Concept

Classification of finite simple groups

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Evaluation of Power System Lightning Performance—Part II: Application to an Overhead Distribution Network

The paper aims at defining a methodology to evaluate the lightning performance of a system of overhead distribution lines. As is well known, the evaluation of the lightning performance relies generally on a Monte Carlo approach that generates many differen ...

Institute of Electrical and Electronics Engineers2017

Amortisseur de porte combiné à un récupérateur d’énergie

Les dispositifs mécaniques de rappel automatique de porte sont souvent constitués d’éléments simples. Il s’agit principalement d’un ressort et d’un amortisseur. Le ressort est comprimé à l’ouverture de la porte. La fermeture est assurée par l’énergie ainsi ...

2016

The Minimal Faithful Permutation Degree For A Direct Product Obeying An Inequality Condition

Neil John Saunders

The minimal faithful permutation degree (G) of a finite group G is the least nonnegative integer n such that G embeds in the symmetric group Sym(n). Clearly (G x H) (G) + (H) for all finite groups G and H. In 1975, Wright ([10]) proved that equality occurs ...

Taylor & Francis Inc2016

Computational Aspects of Jacobians of Hyperelliptic Curves

Alina Dudeanu

Nowadays, one area of research in cryptanalysis is solving the Discrete Logarithm Problem (DLP) in finite groups whose group representation is not yet exploited. For such groups, the best one can do is using a generic method to attack the DLP, the fastest ...

EPFL2016

Critiquing as an alternative to generating concept maps to support knowledge integration processes

Beat Adrian Schwendimann

As constructing concept maps from scratch can be time consuming, this study explores critiquing given concept maps with deliberate errors as an alternative. A form of concept map that distinguishes between different levels, called Knowledge Integration Map ...

Springer2016

Critiquing as an Alternative to Generating Concept Maps to Support Knowledge Integration Processes

Beat Adrian Schwendimann

Springer Int Publishing Ag2016

The mixing time of the Dikin walk in a polytope-A simple proof

Nisheeth Vishnoi

We study the mixing time of the Dikin walk in a polytope a random walk based on the log-barrier from the interior point method literature. This walk, and a close variant, were studied by Narayanan (2016) and Kannan-Narayanan (2012). Bounds on its mixing ti ...

Elsevier Science Bv2016

Equivalences between blocks of cohomological Mackey algebras

Baptiste Thierry Pierre Rognerud

Let G be a finite group and (K, O, k) be a p-modular system “large enough”. Let R = O or k. There is a bijection between the blocks of the group algebra RG and the central primitive idempotents (the blocks) of the so-called cohomological Mackey algebra coμ ...

Springer Verlag2015

Equivalences between blocks of p-local Mackey algebras

Baptiste Thierry Pierre Rognerud

Let G be a finite group and (K, O, k) be a p-modular system. Let R = O or k. There is a bijection between the blocks of the group algebra and the blocks of the so-called p-local Mackey algebra mu(1)(R)(G). Let b be a block of RG with abelian defect group D ...

Elsevier2015

Amenable hyperbolic groups

Nicolas Monod

We give a complete characterization of the locally compact groups that are nonelementary Gromov-hyperbolic and amenable. They coincide with the class of mapping tori of discrete or continuous one-parameter groups of compacting automorphisms. We moreover gi ...

European Mathematical Soc2015