Savasci, M. YesilkayagilBasar, F.2024-08-042024-08-0420240231-69860862-9544https://hdl.handle.net/11616/104447Suppose that theta is an element of {bp, r}. In this study, we introduce the generalised double Hahn sequence space H-theta(d) as an extension of generalised Hahn sequence space hd defined by Goes [J. Math. Anal. Appl. 39 (1972), 477-494]. We give some topological properties of this space. Then, we characterize the classes (H-theta(d) : W) of four dimensional infinite matrices, where W is an element of {C-theta, M-u, L-u, H-theta(d). Finally, we determine the alpha-dual of the space H-theta(d) and beta(bp)- and gamma-duals of the space H-r(d).eninfo:eu-repo/semantics/closedAccessSequence spacematrix domainalpha- beta- and gamma-duals and matrix map-pingsArticle932101114WOS:001241626100003N/A