Concept

Homogeneous relation

Publications associées (104)

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search

Distribution of periodic torus orbits and Duke's theorem for cubic fields

Philippe Michel

We study periodic torus orbits on spaces of lattices. Using the action of the group of adelic points of the underlying tori, we define a natural equivalence relation on these orbits, and show that the equivalence classes become uniformly distributed. This ...

2011

Sound Field Recording by Measuring Gradients

Martin Vetterli, Mihailo Kolundzija, Christof Faller

Gradient based microphone arrays, the horizontal sound field's plane wave decomposition, and the corresponding circular harmonics decomposition are reviewed. Further, a general relation between directivity patterns of the horizontal sound field gradients a ...

2010

Escola a Manresa / School in Manresa

Sergi Aguacil Moreno

The project is developed around a central courtyard in response to the site where it is located, while taking advantage of the existing slope to resolve the position of the singular buildings in relation to the system of grouping classrooms; the direct con ...

2010

Influence of the meso-structure in dynamic fracture simulation of concrete under tensile loading

Jean-François Molinari, Leonardo Snozzi

We investigate the dynamic behavior of concrete in relation to its composition within a computational framework (FEM). Concrete is modeled using a meso-mechanical approach in which aggregates and mortar are represented explicitly. Both continuum phases are ...

2010

Squatting the Sea

Harry Gugger

Chapter in the exhibition catalogue outlining the instigation and concept for the creation of the exhibition at the Biennale. The text focuses on the relation of urban development in Bahrain with the traditional and cultural connection to water and the sea ...

Kingdom of Bahrain2010

On Decision Procedures for Ordered Collections

Viktor Kuncak, Philippe Paul Henri Suter, Ruzica Piskac

We describe a decision procedure for a logic that supports 1) finite collections of elements (sets or multisets), 2) the cardinality operator, 3) a total order relation on elements, and 4) min and max operators on entire collections. Among the applications ...

2010

Universal Properties of Dark Matter Halos

Alexey Boyarsky, Oleg Ruchayskiy, Igor Tkachev

We discuss the universal relation between density and size of observed dark matter halos that was recently shown to hold on a wide range of scales, from dwarf galaxies to galaxy clusters. Predictions of cold dark matter (Lambda CDM) N-body simulations are ...

2010

Comparative study of ecohydrological streamflow probability distributions

Andrea Rinaldo, Enrico Bertuzzo, Serena Ceola, Gianluca Botter

We run a comparative study of ecohydrological models of streamflow probability distributions (pdfs), p(Q), derived by Botter et al. (2007a, 2009), against field data gathered in different hydrological contexts. Streamflows measured in several catchments ac ...

American Geophysical Union2010

3D Quality is More Than Just the Sum of 2D And Depth

Touradj Ebrahimi, Lutz Goldmann

The success of 3DTV, as one of the emerging multimedia formats, will largely depend on the quality of experience it provides to the viewer in relation to traditional media. Therefore reliable methods for quality assessment are crucial in order to optimize ...

2010

On the spectral estimates for Schrödinger type operators. The case of small local dimension

The behavior of the discrete spectrum of the Schr"odinger operator

-\D - V

, in quite a general setting, up to a large extent is determined by the behavior of the corresponding heat kernel

P(t;x,y)

t\to 0

and

t\to\infty

. If this behavior is powe ...

2010

On the spectral estimates for Schrödinger type operators. The case of small local dimension

The behavior of the discrete spectrum of the Schr"odinger operator

-\D - V

, in quite a general setting, up to a large extent is determined by the behavior of the corresponding heat kernel

P(t;x,y)

t\to 0

and

t\to\infty

. If this behavior is powe ...

2010