Dear All It is my pleasure to announce that Volume 20 of CGASA (Categories and General Algebraic Structures with Applications) published. This volume is dedicated to Professor Themba Dube on the occasion of his 65th Birthday. To read the papers you can visit the website: https://cgasa.sbu.ac.ir/. Best Wishes Mojgan ************************* Mojgan Mahmoudi; Professor Department of Mathematics, Shahid Beheshti University, Tehran 19839, IRAN. Telefax: (+98)(21)(22431652) E-mail: m-mahmoudi@sbu.ac.ir, mojganmahmoudi@yahoo.com http://faculties.sbu.ac.ir/m-mahmoudi/ You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. To take part in this conversation, reply all to this message. View group files<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.ashx?source=EscalatedMessage&action=files&GuestId=6bf90c14-94d1-45b7-a0b5-9dd447734d27> | Leave group<https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.ashx?source=EscalatedMessage&action=leave&GuestId=6bf90c14-94d1-45b7-a0b5-9dd447734d27> | Learn more about Microsoft 365 Groups<https://aka.ms/o365g>