http://hdl.handle.net/20.500.12323/1644 2026-04-05T18:21:03Z http://hdl.handle.net/20.500.12323/8242 Title: Nizami’s Philosophy of History Authors: Isakhanli, Hamlet Abstract: In the works of great poets and writers, the idea of the historical past and the assessment of the past play an important role. A poet and a writer must have a certain philosophy of history in order to revive the past in an artistic way. The works of poets such as Nizami and Dante are rich in philosophical ideas, political views and philosophy of history. The heroes of Nizami’s poem-novels Khosrov and Shirin and Seven Beauties are historical figures of Iran and the world around it. The literary and political theme of these works is love and an idea of a just ruler. Nizami’s last and largest work, Iskandar-Nama (The Book of Alexander), explores the ideas of world history, world geography and a just ruler. Nizami develops a historical-geographical concept in accordance with this goal. Iskandar, the ruler of the world in Nizami’s interpretation, travels the known world, visiting the places that the historical Alexander the Great did not see. Iskandar engages in philosophical discussions with the seven Greek philosophers he has gathered around him; however, from a chronological point of view, only one of these philosophers is a contemporary and acquaintance of Iskandar. In most cases, Nizami deliberately allows historical anachronisms, implementing his creative ideas in this way. 2026-01-01T00:00:00Z http://hdl.handle.net/20.500.12323/7947 Title: The Resolvent of Impulsive Singular Hahn–Sturm–Liouville Operators Authors: Allahverdiev, Bilender P.; Tuna, Hüseyin; Isayev, Hamlet A. Abstract: In this study, the resolvent of the impulsive singular Hahn–Sturm– Liouville operator is considered. An integral representation for the resolvent of this operator is obtained. 2025-03-01T00:00:00Z http://hdl.handle.net/20.500.12323/7938 Title: Eigenfunction Expansions for Singular Impulsive Dynamic Dirac Systems Authors: Allahverdiev, Bilender P.; Tuna, Hüseyin; Isayev, Hamlet A. Abstract: In this article, a spectral function for the singular impulsive dynamic Dirac system is obtained. In terms of this function, the Parseval equality and expansion formula in eigenfunctions is given. 2025-02-18T00:00:00Z http://hdl.handle.net/20.500.12323/7885 Title: Nonlinear impulsive Hahn—Sturm—Liouville problems on the whole line Authors: Allahverdiev, B. P.; Tuna, H.; Isayev, H. A. Abstract: Impulsive Hahn—Sturm—Liouville problems in singular cases are discussed. The existence of solutions of such equations on the whole axis and in the case of Weyl’s limit-circle has been investigated. First, we construct the corresponding Green’s function. This boundary-value problem is thus reduced to a fixed point problem. Later, we demonstrate the existence and uniqueness of the solutions to this problem by using the traditional Banach fixed point theorem. Finally, we derive an existence theorem without considering the solution’s uniqueness. We apply the well-known Schauder fixed point to obtain this result. 2024-01-01T00:00:00Z