Results 11 to 20 of about 428,558 (290)

Non ultracontractive heat kernel bounds by Lyapunov conditions [PDF]

open access: yes, 2013
Nash and Sobolev inequalities are known to be equivalent to ultracontractive properties of heat-like Markov semigroups, hence to uniform on-diagonal bounds on their kernel densities.
Bolley, François   +2 more
core   +3 more sources

Conditional and Unconditional Deterministic Bounds on the MSE of the Non-Uniform Linear Co-centered Orthogonal Loop and Dipole Array

open access: yesENP Engineering Science Journal, 2021
The co-centered orthogonal loop and dipole (COLD) array exhibits some interesting properties, which makes it ubiquitous in the context of polarized source localization.
Tao Bao, Mohammed Nabil EL KORSO
doaj   +1 more source

HOSVD-Based Algorithm for Weighted Tensor Completion

open access: yesJournal of Imaging, 2021
Matrix completion, the problem of completing missing entries in a data matrix with low-dimensional structure (such as rank), has seen many fruitful approaches and analyses.
Zehan Chao   +2 more
doaj   +1 more source

Weighted Nash Inequalities [PDF]

open access: yes, 2010
Nash or Sobolev inequalities are known to be equivalent to ultracontractive properties of Markov semigroups, hence to uniform bounds on their kernel densities.
Bakry, Dominique   +3 more
core   +6 more sources

Closed Sets and Operators thereon: Representations, Computability and Complexity [PDF]

open access: yesLogical Methods in Computer Science, 2018
The TTE approach to Computable Analysis is the study of so-called representations (encodings for continuous objects such as reals, functions, and sets) with respect to the notions of computability they induce.
Carsten Rösnick-Neugebauer
doaj   +1 more source

Lower Bounds on Mutual Information [PDF]

open access: yes, 2010
We correct claims about lower bounds on mutual information (MI) between real-valued random variables made in A. Kraskov {\it et al.}, Phys. Rev. E {\bf 69}, 066138 (2004). We show that non-trivial lower bounds on MI in terms of linear correlations depend
David V. Foster   +4 more
core   +2 more sources

Sharp indistinguishability bounds from non-uniform approximations

open access: yes, 2021
We study the problem of distinguishing between two symmetric probability distributions over $n$ bits by observing $k$ bits of a sample, subject to the constraint that all $k-1$-wise marginal distributions of the two distributions are identical to each other. Previous works of Bogdanov et al.
openaire   +4 more sources

Quantization and Compressive Sensing [PDF]

open access: yes, 2014
Quantization is an essential step in digitizing signals, and, therefore, an indispensable component of any modern acquisition system. This book chapter explores the interaction of quantization and compressive sensing and examines practical quantization ...
A. Ai   +65 more
core   +3 more sources

Saturated Visual-Servoing Control Strategy for Nonholonomic Mobile Robots With Experimental Evaluations

open access: yesIEEE Access, 2021
A novel saturated visual control strategy for nonholonomic mobile robots is presented. The principal focus is to deal with the stabilization problem. The saturation bounds for the control actions avoid exceeding the physical restrictions of the actuators.
Ricardo Perez-Alcocer   +3 more
doaj   +1 more source

-openness of non-uniform hyperbolic diffeomorphisms with bounded -norm [PDF]

open access: yesErgodic Theory and Dynamical Systems, 2019
We study the $C^{1}$-topological properties of the subset of non-uniform hyperbolic diffeomorphisms in a certain class of $C^{2}$ partially hyperbolic symplectic systems which have bounded $C^{2}$ distance to the identity. In this set, we prove the stability of non-uniform hyperbolicity as a function of the diffeomorphism and the measure, and the ...
CHAO LIANG, KARINA MARIN, JIAGANG YANG
openaire   +1 more source

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