Place: Seminarraum Schloß Hagenberg
14.10. | Peter Paule | Organisational items |
21.10. | Roberto Pirastu | On the algebraic-combinatorial structure of Umbral Calculus
(work with G. Nicoletti/Bologna) Abstract: In this and in the following talks we present a combinatorial point of view for a general umbral calculus only based on the structure of vector space and coalgebra. |
28.10. | Roberto Pirastu | Umbral Calculus (part II) |
4.11. | Roberto Pirastu | Umbral Calculus (part III) |
18.11. | Istvan Nemes | Multisecting degenerate recurrences |
2.12. | Axel Riese | On automated proofs of q-identities |
9.12. | canceled | |
16.12. | Ziming Li | A note on the computation of cyclotomic factors of a resultant. Abstract: In this talk we propose a method for obtaining cyclotomic factors of a resultant without computing the resultant explicitly. By the method we may get rid of intermediate expression as well. |
Istvan Nemes | Invertible elements in Hadamard Algebras Abstract: Continuing my previous talk on multisection of sequences I show how to decide in the Hadamard algebra of C- and P-recursive sequences that a sequence is invertible. As an application I propose a simpler mean for finding m-hypergeometric solutions of recurrence relations than was given by Petkovsek and Salvy. |
|
13.01. | Peter Paule | Survey/Introduction to q-identities |
20.01. | canceled | |
27.01. | Christian Mallinger | Holonomic functions in Koepf' s approach Abstract: I will continue the talk which started in November 1994. Wolfram Koepf gave an approach for Computing the Power Series expansion of certain classes of functions. In my talk I will (try to) close some gaps that Koepf left. I will specify some parts of his algorithm for holonomic functions. Moreover, I will state some question that arose when I was working with this subject. |