Геометрия параллелепипедов находит отражение в таких разделах математики как комбинаторный анализ, полилинейная алгебра и алгебраическая топология....

In 1975, M. M. Choban [5] introduced a new topology on the set of all closed subsets of a topological space, similar to the but weaker than it. In 1998, G. Dimov and D. Vakarelov [8] used a generalized version of this new topology, calling it . The present paper is devoted to a detailed study of...

For economists, the task of paramount importance is not only to generalize the experience of the effectiveness of previously introduced economic sanctions but also to study all kinds of effects (both positive and negative) of modern large-scale economic sanctions against Russia. The term...

The dramatic transition from Communism to market economies across Asia and Europe started in the Chinese countryside in the 1970s. Since then more than a billion of people, many of them very poor, have been affected by radical reforms in agriculture. However, there are enormous differences in...