Results 91 to 100 of about 425 (156)

A bio-inspired geometric model for sound reconstruction. [PDF]

open access: yesJ Math Neurosci, 2021
Boscain U   +3 more
europepmc   +1 more source

One-side Liouville theorems for a class of hypoelliptic ultraparabolic equations [PDF]

open access: yes, 2005
A one-side Liouville Theorem is proved for second order hypoelliptic operators homogenous with respect to a group of ...
LANCONELLI, ERMANNO   +4 more
core   +1 more source

On the hypoellipticity of convolution equations in the ultradistribution spaces of 𝐿^{𝑞} growth [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We consider convolution equations in the ultradistribution spaces D
openaire   +1 more source

Harnack Inequality for Hypoelliptic Second Order Partial Differential Operators [PDF]

open access: yes, 2016
We consider non-negative solutions (Formula presented.) of second order hypoelliptic equations(Formula presented.) where Ω is a bounded open subset of (Formula presented.) and x denotes the point of Ω.
Kogoj, Alessia E   +2 more
core   +1 more source

A Cortical-Inspired Sub-Riemannian Model for Poggendorff-Type Visual Illusions. [PDF]

open access: yesJ Imaging, 2021
Baspinar E   +3 more
europepmc   +1 more source

Approximation of SDEs: a stochastic sewing approach. [PDF]

open access: yesProbab Theory Relat Fields, 2021
Butkovsky O, Dareiotis K, Gerencsér M.
europepmc   +1 more source

Semi-local behaviour of non-local hypoelliptic equations: divergence form [PDF]

open access: yes
We derive the Strong Harnack inequality for a class of hypoelliptic integro-differential equations in divergence form. The proof is based on a priori estimates, and as such extends the first non-stochastic approach of the non-local parabolic Strong ...
Loher, Amélie
core   +1 more source

On a class of hypoelliptic evolution operators [PDF]

open access: yes, 1994
We show that Hypoelliptic Kolmogorov equations are invariant with respect to a suitable Lie group structure. We prove a Harnack inequality which is invariant with respet to the Lie group structure.
E. Lanconelli, POLIDORO, Sergio
core  

A variational principle for hypoelliptic equations with constant coefficients

open access: yes, 2020
A variational method for solving hypoelliptic equations with constant coefficients of the following type: \[ \sum_{| \alpha | \leq m}a_{\alpha} D^{\alpha} u(x)=g(x),\quad x\in \Omega \subset R^ n;\quad \frac{\partial^ ju}{\partial n^ j}=0,\quad j=0,1,...,K,\quad x\in \partial \Omega. \] (\(\Omega\) is a bounded domain) is presented.
openaire   +2 more sources

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