Results 81 to 90 of about 553 (167)

Analytic Torsion of Generic Rank Two Distributions in Dimension Five. [PDF]

J Geom Anal, 2022
Haller S.
europepmc   +1 more source

Hopf bifurcation without parameters in deterministic and stochastic modeling of cancer virotherapy, part II. [PDF]

J Math Anal Appl, 2022
Phan TA, Tian JP.
europepmc   +1 more source

Generalized Sobolev–Morrey estimates for hypoelliptic operators on homogeneous groups [PDF]

Let G= (RN, ∘ , δλ) be a homogeneous group, Q is the homogeneous dimension of G, X, X1, … , Xm be left invariant real vector fields on G and satisfy Hörmander’s rank condition on RN.
Guliyev V.S.
core   +1 more source

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

, 2005
A one-side Liouville Theorem is proved for second order hypoelliptic operators homogenous with respect to a group of ...
LANCONELLI, ERMANNO, Ermanno Lanconelli, KOGOJ, ALESSIA ELISABETTA, Lanconelli E., Alessia Elisabetta Kogoj   +4 more
core   +1 more source

On the propagation of flatness for second order hypoelliptic operators [PDF]

For a class of hypoelliptic operators with real-analytic coefficients, we provide a criterion ensuring a partial analyticity result. As a consequence, even when the "elliptic" strong unique continuation (i.e.
Albano P.
core   +1 more source

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

J Math Neurosci, 2021
Boscain U, Prandi D, Sacchelli L, Turco G.   +3 more
europepmc   +1 more source

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

J Imaging, 2021
Baspinar E, Calatroni L, Franceschi V, Prandi D.   +3 more
europepmc   +1 more source

The tangent groupoid and hypoelliptic operators [PDF]

, 2017
In the 1980s, Alain Connes gave a conceptually appealing proof of the Atiyah-Singer index theorem by means of the so-called "tangent groupoid". Over time, the tangent groupoid was generalized to more complicated analytic settings. I will discuss the role
van Erp, Erik
core  

The Heat Asymptotics on Filtered Manifolds. [PDF]

J Geom Anal, 2020
Dave S, Haller S.
europepmc   +1 more source

Hypoellipticity of Some Degenerate Subelliptic Operators

Journal of Functional Analysis, 1998
The author studies the following problem: Let \(L_1\) and \(L_2\) be two second-order differential operators, respectively in \(\mathbb{R}^n_x\) and \(\mathbb{R}^m_y\), which satisfy some subelliptic estimate, and \(\lambda=\lambda(x)\) a nonnegative function with a zero of infinite order at the origin, but with all other zeros of finite order. Put \(L=
openaire   +1 more source