Generalized weakly demicompact and $S$-demicompact linear relations and their spectral properties

• Date: 2023
• Main Authors: Fakhfakh, Majed, Jeribi, Aref
• Format: Article
• Language: English
• Published: Institute of Mathematics, NAS of Ukraine 2023
• Online Access: https://umj.imath.kiev.ua/index.php/umj/article/view/7194
• Journal Title: Ukrains’kyi Matematychnyi Zhurnal

UDC 517.9 We extend the concept of generalized weakly demicompact and  relatively weakly demicompact operators on linear relations and present some outstanding results. Moreover, we address the theory of Fredholm and upper semi-Fredholm relations attempting to establish a connection wit...