The Role of Regional Development Policies in Reducing Territorial Disparities

This paper aim is to analyze the variance of the net nominal monthly earnings by counties and development regions using the most recent estimated statistics from Statistical yearbook 2007. We applied one-factor analysis of variance – ANOVA. We considered that the „Romanian development regions” is a factor of interest and we tested if it has a significant effect on the “net nominal monthly earnings” regional differences.economic development; social development; competitiveness; growth; regional development.

Computing isogenies between Jacobian of curves of genus 2 and 3

We present a quasi-linear algorithm to compute isogenies between Jacobians of curves of genus 2 and 3 starting from the equation of the curve and a maximal isotropic subgroup of the l-torsion, for l an odd prime number, generalizing the V\'elu's formula of genus 1. This work is based from the paper "Computing functions on Jacobians and their quotients" of Jean-Marc Couveignes and Tony Ezome. We improve their genus 2 case algorithm, generalize it for genus 3 hyperelliptic curves and introduce a way to deal with the genus 3 non-hyperelliptic case, using algebraic theta functions.Comment: 34 page