A Note on the Uniqueness and Existence of the Solution to the Problem of Boundary Values for Some Partial Differential Equations of Second Order

aspg-33-1552-1792223576 20261017075256 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Galoitica: Journal of Mathematical Structures and Applications GJMSA 2834-5568 2023 3 2 A Note on the Uniqueness and Existence of the Solution to the Problem of Boundary Values for Some Partial Differential Equations of Second Order Josef Al Jumayel Faculty Of Science, Beirut Arab University, Beirut, Lebanon Most physical mathematical problems, when solved, turn into one or more partial differential equations with imposed initial conditions or boundary conditions . This is known as the boundary value problems of differential equations .This research studies the solution of the set of Partial Differential Equations of parabolic and hyperbolic-hyperbolic type with boundary conditions imposed in different regions of the plane x o y . This research has been proving the theorem of uniqueness and the existence of the solution. 2023 08 16 1552 https://creativecommons.org/licenses/by/4.0/ 10.54216/GJMSA.030201 https://americaspg.com/journal/33/article/1552 https://americaspg.com/storage/11676479177.pdf