Computation of a universal deformation ring

We compute the universal deformation ring of an odd Galois two dimensional representation of Gal$(M/Q)$ with an upper triangular image, where $M$ is the maximal abelian pro-$p$-extension of $F_{\infty}$ unramified outside a finite set of places S, $F_{\infty}$ being a free pro-$p$-extension of a subextension $F$ of the field $K$ fixed by the kernel of the representation. We establish a link between the latter universal deformation ring and the universal deformation ring of the representation of Gal$(K_S/Q)$, where $K_S$ is the maximal pro-$p$-extension of $K$ unramified outside $S$. We then give some examples. This paper was accepted for publication in the Mathematical Proceedings of the Cambridge philosophical society (May 99)

Jules Romains’ vision of a united Europe in interwar France: legacy and ambiguities

The interwar period in Europe was characterised by a multi-faceted movement in favour of European integration. After the slaughter of the First World War, many intellectuals, writers, industrialists and politicians brought the idea of European unity to the fore and engaged in various actions, from setting up organisations to lobbying governments, to promote the unification of Europe. Much research has been carried out on the leading figures of these pro-European activities but amongst the wealth of this period other actors have tended to be forgotten. Such is the case with the French writer Jules Romains, who not only coined “Europeanism”, the word that would define the whole movement in favour of Europe, but who also actively participated in promoting a united Europe. This article seeks to introduce and discuss Romains’ ideas on Europe. It will demonstrate that his vision was very coherent within the framework of his Unanimist philosophy but was undermined by serious ambiguities. It will also demonstrate that his ideas are of great interest for what they reveal about the interwar period in France and Europe, what they bring to the genealogy of the European project, as set up after the Second World War, and for the ambiguities at the core of his concept of Europe, which are still very much at the heart of many of today’s debates about the European Union

Angular power spectrum analysis on current and future high-energy neutrino data

Astrophysical neutrino events have been measured in the last couple of years, which show an isotropic distribution, and the current discussion is their astrophysical origin. We use both isotropic and anisotropic components of the diffuse neutrino data to constrain the contribution of a broad number of extra-galactic source populations to the observed neutrino sky. We simulate up-going muon neutrino events by applying statistical distributions for the flux of extragalactic sources, and by Monte Carlo method we exploit the simulation for current and future IceCube, IceCube-Gen2 and KM3NeT exposures. We aim at constraining source populations by studying their angular patterns, for which we assess the angular power spectrum. We leave the characteristic number of sources ($N_{\star}$) as a free parameter, which is roughly the number of neutrino sources over which the measured intensity is divided. With existing two-year IceCube data, we can already constrain very rare, bright sources with $N_{\star}\lesssim$100. This can be improved to $N_{\star}\lesssim 10^4$-$10^5$ with IceCube-Gen2 and KM3NeT with ten-year exposure, constraining the contribution of BL Lacs ($N_{\star}=6\times10^{2}$). On the other hand, we can constrain weak sources with large number densities, like starburst galaxies ($N_{\star} = 10^{7}$), if we measure an anisotropic neutrino sky with future observations.Comment: 19 pages, 19 figures. Accepted by JCA

Mind the Break! Accounting for Changing Patterns of Growth during Transition

We argue that econometric analyses based on transition countries’ data can be vulnerable to structural breaks across time and/or countries. We demonstrate this argument by identifying structural breaks in growth regressions estimated with data for 25 countries and 12 years. Our method allows identification of structural breaks at a-priori unknown points in space or time. The only prior assumption is that breaks occur in relation to progress in implementing market-oriented reforms. We find robust evidence that the pattern of growth in transition has changed at least two times, yielding thus three different models of growth associated with different stages of reform. The speed with which individual countries progress through these stages differs dramatically, however.http://deepblue.lib.umich.edu/bitstream/2027.42/40029/3/wp643.pd

The Female Face of Poverty and Economic Insecurity: The Impact of the Recession on Women in Pennsylvania and Pittsburgh MSA

Analyzes the higher unemployment and poverty rates and lower wages of single mothers, especially minorities. Offers policy recommendations designed to help single mothers weather the economic downturn and maintain long-term economic self-sufficiency

The Grand Challenge for Psychoanalysis and Neuropsychoanalysis: A Science of the Subject

In 2011 we proposed that the modern advances in neurosciences would eventually push the field of psychology to an hour of truth as concerns its identity: indeed, what is psychology, if psychological functions and instances can be tied to characterized brain patterns (Bazan, 2011)? As Axel Cleeremans opens this Grand Challenge with a comparable question1, and as there is growing disagreement with the “I am my brain” paradigm, we think that the topic is indeed, 5 years later, crucially at stake. We had, in 2011, contextualized this question, as one driven by the advances in biology—anatomy in the sixteenth century, (neuro-)physiology in the nineteenth century and neurosciences today. Indeed, with each major advance, decisive moments came for psychology: in the sixteenth century, the name psychologia was launched, in the nineteenth century, psychology became a full-blown scientific field, and today, its specific identity is being questioned (Bazan, 2015). It now appears indeed that it is neuroscientists themselves, who formulate the possibility of a science of representational life, which is autonomous as regards to its biological substrates. For example, the neuroscientist Etienne Koechlin in a conference in Paris on February 2nd, 2016, gave as an alternative definition for neuroscience “the mechanisms and computational operations which govern the mental representations independently from their material substrate and its content2”. We will further propose that this autonomy is to be regarded as an organizational autonomy

An alternative to statistical discrimination theory

This paper offers a new representation of discrimination on the job market based on the most recent findings in the socio-psychological academic literature about human behaviour. Put it simply, it is assumed that the agents prefer working with people like themselves. This "affinity" principle is modelled through a distance between an individual (the candidate for a job) and the staff of the firm. Contrary to the classical view according to which discrimination results from asymmetric information, this new model provides a rationale for the presence of discriminative attitudes on the job market even when full information is available on the skill levels of all candidates for a working position.