396 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR154 papers
- Paris-Est SupFR126 papers
- École nationale des ponts et chausséesFR92 papers
- CERMICSFR71 papers
- Institut national de recherche en sciences et technologies du numériqueFR64 papers
- Laboratoire d'Informatique Gaspard-MongeFR46 papers
- Laboratoire d’Analyse et de Mathématiques AppliquéesFR44 papers
- Université Paris-Est CréteilFR40 papers
- Université Paris-Est Marne-la-ValléeFR39 papers
- Laboratoire NavierFR33 papers
- Laboratoire Modélisation et Simulation Multi-EchelleFR29 papers
- Université Paris DiderotFR15 papers
27 papers · 1 filter
Invariant-based approach to symmetry class detection
Nicolas Auffray, Boris Kolev, Michel Petitot
In this paper, the problem of the identification of the symmetry class of a given tensor is asked. Contrary to classical approaches which are based on the spectral properties of th…
Cyclicity in rank-one perturbation problems
Evgeny Abakumov, Constanze Liaw, Alexei Poltoratski
The property of cyclicity of a linear operator, or equivalently the property of simplicity of its spectrum, is an important spectral characteristic that appears in many problems of…
A second-order pressure-accurate finite-difference scheme for the Stokes problem with rigid non-conforming boundaries
Abdelkader Hammouti, Anaël Lemaître
We present a finite-difference scheme which solves the Stokes problem in the presence of curvilinear non-conforming interfaces and provides second-order accuracy on physical field…
Conformal use of retarded Green's functions for the Maxwell field in de Sitter space
S. Faci, E. Huguet, J. Renaud
We propose a new propagation formula for the Maxwell field in de Sitter space which exploit the conformal invariance of this field together with a conformal gauge condition. This f…
A new model for shallow viscoelastic fluids
François Bouchut, Sébastien Boyaval
We propose a new reduced model for gravity-driven free-surface flows of shallow elastic fluids. It is obtained by an asymptotic expansion of the upper-convected Maxwell model for e…
Source coding with escort distributions and Renyi entropy bounds
J. -F. Bercher
We discuss the interest of escort distributions and Rényi entropy in the context of source coding. We first recall a source coding theorem by Campbell relating a generalized measur…
Escort entropies and divergences and related canonical distribution
J. -F. Bercher
We discuss two families of two-parameter entropies and divergences, derived from the standard Rényi and Tsallis entropies and divergences. These divergences and entropies are found…
Detection of a sparse submatrix of a high-dimensional noisy matrix
Cristina Butucea, Yuri I. Ingster
We observe a matrix with i.i.d. in , and . We test the null hypothesis fo…
Global regularity for the supercritical dissipative quasi-geostrophic equation with large dispersive forcing
M. Cannone, C. Miao, L. Xue
We consider the 2D quasi-geostrophic equation with supercritical dissipation and dispersive forcing in the whole space. When the dispersive amplitude parameter is large enough, we…
Smoothness and asymptotic estimates of densities for SDEs with locally smooth coefficients and applications to square root-type diffusions
Stefano De Marco
We study smoothness of densities for the solutions of SDEs whose coefficients are smooth and nondegenerate only on an open domain . We prove that a smooth density exists on …
Piecewise linear car-following modeling
Nadir Farhi
We present a traffic model that extends the linear car-following model as well as the min-plus traffic model (a model based on the min-plus algebra). A discrete-time car-dynamics d…
A Mean-Reverting SDE on Correlation matrices
Abdelkoddousse Ahdida, Aurélien Alfonsi
We introduce a mean-reverting SDE whose solution is naturally defined on the space of correlation matrices. This SDE can be seen as an extension of the well-known Wright-Fisher dif…
Bergman completeness is not a quasi-conformal invariant
Xu Wang
We show that Bergman completeness is not a quasi-conformal invariant for general Riemann surfaces.
Tail estimates for norms of sums of log-concave random vectors
Radosław Adamczak, Rafał Latała, Alexander E. Litvak +2
We establish new tail estimates for order statistics and for the Euclidean norms of projections of an isotropic log-concave random vector. More generally, we prove tail estimates f…
Chevet type inequality and norms of submatrices
Radosław Adamczak, Rafał Latała, Alexander E. Litvak +2
We prove a Chevet type inequality which gives an upper bound for the norm of an isotropic log-concave unconditional random matrix in terms of expectation of the supremum of "symmet…
Electronic levels and electrical response of periodic molecular structures from plane-wave orbital-dependent calculations
Yanli Li, Ismaila Dabo
Plane-wave electronic-structure predictions based upon orbital-dependent density-functional theory (OD-DFT) approximations, such as hybrid density-functional methods and self-inter…
A Hamilton-Jacobi approach to junction problems and application to traffic flows
Cyril Imbert, Régis Monneau, Hasnaa Zidani
This paper is concerned with the study of a model case of first order Hamilton-Jacobi equations posed on a "junction", that is to say the union of a finite number of half-lines wit…
Negative thermal conductivity of chains of rotors with mechanical forcing
Alessandra Iacobucci, Frederic Legoll, Stefano Olla +1
We consider chains of rotors subjected to both thermal and mechanical forcings,in a nonequilibrium steady-state. Unusual nonlinear profiles of temperature and velocities are observ…
Relaxing Tight Frame Condition in Parallel Proximal Methods for Signal Restoration
Nelly Pustelnik, Jean-Christophe Pesquet, Caroline Chaux
A fruitful approach for solving signal deconvolution problems consists of resorting to a frame-based convex variational formulation. In this context, parallel proximal algorithms a…
On inelastic hydrogen atom collisions in stellar atmospheres
P. S. Barklem, A. K. Belyaev, M. Guitou +3
The influence of inelastic hydrogen atom collisions on non-LTE spectral line formation has been, and remains to be, a significant source of uncertainty for stellar abundance analys…
The distribution of cycles in breakpoint graphs of signed permutations
Simona Grusea, Anthony Labarre
Breakpoint graphs are ubiquitous structures in the field of genome rearrangements. Their cycle decomposition has proved useful in computing and bounding many measures of (dis)simil…
On-line construction of position heaps
Gregory Kucherov
We propose a simple linear-time on-line algorithm for constructing a position heap for a string [Ehrenfeucht et al, 2011]. Our definition of position heap differs slightly from the…
Linear pattern matching on sparse suffix trees
Roman Kolpakov, Gregory Kucherov, Tatiana Starikovskaya
Packing several characters into one computer word is a simple and natural way to compress the representation of a string and to speed up its processing. Exploiting this idea, we pr…
Robustness of avalanche dynamics in sheared amorphous solids as probed by transverse diffusion
Joyjit Chattoraj, Christiane Caroli, Anaël Lemaître
Using numerical simulations, we perform an extensive finite-size analysis of the transverse diffusion coefficient in a sheared 2D amorphous solid, over a broad range of strain rate…