Results 11 to 20 of about 17,148,641 (166)

Well-posedness of the one-dimensional derivative nonlinear Schrödinger equation [PDF]

open access: yes, 2018
This thesis is concerned with the well-posedness of the one-dimensional derivative non-linear Schrodinger equation (DNLS). In particular, we study the initial-value problem associated to DNLS with low-regularity initial data in two settings: (i) on the
Moşincat, Răzvan Octavian
core   +3 more sources

Mathematical Modeling and Analysis of TB and COVID-19 Coinfection

open access: yesJournal of Applied Mathematics, 2022
Tuberculosis (TB) and coronavirus (COVID-19) are both infectious diseases that globally continue affecting millions of people every year. They have similar symptoms such as cough, fever, and difficulty breathing but differ in incubation periods.
Kassahun Getnet Mekonen   +3 more
doaj   +1 more source

WELL-POSEDNESS OF THE CAUCHY PROBLEM FOR p-EVOLUTION SYSTEMS OF PSEUDO-DIFFERENTIAL OPERATORS [PDF]

open access: yes, 2013
We study p-evolution pseudo-differential systems of the first order with coefficients in (t,x) and real characteristics. We find sufficient conditions for the well-posedness of the Cauchy problem in H∞.
Ascanelli, Alessia, Boiti, Chiara
core   +1 more source

Mathematical modeling and analysis for the co-infection of COVID-19 and tuberculosis

open access: yesHeliyon, 2022
We developed a TB-COVID-19 co-infection epidemic model using a non-linear dynamical system by subdividing the human population into seven compartments. The biological well-posedness of the formulated mathematical model was studied via proving properties ...
Kassahun Getnet Mekonen   +1 more
doaj   +1 more source

Lagrangian flows for vector fields with gradient given by a singular integral [PDF]

open access: yes, 2013
We prove quantitative estimates on ows of ordinary di erential equations with vector field with gradient given by a singular integral of an L1 function.
Crippa, Gianluca, Bouchut, Francois
core   +1 more source

On the well-posedness of weakly hyperbolic equations with time-dependent coefficients [PDF]

open access: yes, 2012
30.10.12 KB.
Garetto, Claudia   +7 more
core   +1 more source

Well-posedness and stability for abstract spline problems [PDF]

open access: yes, 2007
In this work well-posedness and stability properties of the abstract spline problem are studied in the framework of reflexive spaces. Tykhonov well-posedness is proved without restrictive assumptions. In the context of Hilbert spaces, also the stronger
MOLHO, ELENA   +4 more
core   +1 more source

Well-posedness of a model for water waves with viscosity [PDF]

open access: yes, 2012
The water wave equations of ideal free–surface fluid mechanics are a fundamental model of open ocean movements with a surprisingly subtle well–posedness theory.
David Ambrose (7936688)   +2 more
core   +6 more sources

Local and global well-posedness for nonlinear Dirac type equations [PDF]

open access: yes, 2012
We investigate the local and global well-posedness of a variety of nonlinear Dirac type equations with null structure on R1+1. In particular, we prove global existence in L2 for a nonlinear Dirac equation known as the Thirring model. Local existence in
Candy, Timothy Lars
core   +3 more sources

Study of an SIQR model with optimal control techniques: A mathematical approach

open access: yesResults in Control and Optimization, 2023
In this article, a SIQR deterministic model with a non-linear incidence function for an infectious disease is formulated and analyzed. The well-posedness of the model is ensured with the help of the non-negativity and boundedness of the solution of the ...
Sudha Yadav   +2 more
doaj   +1 more source

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