Abstract
We study a subclass of Sheffer sequences denominated Appell sequences. Using methods of the so-called umbral calculus in conjunction with general results of nuclear Fréchet spaces and the theory of Köthe sequence spaces, we give necessary and sufficient conditions for an Appell sequence to be a basis.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
