Kayaduman, KuddusiCakan, Celal2024-08-042024-08-0420111085-33751687-0409https://doi.org/10.1155/2011/950364https://hdl.handle.net/11616/95451We have characterized a new type of core for double sequences, P-C-core, and determined the necessary and sufficient conditions on a four-dimensional matrix A to yield P-C-core{Ax} subset of alpha(P-core{x}) for all l(2)(infinity).eninfo:eu-repo/semantics/openAccessSigma-CoreConvergenceArticle10.1155/2011/9503642-s2.0-80053489705Q4WOS:000295628700001Q1