http://hdl.handle.net/11716/13664 2013-01-01T00:00:00Z http://hdl.handle.net/11716/13663 On a sum form functional equation containing three unknown mappings Nath, Prem; Singh, Dhiraj Kumar The general solutions of a sum form functional equation containing three unknown mappings have been obtained without imposing any regularity condition on any of three mappings. Tue, 01 Jan 2013 00:00:00 GMT http://hdl.handle.net/11716/13663 2013-01-01T00:00:00Z http://hdl.handle.net/11716/13662 On Levinson's inequality Witkowski, Alfred We give a very simple proof of the classical Levinson inequality and generalize the result by Mercer. Tue, 01 Jan 2013 00:00:00 GMT http://hdl.handle.net/11716/13662 2013-01-01T00:00:00Z