TY - BOOK AU - Alina Sahar (21114) TI - Cylindrical and spherical ion-acoustic freak waves in adiabatically hot electron-positron-ion plasmas U1 - 510 PY - 2022/// CY - Islamabad PB - (Unpublished) KW - Mathematics KW - Non-Linear waves KW - Perturbative method KW - Freak Waves KW - Linear waves KW - DBS KW - FEAS N1 - Submitted in partial fulfillment of the requirements for the degree of Master of Philosophy in Mathematics to the Department of Basic Sciences; Includes bibliographical references; Thesis supervisor: Dr. Muhammad Yaqub Khan; Thesis (M.Phil)--Riphah International University, 2022 ER -