"Nonlocal Boundary Value Problems for Linear Hyperbolic Systems" by Afrah Almutairi

Date of Award

5-2025

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Mathematics and Systems Engineering

First Advisor

Tariel Kiguradze

Second Advisor

Stanley Snelson

Third Advisor

Jian Du

Fourth Advisor

Pavithra Pathirathna

Abstract

Boundary value problems in a characteristic rectangle Ω = [0, ω1]×[0, ω2] for second order linear hyperbolic systems are considered.

For initial–boundary value problems there are established:

(i) Necessary and sufficient conditions of well–posedness;

(ii) Necessary conditions of solvability;

(iii) Effective sufficient conditions of solvability of two–point initial–boundary value problems;

(iv) Effective sufficient conditions of solvability of initial–periodic problems;

(v) Necessary and sufficient conditions of solvability of ill–posed initial–boundary value problems;

(vi) Necessary and sufficient conditions of solvability of ill–posed initial–periodic problems.

For nonlocal boundary value problems there are established:

(i) Necessary and sufficient conditions of well–posedness;

(ii) Necessary conditions of solvability;

(iii) Effective sufficient conditions of solvability of problems with Nicoletti type boundary conditions;

(iv) Effective sufficient conditions of solvability of problems with boundary conditions of periodic type ;

(iv) Effective sufficient conditions of solvability of doubly–periodic problems;

(v) Necessary and sufficient conditions of solvability of ill–posed doubly–periodic problems.

Available for download on Monday, May 10, 2027

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