On a family of Apostol-Type polynomials

Sean m 2 N, ; ; ; 2 C, a; c 2 R+, y sea Q[m1;] n (x; c; a; ; ; ) la nueva clase de polinomios tipo Apostol generalizados de orden , nivel m y variable x. En el presente trabajo estudiaremos algunas propiedades de esta familia de polinomios y la utilizaremos para demostrar fórmulas de conexión entre éstos polinomios y los polinomios de Apostol Euler y los polinomios de Bernoulli generalizados de nivel m.  Let m 2 N, ; ; ; 2 C, a; c 2 R+ and let Q[m1;] n (x; c; a; ; ; ) be the new class of generalized Apostol-type polynomials of order, m level and variable in x. In the present document we study some properties of these polynomials being used to proof formulas in connection with Apostol-Euler polynomials and generalized Bernoulli polynomilas of m level.

Combinatorial identities associated with new families of the numbers and polynomials and their approximation values

Recently, the numbers $Y_{n}(\lambda )$ and the polynomials $Y_{n}(x,\lambda)$ have been introduced by the second author [22]. The purpose of this paper is to construct higher-order of these numbers and polynomials with their generating functions. By using these generating functions with their functional equations and derivative equations, we derive various identities and relations including two recurrence relations, Vandermonde type convolution formula, combinatorial sums, the Bernstein basis functions, and also some well known families of special numbers and their interpolation functions such as the Apostol--Bernoulli numbers, the Apostol--Euler numbers, the Stirling numbers of the first kind, and the zeta type function. Finally, by using Stirling's approximation for factorials, we investigate some approximation values of the special case of the numbers $Y_{n}\left( \lambda \right)$.Comment: 17 page

Existence and reduction of generalized Apostol-Bernoulli, Apostol-Euler and Apostol-Genocchi polynomials

summary:One can find in the mathematical literature many recent papers studying the generalized Apostol-Bernoulli, Apostol-Euler and Apostol-Genocchi polynomials, defined by means of generating functions. In this article we clarify the range of parameters in which these definitions are valid and when they provide essentially different families of polynomials. In particular, we show that, up to multiplicative constants, it is enough to take as the “main family” those given by $$\Big ( \frac{2}{\lambda e^t+1} \Big )^\alpha e^{xt} = \sum _{n=0}^{\infty } \mathcal{E}^{(\alpha )}_{n}(x;\lambda ) \frac{t^n}{n!}\,, \qquad \lambda \in \mathbb{C}\setminus \lbrace -1\rbrace \,,$$ and as an “exceptional family” $$\Big ( \frac{t}{e^t-1} \Big )^\alpha e^{xt} = \sum _{n=0}^{\infty } \mathcal{B}^{(\alpha )}_{n}(x) \frac{t^n}{n!}\,,$$ both of these for $\alpha \in \mathbb{C}$