# Research Overview

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PhD advisor: Prof. Kohji Matsumoto (松本耕二 教授)

Research interest: analytic number theory, analytic properties of zeta functions and L-functions, zeros of derivatives of zeta functions and L-functions

Address: Faculty of Mathematics, Kyushu University

744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

＠ 九州大学 大学院数理学研究院 教員紹介

＠ 理化学研究所 数理創造プログラム メンバー紹介

*** Below each item is written in reverse chronological order ***

Research papers:

1. D. A. Goldston and Ade Irma Suriajaya, A singular series average and the zeros of the Riemann zeta-function, submitted, preprint in arXiv:2007.16099 [math.NT].

2. D. A. Goldston and Ade Irma Suriajaya, The error term in the Cesàro mean of the prime pair singular series, submitted, preprint in arXiv:2007.14616 [math.NT].

3. Athanasios Sourmelidis, Jörn Steuding, and Ade Irma Suriajaya, Dirichlet Series with Periodic Coefficients and their Value-Distribution Near the Critical Line, submitted, preprint in arXiv:2007.14008 [math.NT].

4. Shōta Inoue, Sumaia Saad Eddin and Ade Irma Suriajaya, Stieltjes constants of $L$-functions in the extended Selberg class, submitted.

5. Jörn Steuding and Ade Irma Suriajaya, Mean-Values Associated with Generalized Schemmel's Function, submitted.

6. Leonid G. Fel, Takao Komatsu, Ade Irma Suriajaya, A sum of negative degrees of the gaps values in 2 and 3-generated numerical semigroups, to appear in Annales Mathematicae et Informaticae, available online at http://publikacio.uni-eszterhazy.hu/6528/1/AMI_online_1073.pdf.

7. Jörn Steuding and Ade Irma Suriajaya, Value-Distribution of the Riemann Zeta-Function along its Julia Lines, Comput. Methods Funct. Theory 20 (2020), no. 3-4, 389–401, available online at http://link.springer.com/article/10.1007/s40315-020-00316-x.

8. Fan Ge and Ade Irma Suriajaya, Note on the number of zeros of $\zeta^{(k)}(s)$, to appear in Ramanujan J, available online at https://doi.org/10.1007/s11139-019-00219-z.

9. Junghun Lee, Athanasios Sourmelidis, Jörn Steuding and Ade Irma Suriajaya, The Values of the Riemann Zeta-Function on Discrete Sets, Proceedings of Various Aspects of Multiple Zeta Functions — in honor of Professor Kohji Matsumoto’s 60th birthday, ASPM 84 (2020), 315–334, doi: 10.2969/aspm/08410315.

10. Hirotaka Akatsuka and Ade Irma Suriajaya, Zeros of the first derivative of Dirichlet L-functions, J. Number Theory 184 (2018), 300–329, available online at https://doi.org/10.1016/j.jnt.2017.08.023.

11. Ade Irma Suriajaya, Two estimates on the distribution of zeros of the first derivative of Dirichlet L-functions under the generalized Riemann hypothesis, J. Théor. Nombres Bordeaux 29 (2017), no. 2, 471–502, doi: 10.5802/jtnb.988.

12. Junghun Lee and Ade Irma Suriajaya, An ergodic value distribution of certain meromorphic functions, J. Math. Anal. Appl. 445 (2017), 125–138, available online at http://dx.doi.org/10.1016/j.jmaa.2016.07.064.

13. Junghun Lee, Tomokazu Onozuka, and Ade Irma Suriajaya, Some probabilistic value distributions of the Riemann zeta function and its derivatives, Proc. Japan Acad. Ser. A Math. Sci. 92 (2016), no. 7, 82–83, doi: 10.3792/pjaa.92.82.

14. Ade Irma Suriajaya, On the zeros of the k-th derivative of the Riemann zeta function under the Riemann hypothesis, Funct. Approx. Comment. Math. 53 (2015), no.1, 69–95, doi: 10.7169/facm/2015.53.1.5.

Other papers:

1. A. I. Suriajaya, リーマンゼータ関数の導関数の零点の個数評価における誤差項の改良 (Improved error estimate for the number of zeros of the derivatives of the Riemann zeta function), RIMS Kyokyuroku 2162, no. 2162, 42–53 (for RIMS Workshop 2019 "Analytic Number Theory and Related Topics") (non-refereed proceedings, in Japanese)

2. A. I. Suriajaya, リーマンゼータ関数の臨界領域内等差数列における値の分布 (Values of the Riemann zeta function on vertical arithmetic progressions in the critical strip), RIMS Kyokyuroku 2019.10, no. 2131-19 (for RIMS Workshop 2018 "Analytic Number Theory and Related Topics") (non-refereed proceedings, in Japanese)

