Advances in Mathematical Analysis with Applications

A special issue of Mathematics (ISSN 2227-7390).

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 2715

Special Issue Editor


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Guest Editor
Dipartimento di Matematica, Informatica ed Economia, Universita'degli Studi della Basilicata, 85100 Potenza, Italy
Interests: Complex analysis in several variables; theory of partial differential equations

Special Issue Information

Dear Colleagues,

Cauchy–Riemann (C-R) analysis is the study of properties of solutions to the tangential C-R equations textf = 0 on the boundary of a domain Ω ⊂ Cn, which originates in the complex analysis of functions of several complex variables and sets at work methods in subelliptic theory (vis-à-vis Hörmander systems of vector fields locally associated with textf = 0) and differential geometry (due to the recast of textf = 0 as a CR structure).

Contributions are sought on the following themes:

    1) CR extension problem;

    2) CR embedding problem;

    3) Subelliptic harmonic maps;

    4) Fefferman's metric and space-time physics;

    5) Shear free null geodesic congruences on  Lorentzian manifolds;

    6) Spectral geometry for the sub-Laplacian on a CR manifold;

    7) CR immersions and the CR rigidity problem;

    8) Dirac equations on CR manifolds;

    9) Solvability of a Lewy operator and knot topology.

Dr. Elisabetta Barletta
Guest Editor

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Keywords

  • tangential cauchy–riemann equations
  • hörmander system
  • CR extension problem
  • CR embedding problem
  • subelliptic harmonic map
  • Fefferman metric
  • sub-Laplacian
  • CR immersion
  • Dirac equation
  • Lewy operator

Published Papers (2 papers)

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Research

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14 pages, 317 KiB  
Article
Ultrasonic Waves in Bubbly Liquids: An Analytic Approach
by Pilar Ruiz Gordoa and Andrew Pickering
Mathematics 2021, 9(11), 1309; https://doi.org/10.3390/math9111309 - 07 Jun 2021
Cited by 2 | Viewed by 1497
Abstract
We consider the problem of the propagation of high-intensity acoustic waves in a bubble layer consisting of spherical bubbles of identical size with a uniform distribution. The mathematical model is a coupled system of partial differential equations for the acoustic pressure and the [...] Read more.
We consider the problem of the propagation of high-intensity acoustic waves in a bubble layer consisting of spherical bubbles of identical size with a uniform distribution. The mathematical model is a coupled system of partial differential equations for the acoustic pressure and the instantaneous radius of the bubbles consisting of the wave equation coupled with the Rayleigh–Plesset equation. We perform an analytic analysis based on the study of Lie symmetries for this system of equations, concentrating our attention on the traveling wave case. We then consider mappings of the resulting reductions onto equations defining elliptic functions, and special cases thereof, for example, solvable in terms of hyperbolic functions. In this way, we construct exact solutions of the system of partial differential equations under consideration. We believe this to be the first analytic study of this particular mathematical model. Full article
(This article belongs to the Special Issue Advances in Mathematical Analysis with Applications)

Review

Jump to: Research

18 pages, 350 KiB  
Review
Multiple Derivative Inversions and Lagrange-Good Expansion Formulae
by Wenchang Chu
Mathematics 2022, 10(22), 4234; https://doi.org/10.3390/math10224234 - 12 Nov 2022
Viewed by 824
Abstract
By establishing new multiple inverse series relations (with their connection coefficients being given by higher derivatives of fixed multivariate analytic functions), we illustrate a general framework to provide new proofs for MacMahon’s master theorem and the multivariate expansion formula due to Good (1960). [...] Read more.
By establishing new multiple inverse series relations (with their connection coefficients being given by higher derivatives of fixed multivariate analytic functions), we illustrate a general framework to provide new proofs for MacMahon’s master theorem and the multivariate expansion formula due to Good (1960). Further multivariate extensions of the derivative identities due to Pfaff (1795) and Cauchy (1826) will be derived and the generalized multifold convolution identities due to Carlitz (1977) will be reviewed. Full article
(This article belongs to the Special Issue Advances in Mathematical Analysis with Applications)
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