The issue of systemic importance has received particular attention since the recent financial crisis when it came to the fore that an individual financial institution can disturb the whole financial system. Interconnectedness is considered as one of the key drivers of systemic importance....

Irina Abankina, Ph.D. in Economics, Professor, Director of the Education Development Institute, National Research University - Higher School of Economics, Moscow, Russian Federation. Email: abankinaI@hse.ru Fuad Aleskerov, Eng.D., Professor, Head of Mathematics Department, Faculty of Economics,...

Various Condorcet consistent social choice functions based on majority rule (tournament solutions) are considered in the general case, when ties are allowed: the core, the weak and strong top cycle sets, versions of the uncovered and minimal weakly stable sets, the uncaptured set, the untrapped...