Mathematics – Combinatorics
Scientific paper
2006-07-15
Mathematics
Combinatorics
17 pages
Scientific paper
Chu has recently shown that the Abel lemma on summations by parts can serve as the underlying relation for Bailey's ${}_6\psi_6$ bilateral summation formula. In other words, the Abel lemma spells out the telescoping nature of the ${}_6\psi_6$ sum. We present a systematic approach to compute Abel pairs for bilateral and unilateral basic hypergeometric summation formulas by using the $q$-Gosper algorithm. It is demonstrated that Abel pairs can be derived from Gosper pairs. This approach applies to many classical summation formulas.
Chen Vincent Y. B.
Chen William Y. C.
Gu Nancy S. S.
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