@misc{10498/26504, year = {2022}, month = {1}, url = {http://hdl.handle.net/10498/26504}, abstract = {A family of third-order partial differential equations (PDEs) is analyzed. This family broadens out well-known PDEs such as the Korteweg-de Vries equation, the Gardner equation, and the Burgers equation, which model many real-world phenomena. Furthermore, several macroscopic models for semiconductors considering quantum effects—for example, models for the transmission of electrical lines and quantum hydrodynamic models—are governed by third-order PDEs of this family. For this family, all point symmetries have been derived. These symmetries are used to determine group-invariant solutions from three-dimensional solvable subgroups of the complete symmetry group, which allow us to reduce the given PDE to a first-order nonlinear ordinary differential equation (ODE). Finally, exact solutions are obtained by solving the first-order nonlinear ODEs or by taking into account the Type-II hidden symmetries that appear in the reduced second-order ODEs.}, publisher = {MDPI}, keywords = {third-order partial differential equations}, keywords = {lie symmetries}, keywords = {solvable symmetry algebras}, keywords = {group invariant solutions}, title = {Applications of Solvable Lie Algebras to a Class of Third Order Equations}, doi = {10.3390/math10020254}, author = {Bruzón Gallego, María de los Santos and Rosa Silva, Rafael de la and Gandarias Núñez, María Luz and Tracinà, Rita}, }