In finance risk capital allocation raises important questions both from theoretical and practical points of view. How to share risk of a portfolio among its subportfolios? How to reserve capital in order to hedge existing risk and how to assign this to different business units? We use an...

There lies a network structure between fixed tree and minimum cost spanning tree networks that has not been previously analyzed from a cooperative game theoretic perspective, namely, directed acyclic graph (DAG) networks. In this paper we consider the cost allocation game defined on...

Foreign currency-based loans and deposits became very popular in Central-Eastern European countries (CEECs) over the 2000-2011 period. This paper employs a structural approach to simultaneously examine the demand-side (consumer-related) and supply-side (bank-related) determinants of the quick...

In Hungary, more than 22% of the FX mortgage portfolio is non-performing and the tendency is worsening. In this paper we propose a solution to effectively reduce the credit and systemic risk inherent to this portfolio, but the proposed model can be applied to other mortgage portfolios in...

Savings behaviour seems to exhibit heterogeneity across nations, and within nations, too. Large changes in saving rates have been observed in the last decades that can be viewed as signs of the arbitrariness of saving. There is a long tradition in the savings literature that separates people...

The paper measures the impact of a wage subsidy for long term unemployed workers, using a large administrative dataset from Hungary. While such subsidies are often promoted as an efficient way to speed up the recovery of the economy or to increase demand for low skilled workers, existing...

To compare the systems of child benefits and of family tax deductions, we create a model with endogenous fertility and a basic income, financed from proportional wage taxes. The deduction's efficiency is presumably lower than the benefit's and may even be lower than that of pure basic income.

We provide a new modus operandi for the computation of the nucleolus in cooperative games with transferable utility. Using the concept of dual game we extend the theory of characterization sets. Dually essential and dually saturated coalitions determine both the core and the nucleolus in...

After the short temporary popularity of FX denominated loans, during the Great Financial and Economic Recession (2007–2013), the burden of these loans has become unaffordable for a lot of borrowers. We have designed a family of simple models to compare the cash flows of installments and the...

Adolescent romantic relationships are sources of social influence concerning educational achievement and delinquent behavior. Integrated schooling is known to induce inter-ethnic friendship relations, however, it also creates the opportunity of inter-ethnic dating. Based on contact theory,...