10 papers
Moduli of the Sourceless Framed Beltrami-Vekua Normal Form
Daniel Alayón-Solarz
We study the moduli of sourceless framed Beltrami-Vekua equations under recombinations of the unknown, scalings, and orientation-preserving changes of variables. On every bounded s…
The Pseudo-Analytic Charge
Daniel Alayón-Solarz
The framed Beltrami--Vekua equation , with and $…
The Framed Beltrami-Vekua Normal Form and its Pseudo-Analytic Mass
Daniel Alayón-Solarz
We normalize a first-order real planar elliptic system, by pointwise algebra, to a framed Beltrami-Vekua equation $Φ(w_{\bar z} - μw_z) + Ψ(\overline{w_z} - μ\,\overline{w_{\ba…
The complex form of Vekua's characteristic factor: a derivation, and two sign corrections in §7 of Generalized Analytic Functions
Daniel Alayón-Solarz
In \S7 of \emph{Generalized Analytic Functions} \cite{vekua}, the reduction of a first-order elliptic system to canonical form proceeds through a factor of the characteristic equat…
The Absorption Theorem for the Beltrami-Vekua Normal Form
Daniel Alayón-Solarz
The Beltrami-Vekua normal form assigns to every smooth first-order real planar elliptic system a complex equation by a…
The Pseudo-Analytic Mass of a Beltrami-Vekua Equation
Daniel Alayón-Solarz
Every smooth first-order real planar elliptic system admits a universal complex form , which we call the Belt…