Results 61 to 70 of about 154 (95)
On Gevrey regularity of globally C∞ hypoelliptic operators
We prove Gevrey regularity for a class of operators defined on the torus Tm+n, with real analytic coefficients in Tm, and which are globally C∞ hypoelliptic.
Himonas, A. Alexandrou +1 more
core +1 more source
Noncommutative topology and the world's simplest index theorem. [PDF]
van Erp E.
europepmc +1 more source
Gevrey Hypoellipticity for Non-subelliptic Operators
In J. J. Kohn’s recent paper [5] the operator ∂ ∂ − iz|z|2(m−1) ∂z ∂t was introduced and shown to be hypoelliptic, yet to lose k−1 derivatives in m L2 Sobolev norms.
BOVE, ANTONIO, D. S. Tartakoff
core
Hyperfunctions and linear partial differential equations. [PDF]
Harvey R.
europepmc +1 more source
A new class of pseudo-differential operators. [PDF]
Nagel A, Stein EM.
europepmc +1 more source
On the Singularities of Non-Analytic Szegö Kernels
The \,\, {\it CR} \,\, manifold \,\, $ M_m=\,\, \{(z_1,z_2) \, \in \, {\mathbb C}^2 ; \,\, \Im z_2 = [\Re z_1]^{2m} \} (m=2,3,\ldots)$ is a counterexample, which was given by Christ and Geller, to analytic hypoellipticity of $\bar{\partial}_{b}$ and real
Kamimoto Joe
core
On integral representations for the Neumann operator. [PDF]
Phong DH.
europepmc +1 more source
The Kotake-Narasimhan theorem in general ultradifferentiable classes. [PDF]
Fürdös S.
europepmc +1 more source
Remarks on Analytic Hypoellipticity and Local Solvability in the Space of Hyperfunctions
Let p(x,D) be a pseudodifferential operator on Rn with a ( formal) analytic symbol p(x, ξ), and let x0 ∈ Rn. In this paper we prove that the transposed operator tp(x,D) of p(x,D) is locally solvable at x0 modulo analytic functions in the space of ...
Wakabayashi Seiichiro
core
Deterministic, stochastic, and mean-field PDE models in neuroscience. [PDF]
Çetin C +5 more
europepmc +1 more source

