1. A note on triangular operators on smooth sequence spaces
- Author
-
Murat Yurdakul and Elif Uyanik
- Subjects
Combinatorics ,Matrix (mathematics) ,Sequence ,Algebra and Number Theory ,Transpose ,Scalar (mathematics) ,Triangular matrix ,Lambda ,Space (mathematics) ,Analysis ,Cauchy product ,Mathematics - Abstract
For a scalar sequence {(\theta_n)}_{n \in \mathbb{N}}, let C be the matrix defined by c_n^k = \theta_{n-k+1} if n > k, c_n^k = 0 if n < k. The map between Kothe spaces \lambda(A) and \lambda(B) is called a Cauchy Product map if it is determined by the triangular matrix C. In this note we introduced some necessary and sufficient conditions for a Cauchy Product map on a nuclear Kothe space \lambda(A) to nuclear G_1-space \lambda(B) to be linear and continuous. Its transpose is also considered.
- Published
- 2019