Continuity of the fenchel correspondence and continuity of polarities

AbstractThe polar cone of the limit inferior of a sequence of cones of a Banach space is shown to be the Cesari's limit superior of the sequence of polar cones in the bounded weak∗ topology. In a similar way the lower semicontinuity of a not necessarily countable family of closed convex cones is characterized in terms of Castaing's notion of pseudo-upper semicontinuity. More general results are given within the framework of convergence spaces and the pseudo-upper semicontinuity of a closed-valued multifunction is characterized as closedness with respect to a new convergence. Applications to the Young-Fenchel correspondence are pointed out

La sécurisation foncière favorise-t-elle l'aménagement rural ? Le cas de la ZGC d'Analalavaloha, Commune rurale d'Amparafaravola dans l'Ouest de l'Alaotra, Madagascar

Le Projet de Mise en Valeur et de Protection des Bassins Versants du Lac Alaotra à Madagascar (projet BV Lac) propose d'étudier les liens entre la sécurisation foncière et la mise en valeur des terres agricoles sur le cas de la ZGC d'Analalavaloha (Commune d'Amparafaravola) avec pour objectif de répondre au postulat " la sécurisation foncière est le point initial des actions d'aménagement du territoire ". Une enquête auprès de 19 agriculteurs a été réalisée ainsi qu'une analyse paysagère débouchant sur une cartographie pour illustrer les dynamiques de mises en valeur du territoire. L'obtention d'un titre foncier n'apparait pas comme une condition indispensable à la mise en valeur. Le facteur stimulant les aménagements est plutôt l'intervention des techniciens qui jouent un rôle moteur auprès des agriculteurs cherchant à valoriser au mieux leurs terres. Le thème de la sécurisation foncière nécessite une évaluation plus formelle dans un futur proche, lorsque ses effets seront plus perceptibles

SSDB spaces and maximal monotonicity

In this paper, we develop some of the theory of SSD spaces and SSDB spaces, and deduce some results on maximally monotone multifunctions on a reflexive Banach space.Comment: 16 pages. Written version of the talk given at IX ISORA in Lima, Peru, October 200

Premier recensement des Canards hivernant en Camargue

1) The first winter census of the Anatidae over the whole Camargue area was made during the winter 1954/55. The census began only on January 25 th, i. e. too late. It was made by estimation from a slow-flying air plane

The opposite of Dante's hell? The transfer of ideas for social housing at international congresses in the 1850s–1860s

With the advent of industrialization, the question of developing adequate housing for the emergent working classes became more pressing than before. Moreover, the problem of unhygienic houses in industrial cities did not stop at the borders of a particular nation-state; sometimes literally as pandemic diseases spread out 'transnationally'. It is not a coincidence that in the nineteenth century the number of international congresses on hygiene and social topics expanded substantially. However, the historiography about social policy in general and social housing in particular, has often focused on individual cases because of the different pace of industrial and urban development and is thus dominated by national perspectives. In this paper, I elaborate on transnational exchange processes and local adaptations and transformations. I focus on the transfer of the housing model of SOMCO in Mulhouse, (a French house building association) during social international congresses. I examine whether cross-national networking enabled and facilitated the implementation of ideas on the local scale. I will elaborate on the transmission and the local adaptation of the Mulhouse-model in Belgium. Convergences, divergences, and different factors that influenced the local transformations (personal choice, political situation, socioeconomic circumstances) will be taken into accoun