Episciences.org
Not a member yet
6707 research outputs found
Sort by
Spectral problem for the complex mKdV equation: singular manifold method and Lie symmetries
No full textThis article addresses the study of the complex version of the modifiedKorteweg-de Vries equation using two different approaches. Firstly, thesingular manifold method is applied in order to obtain the associated spectralproblem, binary Darboux transformations and -functions. The second partconcerns the identification of the classical Lie symmetries for the spectralproblem. The similarity reductions associated to these symmetries allow us toderive the reduced spectral problems and first integrals for the ordinarydifferential equations arising from such reductions.Comment: This article is intended to be published in the special issue dedicated to Prof. Decio Levi (in Open Communications in Nonlinear Mathematical Physics
Representing polynomial of ST-CONNECTIVITY
No full textWe show that the coefficients of the representing polynomial of any monotoneBoolean function are the values of the M\"obius function of an atomisticlattice related to this function. Using this we determine the representingpolynomial of any Boolean function corresponding to a ST-CONNECTIVITY problemin acyclic quivers (directed acyclic multigraphs). Only monomials correspondingto unions of paths have non-zero coefficients which are where isan easily computable function of the quiver corresponding to the monomial (itis the number of plane regions in the case of planar graphs). We determine thatthe number of monomials with non-zero coefficients for the two-dimensional grid connectivity problem is .Comment: 13 pages, 6 figure
Elimination distance to bounded degree on planar graphs
No full textWe study the graph parameter elimination distance to bounded degree, whichwas introduced by Bulian and Dawar in their study of the parameterizedcomplexity of the graph isomorphism problem. We prove that the problem isfixed-parameter tractable on planar graphs, that is, there exists an algorithmthat given a planar graph and integers and decides in time for a computable function~ and constant whether theelimination distance of to the class of degree graphs is at most .Comment: 12 pages, 1 figur
Compositional Confluence Criteria
No full textWe show how confluence criteria based on decreasing diagrams are generalizedto ones composable with other criteria. For demonstration of the method, theconfluence criteria of orthogonality, rule labeling, and critical pair systemsfor term rewriting are recast into composable forms. We also show how such acriterion can be used for a reduction method that removes rewrite rulesunnecessary for confluence analysis. In addition to them, we prove thatToyama's parallel closedness result based on parallel critical pairs subsumeshis almost parallel closedness theorem
One Belt One Road : une nouvelle architecture des flux mondiaux sous influence chinoise
No full textChina’s One Belt One Road (OBOR) strategy was launched in September 2013 by Xi Jinping. It is a global transports infrastructure strategy that covers both land (road and rail) and sea roads by connecting ports from Asia to Europe through Africa. With a budget of more than 1,400 billion dollars, it is one of the most important strategies on a global scale. The purpose of this article is firstly to characterize this strategy, from its foundations to the actual enactment modalities. It is then to propose an interpretation based on a Braudelian reading in terms of world economy and hegemonic posture leading to the emergence of new asian global value chains.La stratégie chinoise One Belt One Road (OBOR) a été lancée en septembre 2013 par Xi Jinping. Il s’agit d’une stratégie globale de développement d’infrastructures, notamment de transport, et de coopérations. Elle concerne aussi bien les voies terrestres (routes et fer) que les voies maritimes par la connexion de ports depuis l’Asie jusqu’à l’Europe en passant par l’Afrique. Dotée d’un budget de plus de 1 400 milliards de dollars, elle est l’une des plus importantes stratégies initiées à l’échelle mondiale. L’objet de cet article, écrit en 2018, est d’abord de caractériser cette stratégie, depuis ses fondements jusqu’aux modalités de sa mise en acte. Il s’agit ensuite d’en proposer une interprétation fondée sur une lecture braudélienne en termes d’économie-monde et de posture hégémonique conduisant à l’émergence de nouvelles global value chains asiatiques
Perspectives on interpersonal utility comparisons: an analysis of selected models
No full textRecently, new models for comparing the strength of individual preferences have been proposed. This perspective article discusses these models within the context of different accounts of how people attribute mental states to others. The paper highlights that the new models share a common shortcoming with Harsanyi’s Equiprobability Model of Moral Value Judgments, which is the inability to facilitate interpersonal comparisons of preference strengths
Difference varieties and the Green-Lazarsfeld Secant Conjecture
No full textThe Green-Lazarsfeld Secant Conjecture is a generalization of Green'sConjecture on syzygies of canonical curves to the cases of arbitrary linebundles. We establish the Green-Lazarsfeld Secant Conjecture for curves ofgenus g in all the divisorial case, that is, when the line bundles that fail tobe (p+1)-very ample form a divisor in the Jacobian of the curve.Comment: 12 pages. Final version, to appear in the Epiga volume dedicated to Claire Voisi
Study on the Domain Adaption of Korean Speech Act using Daily Conversation Dataset and Petition Corpus
No full textIn Korean, quantitative speech act studies have usually been conducted on single utterances with unspecified sources. In this study, we annotate sentences from the National Institute of Korean Language's Messenger Corpus and the National Petition Corpus, as well as example sentences from an academic paper on contemporary Korean vlogging, and check the discrepancy between human annotation and model prediction. In particular, for sentences with differences in locutionary and illocutionary forces, we analyze the causes of errors to see if stylistic features used in a particular domain affect the correct inference of speech act. Through this, we see the necessity to build and analyze a balanced corpus in various text domains, taking into account cases with different usage roles, e.g., messenger conversations belonging to private conversations and petition corpus/vlogging script that have an unspecified audience
Liste des éditrices et rédactrices en chef de la presse périodique russophone dans l’Empire russe, 1763-1890
No full textCette liste recense les éditrices et rédactrices en chef de la presse périodique russophone dans l'Empire russe de 1763 à 1890. Chaque notice comporte dans sa première partie des données biographiques suivies d'une brève énumération des activités liées à la production et la médiation littéraires. La deuxième partie des notices est dédiée aux activités d'éditrice et de rédactrice en chef : y sont précisés la période pendant laquelle ces activités ont été pratiquées, les titres des périodiques concernés, la fréquence et le lieu de leur parution
Universality for tropical and logarithmic maps
No full textWe prove that every toric monoid appears in a space of maps from tropicalcurves to an orthant. It follows that spaces of logarithmic maps to Artin fansexhibit arbitrary toric singularities: a virtual universality theorem forlogarithmic maps to pairs. The target rank depends on the chosen singularity:we show that the cone over the 7-gon never appears in a space of maps to a rank1 target. We obtain similar results for tropical maps to affine space.Comment: 22 pages. Comments welcome. v4: Published version in journal styl