Polymatroids and polyquantoids

When studying entropy functions of multivariate probability distributions, polymatroids and matroids emerge. Entropy functions of pure multiparty quantum states give rise to analogous notions, called here polyquantoids and quantoids. Polymatroids and polyquantoids are related via linear mappings and duality. Quantum secret sharing schemes that are ideal are described by selfdual matroids. Expansions of integer polyquantoids to quantoids are studied and linked to that of polymatroids

Downward Wage Rigidities in Slovakia

The degree of labor market flexibility is especially important for countries considering entry into monetary union. The aim of this article is to assess the extent of wage rigidities in Slovakia. The novelty of this paper is in the employment of Holden andWulfsberg (2009) approach to the micro data. Firstly, we apply the original methodology on industrial level data drawn from recent decade. The results obtained from sectoral data are ambiguous for Slovakia. Secondly, we turn to micro-approach, where we apply slightly modified methodology on company level data. The estimated extent of both nominal and real rigidities is relatively small. We conclude that flexible hourly wages favored the euro adoption in 2009.Nominal and real wage rigidity, Slovakia