Francfort-sur-le-Main | EPFL Graph Search

Francfort-sur-le-Main (Frankfurt am Main, ) est une ville d’Allemagne, généralement appelée simplement Francfort malgré le risque de confusion avec la ville de Francfort-sur-l'Oder. Située sur la rivière du Main, la ville est avec près de (les Francfortois) la cinquième ville d'Allemagne par sa population et la plus grande du Land de Hesse. Son aire urbaine appelée Rhin-Main – ou Région métropolitaine de Francfort-sur-le-Main – compte plus de 5,5 millions d'habitants (dont un tiers ne possède pas la nationalité allemande), ce qui en fait la dixième aire urbaine d'Europe, la sixième de l'Union européenne et la seconde d'Allemagne après celle de Cologne-Düsseldorf appelée Rhin-Rhur. Francfort est la quatrième place financière d'Europe ainsi que la ville la plus riche d'Allemagne avec un PIB par habitant de . C'est également la quatrième ville d'Europe en termes de volume d'activités financières après Londres, Paris et Amsterdam. Elle accueille notamment le siège de la Banque centrale e

Analytic stability and local convergence of translates in S-arithmetic homogeneous dynamics

Rodolphe Richard, Tomasz Jan Zamojski

We present the main result of Richard and Zamojski [14] concerning, in homogeneous dynamics, the general problem of the dynamics of sequences of translates of a certain measure in a space of S-arithmetic lattices. (C) 2019 Academie des sciences. Publie par Elsevier Masson SAS. Tous droits reserves.

ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER2019

Urbanity and Construction of the City

Alessandro Porotto

Urbanity is a real quality of an urban place. This concept means that the urbanity is inextricably related to the architecture of a place, the architecture of the city. The presence of the built environment is the first essential condition for the development of an urban area: through its constitutive elements is able to contribute directly and intentionally to the level of urbanity. In this way urban forms are not only a material product that defines a physical space, but they become quickly the causes of the transformations of urban life, which belong to other economic, political and social disciplines. In this perspective, the concept of urbanity is the capability of the built environment to produce an urban fabric with a value of identity at the urban scale, able to acquire the complexity of the legacy of the past and to develop in a coherent architecture of the city for the contemporary urban life. The paper will develop the topic of ‘urbanity’ in relation to the dynamics of the construction of the city. Especially, it will consider the experiences of social housing in Vienna and Frankfurt am Main in the Twenties of the Twentieth Century, wherein architecture was the essential tool not only for the construction of the city, but also a careful reflection in all sectors that contribute to the quality of the urban environment. Vienna and Frankfurt represent also two opposite but complementary models of city: the compact city of the Höfe and the satellite city of the Siedlung. In both cases the architecture is linked to the place, which, thanks to its stance regarding the city, confer a high value of urbanity to the urban space. Indeed, the study of Vienna and Frankfurt cases starts from the hypothesis that these two models are still efficient today. In this way these experiences have the capability to provide answers to the issues that contemporary architecture continues to pose in an urban context; in this sense, the architecture and the city today are in crisis: the assumption is that cities often have solved a large number of problems that we face today. Especially, the paper will address this analysis about the urbanity by considering three essential parameters for the construction of the city: the density, the relationship between typology and morphology, and the public spaces. For this reason asserting that ‘Urbanity is a real quality’ means considering these examples in their current urban conditions: the aim is to highlight that the urbanity characterizes an urban place, when the construction of the city becomes part of the city itself. In this sense the concept of urbanity refers to the reality of architecture: indeed, the cases are analyzed as parts of the city, which constitute a recognizable and fundamental presence in the contemporary city.

2015

Utopia and Vision. Learning from Vienna and Frankfurt

Alessandro Porotto

The article identifies and observes critically two emblematic cases of modern utopia of 1920s: Das rote Wien and Das neue Frankfurt. These two architectural experiences correspond to two alternative but complementary spatial and social models, the courtyard block (Hof) and the settlement (Siedlung). Through the historical distance today we can observe in critical way these experiences, analyzing the effects of utopian character within the contemporary city. Referring to the theoretical concepts of “utopia” and “realism” by Tafuri, the analysis tries to show the spatial elements that characterize these examples. The comparative approach highlights that today their solutions produce spatial quality at the urban and housing scale. In this way, Höfe and Siedlungen represent a “vision”. The actuality of utopia of social housing in Vienna and Frankfurt is the starting point to reflect to the contemporary architecture and collective living.

2016

Urbanity and Construction of the City

Alessandro Porotto

2015