We examine how institutional and policy reforms affect the relationship between entrepreneurship and growth. We perform Arellano-Bond GMM estimations on annual data (over the period 1990-2002) from a large group of developing countries and focus in particular on the interplay between policy and institutional reforms and entrepreneurship. We find that the joint effect of trade reform and entrepr...

For each p 2 there exists a model M of I 0 () which satisses the Count(p) principle. Furthermore, if p contains all prime factors of q there exist n; r 2 M and a bijective map f 2 dom(M) mapping f1; 2 A corollary is a complete classiication of the Count(q) versus Count(p) problem. Another corollary shows that the pigeonhole principle for injective maps does not follow from any of the Count(q) p...

In this paper we construct transitive t-designs from the linear groups L(2, q), q ≤ 23. Thereby we classify t-designs, t ≥ 2, admitting a transitive action of the linear groups L(2, q), q ≤ 23, up to 35 points and obtained numerous transitive designs, for 36 ≤ v ≤ 55. In many cases we proved the existence of t-designs with certain parameter sets. Among others we constructed t-designs with param...

While there is a significant amount of research on integration differences across countries, the integration variations across industry or market capitalization groups within a single country have been largely unexplored. The degree of integration, however, varies widely crosssectionally. In this paper, we analyze the degree of integration of Russian stocks grouped into five size and five indus...

The paper provides a new class of over-identi…cation tests that are robust to heteroscedasticity and autocorrelation of unknown forms. The tests are based on the series long run variance estimator that is designed to pivotalize the moment restrictions. We show that when the number of terms used in the series long run variance estimator is …xed, the conventional J statistic, after a simple corre...

We study the generalization of m-isometries and m-contractions (for positive integers m) to what we call a-isometries a-contractions for real numbers a. show that an operator satisfying a certain inequality in hereditary form is similar a-contraction. This improvement [9, Theorem I] based on some Banach algebras techniques. our classes are closely connected with fractional finite differences. U...

Rational expectations are at the heart of the DSGE models maintained by central banks. A key equation which governs the evolution of prices in those models is the New Keynesian Phillips (NKPC) curve, in which today‟s rate of inflation is linked to expected future inflation. Expected future inflation is in turn modeled using rational expectations, which operationally means that forecast errors a...

We prove some closed mapping theorems on k-spaces with point-countable k-networks. One of them generalizes Lašnev’s theorem. We also construct an example of a Hausdorff space Ur with a countable base that admits a closed map onto metric space which is not compact-covering. Another our result says that a k-space X with a point-countable k-network admitting a closed surjection which is not compac...