On Simple Characterisations of Sheffer psi- polynomials and Related Propositions of the Calculus of Sequences
A. K. Kwasniewski
Abstract
A calculus of sequences started in 1936 opened the way for future extensions of umbral calculus in its finite operator form. Because of historically established notation we call it the psi-calculus.It appears in parts to be almost automatic extension of the standard classical finite operator calculus.
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