Search Results - "MEZIANI, ABDELHAMID"
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Cauchy Integral Operator in Complex Structures with Degeneracies
Published in The Journal of geometric analysis (2023)“…The solvability of the equation L u = f is considered for a hypocomplex vector field L in R 2 . When L satisfies a Łojasiewiczproperty,the solutions can be…”
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2
Normalization and solvability of vector fields near trapped orbits
Published in Transactions of the American Mathematical Society (01-05-2017)“…We study the solvability and normalization, in the real analytic and smooth categories, of a class of vector fields in a neighborhood of an invariant torus…”
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3
Elliptic planar vector fields with degeneracies
Published in Transactions of the American Mathematical Society (01-10-2005)“…This paper deals with the normalization of elliptic vector fields in the plane that degenerate along a simple and closed curve. The associated homogeneous…”
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4
Solvability of planar complex vector fields with homogeneous singularities
Published in Complex variables and elliptic equations (03-10-2017)“…In this paper, we study the equation , where L is a -valued vector field in with a homogeneous singularity. The properties of the solutions are linked to the…”
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5
Global solvability of real analytic complex vector fields in two variables
Published in Journal of Differential Equations (15-11-2011)“…This paper deals with the global solvability of a complex vector field with real analytic coefficients in two real variables. The vector field is assumed to…”
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6
Infinitesimal bendings for classes of two-dimensional surfaces
Published in Complex variables and elliptic equations (02-01-2024)“…Infinitesimal bendings for classes of two-dimensional surfaces in $ \mathbb {R}^3 $ R 3 are investigated. The techniques used to construct the bending fields…”
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7
On the Hypoellipticity of Differential Forms with Isolated Singularities
Published in The Journal of geometric analysis (01-07-2013)“…Hypoellipticity for a class of germs of ℂ-valued, real-analytic 1-forms with an isolated singularity is studied. The main result states that in dimension ≥3…”
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8
A generalized CR equation with isolated singularities
Published in Complex variables and elliptic equations (02-11-2023)“…The generalized CR equation is studied when the coefficients a and b have a finite number of singular points inside the domain. Solutions are constructed via…”
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9
Representation of solutions of a singular Cauchy-Riemann equation in the plane
Published in Complex variables and elliptic equations (01-12-2008)“…This article deals with the Bers-Vekua type equations with a singular point. Series representations of solutions and Green functions are constructed. A…”
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10
The Mizohata complex
Published in Transactions of the American Mathematical Society (01-03-1997)“…This paper deals with the local solvability of systems of first order linear partial differential equations defined by a germ \omega at 0\in \mathbb{R}^{n+1}…”
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11
Infinitesimal bendings of high orders for homogeneous surfaces with positive curvature and a flat point
Published in Journal of Differential Equations (01-08-2007)“…For any given n ∈ Z + and k ∈ Z + , infinitesimal bendings of order n and of class C k are constructed for a class of surfaces in R 3 . These surfaces are…”
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On the realizability of Lewy structures
Published in Proceedings of the American Mathematical Society (01-09-1996)“…We prove that a nondegenerate CR structure with signature (p,n-p) at 0\in \mathbb{R}^{2n+1} and with n first integrals z_{1},\cdots ,z_{n} satisfying…”
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13
A Lojasiewicz Inequality in Hypocomplex Structures of $\mathbb{R}^2
Published 01-05-2022“…For a real analytic complex vector field $L$ in an open set of $\mathbb{R}^2$, with local first integrals that are open maps, we attach a number $\mu \ge 1$…”
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14
Properties of solutions of a planar second-order elliptic equation with a singularity
Published in Complex variables and elliptic equations (01-07-2009)“…Local properties of solutions of a second-order elliptic partial differential equation in two variables with a point singularity are studied. Existence of…”
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15
Special issue on complex partial differential equations and higher dimensional versions
Published in Complex variables and elliptic equations (03-10-2017)Get full text
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16
On the two-dimensional stationary Schrödinger equation with a singular potential
Published in Journal of mathematical analysis and applications (01-05-2011)“…We study the equation−△u(x,y)+ν(x,y)u(x,y)=0 when the potential ν has the following expressionν(r,θ)=A(θ)r2 where (r,θ) are the polar coordinates in R2 and A…”
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17
On Planar Elliptic Structures with Infinite Type Degeneracy
Published in Journal of functional analysis (01-02-2001)Get full text
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18
HYPOELLIPTICITY OF NONSINGULAR CLOSED 1-FORMS ON COMPACT MANIFOLDS
Published in Communications in partial differential equations (07-01-2002)“…Hypoellipticity of nonsingular closed 1-forms on compact manifolds is characterized by a diophantine condition on the generators of the group of periods of the…”
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19
Class of hypocomplex structures on the two dimensional torus
Published 11-02-2019“…We study the H\"{o}lder solvability of a class of complex vector fields on the torus $\mathbb{T}^2$. We make use of the Theta function to associate a…”
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20
Infinitesimal Bendings for Classes of Two Dimensional Surfaces
Published 22-11-2021“…Infinitesimal bendings for classes of two-dimensional surfaces in $\mathbb{R}^3$ are investigated. The techniques used to construct the bending fields include…”
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