Science and Education Publishing Journal of Mathematical Sciences and Applications 2333-8792 3 2 2015 10 30 Symmetric Bi-multipliers on d-algebras 22 24 EN Tamer Firat ?ule Ayar ?zbal Department of Mathematics, Faculty of Science and Letter, Ya?ar University, Izmir, Turkey JMSA2015321 10.12691/jmsa-3-2-1 2015 5 27 2015 9 15 2015 10 28 In this study, we introduce the notion of symmetric bimultipliers in d-algebras and investigate some related properties. Among others kernels and sets of fixed points of a d-algebra are characterized by symmetric bi-multipliers.