Bulletin of the Iranian Mathematical Society

, Volume 44, Issue 6, pp 1653–1663 | Cite as

On Bi-J-Class Bilinear Mappings on Banach Spaces

  • Abolfazl Nezhadali Baghan
  • Mohammad JanfadaEmail author
Original Paper


We propose the notion of J-set for a bilinear mapping to define the concept of bi-J-class bilinear mapping. We prove that every bihypercyclic bilinear mapping is bi-J-class, although its reverse does not necessarily hold. It is indicated that some properties of bi-J-class bilinear mappings are similar to J-class operators, but some relevant counterexamples are presented to show that many familiar properties of J-class operators are not valid for this framework. Next, we deal with the Kato’s approximation of bilinear mappings and discuss their bi-J-class properties.


Bihypercyclic bilinear mapping Bi-J-class bilinear mapping Approximation in the sense of Kato 

Mathematics Subject Classification

47A16 46G25 47B37 


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Copyright information

© Iranian Mathematical Society 2018

Authors and Affiliations

  1. 1.Department of Pure MathematicsFerdowsi University of MashhadMashhadIran
  2. 2.Department of Pure MathematicsFerdowsi University of MashhadMashhadIran

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