منابع مشابه
CHAPITRE X Les ensembles constructibles
Résumé. • De même qu’on introduit le sous-corps premier d’un corps K comme la clôture de {0, 1} par les opérations de corps, on introduit un plus petit modèle intérieur L d’un modèle de ZF comme clôture des ordinaux par les opérations de Gödel. Les éléments de L sont appelés les ensembles constructibles. • La propriété d’être un ensemble constructible est absolue, c’est-à-dire préservée par pas...
متن کاملUn modèle de recherche de fichiers personnels par contexte dans les systèmes d'étiquetage
Recently, tagging systems are widely used on the Internet. On desktops, tags are also supported by some semantic file systems and desktop search tools. In this paper, we focus on personal tag organization to enhance personal file retrieval. Our approach is based on the notion of context. A context is a set of tags assigned to a file by a user. Based on tag popularity and relationships between t...
متن کاملChapitre 8: Simulation for Product Driven Systems
Due to globalisation, companies have to become more and more agile in order to face demand fluctuations and growing customisation needs. Indeed, the mass production market moves to a mass customization one, which could be defined as the production of a wide variety of end products at a low unit cost. This market typology evolution implies to ensure a quick answer to customers needs. The main pr...
متن کاملCHAPITRE IV : Mesure de la réactivité atmosphérique totale avec les radicaux hydroxyles à Paris pendant la campagne
Hydroxyl radicals play a central role in the troposphere as they control the lifetime of many trace gases. Measurement of OH reactivity (OH loss rate) is important to better constrain the OH budget and also to evaluate the completeness of measured VOC budget. Total atmospheric OH reactivity was measured for the first time in an European Megacity: Paris and its surrounding areas with 12 million ...
متن کاملJean-charles Faugère Chapitre 1 Introduction Générale
We present an efficient algorithm for the transformation of a Gröbner basis of a zero–dimensional ideal with respect to any given ordering into a Gröbner basis with respect to any other ordering. This algorithm is polynomial in the degree of the ideal. In particular the lexicographical Gröbner basis can be obtained by applying this algorithm after a total degree Gröbner basis computation: it is...
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ژورنال
عنوان ژورنال: Revue d’histoire des chemins de fer
سال: 2004
ISSN: 0996-9403,1775-4224
DOI: 10.4000/rhcf.1321