An operator on formal power series of the form S μS , where μ is an invertible power series, and σ is a series of the form?t+(t2)?is called a unipotent substitution with pre-function. Such operators, denoted by a p...An operator on formal power series of the form S μS , where μ is an invertible power series, and σ is a series of the form?t+(t2)?is called a unipotent substitution with pre-function. Such operators, denoted by a pair (μ ,σ )? , form a group. The objective of this contribution is to show that it is possible to define a generalized powers for such operators, as for instance fractional powers σ for every .展开更多
The present paper is concerned with Bailey lemma which has been proved to be useful in the studies of hypergeometric function and Ramannujan-Rogers identities, etc. We will show that the Bailey lemma in ordinary form ...The present paper is concerned with Bailey lemma which has been proved to be useful in the studies of hypergeometric function and Ramannujan-Rogers identities, etc. We will show that the Bailey lemma in ordinary form is in fact a Riordan chain of a particular Riordan group.展开更多
文摘An operator on formal power series of the form S μS , where μ is an invertible power series, and σ is a series of the form?t+(t2)?is called a unipotent substitution with pre-function. Such operators, denoted by a pair (μ ,σ )? , form a group. The objective of this contribution is to show that it is possible to define a generalized powers for such operators, as for instance fractional powers σ for every .
文摘The present paper is concerned with Bailey lemma which has been proved to be useful in the studies of hypergeometric function and Ramannujan-Rogers identities, etc. We will show that the Bailey lemma in ordinary form is in fact a Riordan chain of a particular Riordan group.