Research Article | Open Access

Volume 2012 |Article ID 269847 | https://doi.org/10.1155/2012/269847

Dae San Kim, Dmitry V. Dolgy, Hyun-Mee Kim, Sang-Hun Lee, Taekyun Kim, "Integral Formulae of Bernoulli Polynomials", Discrete Dynamics in Nature and Society, vol. 2012, Article ID 269847, 15 pages, 2012. https://doi.org/10.1155/2012/269847

# Integral Formulae of Bernoulli Polynomials

Accepted10 May 2012
Published27 Jun 2012

#### Abstract

Recently, some interesting and new identities are introduced in (Hwang et al., Communicated). From these identities, we derive some new and interesting integral formulae for the Bernoulli polynomials.

#### 1. Introduction

As is well known, the Bernoulli polynomials are defined by generating functions as follows: (see ). In the special case, are called the th Bernoulli numbers. The Euler polynomials are also defined by with the usual convention about replacing by (see ). From (1.1) and (1.2), we can easily derive the following equation: By (1.1) and (1.3), we get

From (1.1), we have Thus, by (1.5), we get It is known that are called the th Euler numbers (see ). The Euler polynomials are also given by (see ). From (1.7), we can derive the following equation: By the definition of Bernoulli and Euler numbers, we get the following recurrence formulae: where is the kronecker symbol (see ). From (1.6), (1.8), and (1.9), we note that where . The following identity is known in : From the identities of Bernoulli polynomials, we derive some new and interesting integral formulae of an arithmetical nature on the Bernoulli polynomials.

#### 2. Integral Formulae of Bernoulli Polynomials

From (1.1) and (1.2), we note that

Therefore, by (1.2) and (2.1), we obtain the following theorem.

Theorem 2.1. For , one has

Let us take the definite integral from to on both sides of (1.4): for ,

By (2.3), we get

Therefore, by (2.4), we obtain the following theorem.

Theorem 2.2. For , with , one has

Let us take , , and in (1.11). Then we have It is easy to show that

Let us consider the integral from to in (2.6): By (2.6) and (2.8), we get Therefore, by (2.9), we obtain the following theorem.

Theorem 2.3. For , one has

Lemma 2.4. Let . For , one has (see ).

Let us take , , in Lemma 2.4. Then we have Taking integral from to in (2.12), we get

It is easy to show that

Thus, by (2.13) and (2.14), we get

Therefore, by (2.2) and (2.15), we obtain the following theorem.

Theorem 2.5. For , one has

#### 3. 𝑝-Adic Integral on ℤ𝑝 Associated with Bernoulli and Euler Numbers

Let be a fixed odd prime number. Throughout this section, , , and will denote the ring of -adic integers, the field of -adic rational numbers, and the completion of algebraic closure of , respectively. Let be the normalized exponential valuation of with . Let be the space of uniformly differentiable functions on . For , the bosonic -adic integral on is defined by (see ). Thus, by (3.1), we get where , and . Let us take . Then we have From (3.3), we have From (1.2), we can derive the following integral equation: Thus, from (3.4) and (3.5), we get From (3.6), we have The fermionic -adic integral on is defined by Kim as follows [6, 7]: Let . Then we have Continuing this process, we obtain the following equation: Thus, by (3.10), we have Let us take . By (3.9), we get From (3.2), we have the Witt's formula for the th Euler polynomials and numbers as follows: By (3.11) and (3.13), we get

Let us consider the following -adic integral on :

From (1.4) and (3.15), we have Therefore, by (3.15) and (3.16), we obtain the following theorem.

Theorem 3.1. For , one has

Now, we set

By (1.4), we get Therefore, by (3.18) and (3.19), we obtain the following theorem.

Theorem 3.2. For , one has

Let us consider the following integral on :

From (2.2), we have Therefore, by (3.21) and (3.22), we obtain the following theorem.

Theorem 3.3. For , one has

Now, we set

By (2.2), we get Therefore, by (3.24) and (3.25), we obtain the following corollary.

Corollary 3.4. For , we have

Let us assume that . From Lemma 2.4 and (3.13), we note that

By (3.27), we get

Thus, by (3.28) and (3.13), we obtain the following lemma (see ).

Lemma 3.5. Let . For , one has

Let us consider the formula in Lemma 3.5 with . Then we have Taking on both sides of (3.30), By the same method, we get Therefore, by (3.31) and (3.32), we obtain the following proposition.

Proposition 3.6. Let . Then one has

Replacing by , we have

From (3.4) and (3.7), we derive some identity for the first term of the LHS of (3.34).

The first term of the LHS of  (3.34) where The second term of the LHS of (3.34)

Therefore, by (3.34), (3.35), and (3.37), we obtain the following theorem.

Theorem 3.7. Let with . Then one has where

Remark 3.8. Here, we note that

#### Acknowledgment

The first author was supported by National Research Foundation of Korea Grant funded by the Korean Government 2011-0002486.

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