Savaş, EkremPatterson, Richard F.2020-11-212020-11-2120110139-9918https://doi.org/10.2478/s12175-011-0009-2https://hdl.handle.net/11467/3547This paper begins with new definitions for double sequence spaces. These new definitions are constructed, in general, by combining modulus function and nonnegative four-dimensional matrix. We use these definitions to establish inclusion theorems between various sequence spaces such as: If A = (am,n,k,l) be a nonnegative four-dimensional matrix such that and let f be a modulus, then ??(A, f) ? ???(A, f) and ??0(A, f) ? ???(A, f). © 2011 Versita Warsaw and Springer-Verlag Wien.eninfo:eu-repo/semantics/openAccessdouble sequencesmodulus functionsP-convergentArticle612245256Q4WOS:000289304600009Q22-s2.0-7995379728410.2478/s12175-011-0009-2