Periodicity of free subgroup numbers modulo prime powers

We completely characterise when the sequence of free subgroup numbers of a finitely generated virtually free group is ultimately periodic modulo a given prime power.Comment: AmS-LaTeX; 18 page

Regulatory Reform in the Energy Industry of Post-Soviet Countries: Same Name, Different Content

This paper analyses the issues of regulatory reform in the energy industry of post- Soviet countries. We identify the characteristics of the transformation that these countries go through: it is the introduction of a) a new legal culture and b) a capitalist rationality of production in societies embedded in a post-Soviet institutional context. We identify existing models to which these countries' regulations could adhere. Though the industries claim to adopt an Anglo-Saxon approach, one observes in reality the emergence of a specific, post-Soviet regulatory model, characterized by the legalisation of the quasi-proprietorial rights factually enjoyed by new political and economic elites. We review some specific aspects of regulatory reform in the energy sector in Russia, Ukraine, Kazakstan and Azerbaijan. We conclude that foreign investors, politicians and advisors have to adjust to the post-Soviet reality if they want to have a lasting impact.regulatory reform, energy, post-Soviet countries

A note on higher-dimensional magic matrices

We provide exact and asymptotic formulae for the number of unrestricted, respectively indecomposable, $d$-dimensional matrices where the sum of all matrix entries with one coordinate fixed equals 2.Comment: AmS-LaTeX, 9 page

Growth, globalization, and gains from the Uruguay Round

Emphasizing the importance of evaluating the Uruguay Round in the context of a changing world economy, the authors base their projections on a model that incorporates certain economic shifts: 1) that the center of economic gravity will shift toward the South and toward Asia (a shift that is already under way and shows no signs of abating), and 2) that the pattern of comparative advantage will continue to change, with the East Asian economies gaining comparative advantage in the production of physical and human-capital-intensive products. The authors argue that these changes in the global economy significantly affect their analysis of the Uruguay round reforms, for two reasons. First, with the global distribution of trade and production shifting toward Asia, the deeper Uruguay Round cuts inthat region become more important, giving rise to a 17 percent increase in the proportionate welfare gain after implementation of tariff cuts. Second, without the Round, almost all of the bilateral quotas associated with the Multifibre Arrangement (MFA) would have become more binding and the resulting distortion would have been significantly greater. In this analysis, the global gain from MFA reform is 60 percent greater than it would have been without taking into account the effects of growth. Of course, procedures for implementation of the MFA reforms are more complex than they have conveyed for purposes of analysis. In practice, one must also consider the impact of accel quota growth under the Agreement on Textiles and Clothing. But even when the Agreement on Textiles and Clothing is implemented over the period for which projections were made, quota rents rise for many bilateral flows. This is a consequence both of shifts in comparative advantage toward the supplying countries and of simultaneous cuts in tariffs on textiles and clothing. The projections approach used here may be viewed as a logical extension of the growing econometric literature seeking to explain the determinants of economic growth through regression analysis. By offering a bridge between econometric evidence and computable general equilibrium modeling, the authors hope to combine the two approaches to help shed light on the interaction between trade reform and economic growth.Payment Systems&Infrastructure,Economic Theory&Research,Environmental Economics&Policies,Export Competitiveness,Globalization and Financial Integration,Environmental Economics&Policies,Trade and Regional Integration,Achieving Shared Growth,Economic Theory&Research,TF054105-DONOR FUNDED OPERATION ADMINISTRATION FEE INCOME AND EXPENSE ACCOUNT