In this paper, an EPQ-based inventory policy for an item is presented with stock-dependent demand during two trade credit periods. In addition, there is a provi
In the present work we show how different ways to solve biquadratic equations can lead us to different representations of its solutions. A particular equation w
Some new construction methods of the optimum chemical balance weighing designs and pairwise efficiency and variance balanced designs are proposed, which are bas
This article concerns the quantum superintegrable system obtained by Tremblay and Winternitz, which allows the separation of variables in polar coordinates and