Analyst behaviour: the geography of social interaction

An analyst who works in Germany is more likely to publish a high (low) price target regarding a DAX30 stock if other Germany based analysts are also optimistic (pessimistic) about the same stock. This finding is not biased by the fact that DAX30 companies are headquartered in Germany. In times of bull markets, price targets of analysts who regularly exchange their opinion are higher correlated compared to other analysts. This effect vanishes in a bearish market environment. This suggests that communication among analysts indeed plays an important role. However, analysts’ incentives induce them not to deviate too much from the overall average during an economic downturn

Universal localisations and tilting modules for finite dimensional algebras

We study universal localisations, in the sense of Cohn and Schofield, for finite dimensional algebras and classify them by certain subcategories of our initial module category. A complete classification is presented in the hereditary case as well as for Nakayama algebras and local algebras. Furthermore, for hereditary algebras, we establish a correspondence between finite dimensional universal localisations and finitely generated support tilting modules. In the Nakayama case, we get a similar result using $\tau$-tilting modules, which were recently introduced by Adachi, Iyama and Reiten

From contract to treaty: the legal transformation of the Spanish succession (1659-1713)

The problem of the Spanish Succession kept the European diplomatic system in suspense from 1659 until 1713. Statesmen and diplomats tackled the question. Their practical vision of the law is a necessary complement to legal doctrine. Louis XIV and Emperor Leopold I used incompatible and absolute claims, which started in private law and Spanish succession law. At the Peace of Utrecht, these arguments completely dissolved. The War of The Spanish Succession thus not only redesigned the political map of Europe. It altered the norm hierarchy in public law, strengthening international law as the framework of the “Société des Princes”

PS: À qui la faute ?

Review of the French Parti Socialiste's ideological evolution at the occasion of three years Hollande presidency and the Party Conference in Poitiers

Ongoing magnetic monopole searches with IceCube

The IceCube collaboration has instrumented a cubic kilometer of ice with $5160$ photo-multipliers. While mainly developed to detect Cherenkov light, any visible light can be used to detect particles within the ice. Magnetic monopoles are hypothetical particles predicted by many theories that extend the Standard model of Particle Physics. They are carriers of a single elementary magnetic charge. For this particle, different light production mechanisms dominate from direct Cherenkov light at highly relativistic velocities $\left(>0.76\,c\right)$, indirect Cherenkov light at mildly relativistic velocities $\left(\approx 0.5\,c \textrm{ to } 0.76\,c\right)$, luminescence light at low relativistic velocities $\left( \gtrsim 0.1\,c \textrm{ to } 0.5\,c\right)$, as well as catalysis of proton decay at non relativistic velocities $\left(\lesssim 0.1\,c\right)$. For each of this speed ranges, searches for magnetic monopoles at the IceCube experiment are either in progress or they have already set the world's best limits on the flux of magnetic monopoles. A summary of these searches will be presented, outlining already existing results as well as methods used by the currently conducted searches.Comment: Conference proceedings from 6th International Conference on New Frontiers in Physics (ICNFP 2017) from August 17th to 29th of 2017 at the Conference Center of the Orthodox Academy of Creta (OAC) in Kolymbari (Crete), Greece, 8 pages, 8 figure

The Twelve Years Truce (1609). Peace, Truce, War, and Law in the Low Countries at the Turn of the 17th Century

Book review of LESAFFER (Randall), ed., The Twelve Years Truce (1609) : peace, truce, war, and law in the Low Countries at the turn of the 17th century, Leiden/Boston, Martinus Nijhoff/Brill, 2014, IX + 297 p. (Legal History Library, 13; Studies in the History of International Law, 6) ISBN 9789004274914, discussing papers by Bram De Ridder and Violet Soen, Alain Wijffels, Werner Thomas, Georges Martyn and Beatrix Van Erp-Jacobs