利用Abel分部求和引理,本文给出Gasper和Rahman的一个非终止三次7F6-级数求和公式一个初等证明.同时,由Gosper在1977年提出的一个3F2(3/4)-级数恒等式也被推出.
Through the modified Abel lemma on summation by parts. An elementary proof is given for a nonterminating cubic 7F6-series summation formula of Gasper and Rahman. As a byproduct, an interesting nonterminating 3F2 (3/4)-series identity conjectured by Gosper (1977) is also rederived.