3. A. I. Suriajaya, リーマンゼータ関数とディリクレL関数の導関数の零点の分布, RIMS Kyokyuroku 2018.11, no. 2092, 9–14 (for RIMS Workshop 2017 "Analytic Number Theory and Related Areas") (non-refereed proceedings, in Japanese)

4. A. I. Suriajaya, On the zeros of the derivatives of the Riemann zeta function under the Riemann hypothesis, RIMS Kyokyuroku 2016.12, no. 2013, 33–43 (for RIMS Workshop 2014 "Analytic Number Theory － Distribution and Approximation of Arithmetic Objects") (non-refereed proceedings)

5. A. I. Suriajaya, 综述黎曼ζ函数的零点分布, NU Ideas 5 (2016), issue 1 (in Chinese)

6. A. I. Suriajaya, On the Zeros of the Second Derivative of the Riemann Zeta Function under the Riemann Hypothesis, arxiv:1309.7160 [math.NT]. (only preprint)

Talks

Research visits:

1. UIUC (Champaign, IL, USA) // May 25–29, 2020

2. SJSU and AIM (San Jose, CA, USA) // Apr 1 – May 24, 2020

3. China University of Mining and Technology, Beijing (Beijing, P. R. China) // Sep 14 – 25, 2019

4. University of Würzburg (Würzburg, Germany) // Jun 29 – Jul 1, 2015; Aug 1 – Sep 4, 2016; Jul 9–15, 2017; Sep 9 – Oct 7, 2017; Apr 22–28, 2018; May 20 – Jun 20, 2018; Apr 4–9, 2019; Aug 6–30, 2019

5. IMSc (Chennai, India) // Feb 10–16, 2019

6. UNSW Sydney and Canberra (Sydney and Canberra, Australia) // Sep 20 – 30, 2018

7. University of Rochester (Rochester, NY, USA) // Oct 21 – Dec 1, 2016; Feb 19 – Mar 19, 2017; May 6–17, 2017; Jul 3–7, 2018

8. Shandong University Weihai Campus (Weihai, Shandong, P. R. China) // May 7 – 12, 2018

9. MSRI (Berkeley, CA, USA) // Jan 23 – Feb 10, 2017; May 1–5, 2017; Jan 7–24, 2018

10. Nagoya University (Nagoya, Japan) // Aug 14–25, 2017

11. San Jose State University (San Jose, CA, USA) // Apr 26–30, 2017

12. Academia Sinica (Taipei, Taiwan) // Jun 11–30, 2016

External research funding:

1. JSPS Grants-in-Aid for Scientific Research (Kakenhi) for young researchers, project number: 18K13400

Organized seminar and conferences:

1. Kyushu University Algebra Seminar, July 2019 – present

2. Conference on distribution of values of zeta functions and L-functions, March 21–27, 2019

3. RIKEN iTHES/iTHEMS Number Theory Seminar:

1. March 16, 2019 (Speakers: Prof. Yasuo Ohno [Tohoku University] and Dr. Yuta Suzuki [Nagoya University])

2. February 25, 2019 (Speakers: Prof. Takashi Nakamura [Tokyo University of Science] and Prof. Hidehiko Mishou [Tokyo Denki University])

3. December 6, 2018 (Speaker: Masahiro Mine [Tokyo Institute of Technology])

4. November 22, 2018 (Speakers: Toshiki Matsusaka [Kyushu University] and Dr. Shin-ichiro Seki [Tohoku University])

5. October 23, 2018 (Speakers: Wataru Takeda [Nagoya University] and Kota Saito [Nagoya University])

6. July 24, 2018 (Speakers: Dr. Masataka Ono [Keio University], Dr. Shingo Sugiyama [Nihon University], and Yoshinosuke Hirakawa [Keio University])

7. March 13, 2018 (Speaker: Dr. Soma Purkait [Tokyo University of Science])

8. February 23 and 24, 2018 (Speaker: Prof. Dr. Takao Komatsu [Wuhan University])

9. December 15 and 18, 2017 (Speaker: Prof. Dr. Yoonbok Lee [Incheon National University])

10. November 15 and 17, 2017 (Speaker: Dr. Sumaia Saad Eddin [Nagoya University])

11. August 31, 2017 (Speaker: Thomas Lachmann [TU Graz])

4. RIKEN coffee meeting:

1. February 23, 2018 (Speaker: Dr. Tetsuo Hatsuda)

2. February 16, 2018 (Speaker: Dr. Eren Mehmet Kiral)

3. November 17, 2017 (Speaker: Dr. Sumaia Saad Eddin [Nagoya University])

5. 第８回ゼータ若手研究集会 (The 8th Young Mathematicians Conference on Zeta Functions), February 13–16, 2015

6. Chacha-zemi, November 17, 2011 – January 29, 2015