Other Mathematical Activities

I have been a reviewer for Mathematical Reviews of MathSciNet since 2013 and a frequent referee for some journals. I also often organize or participate in summer schools, conferences, and seminars in number theory. I sometimes give lecture or lead students to mathematical competitions such as the TMO and IMO. Below are the record of some of my activities.

A reviewer for Mathematical Reviews of the American Mathematical Society (Reviewer number 098739), 2013--present.
Jury and Commentator in the 16th International Students’ Science Fair at KVIS Science Academy, January 16–-17, 2020.
A lecturer in the training of International Mathematical Olympiad for Thai Students at IPST, 2017--2019.
An Assistant of Thailand Team Leader in the International Mathematical Olympiad, England, July 9--July 22, 2019.
An organizer of Thailand Mathematical Olympiad TMO 2019, Silpakorn University, May 2019.
A lecturer in Summer School in Number Theory, Silpakorn University, June 2017, August 2018.
A coordinator for International Mathematical Olympiad IMO 2015, Chiang Mai University, Thailand, July 2015.
A coordinator for Thailand Mathematical Olympiad TMO 2014, Khon Kan University, May 2014.
Team Leader for Silpakorn University in Thailand Mathematical Olympiad TMO 2013, Burapha University, May 2013.

Referee duties

I am a referee of some articles for the following journals and proceedings. If it is an international journal, then it will also appear in my Publons profile.

Acta Arithmetica,
Acta et Commentationes Universitatis Tartuensis de Mathematica,
American Mathematical Monthly,
Asian-European Journal of Mathematics,
Bulletin of the Australian Mathematical Society,
Czechoslovak Mathematical Journal,
European Journal of Mathematics,
Fibonacci Quarterly,
Hardy and Ramanujan Journal,
Integers,
Indian Journal of Pure and Applied Mathematics,
International Journal of Number Theory,
Journal of Number Theory,
Journal of Integer Sequences,
Mathematica Slovaca,
Mathematica Pannonica,
Notes on Number Theory and Discrete Mathematics,
Periodica Mathematica Hungarica,
RACSAM(Mathematical Journal of Madrid Academy of Sciences) Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matematicas,
Revista Integración temas de matemáticas,

I am also a referee for some articles in the following journals and proceedings in Thailand, but some of them may not appear in my Publon profile.

ScienceAsia
Songklanakarin Journal of Science and Technology,
Burapha Science Journal,
Thaksin University Journal,
The Journal of Applied Science
Proceedings of the Conference in Number Theory and Analysis CNA 2019, Rajamangala University of Technology Thanyaburi, Thailand, November 28--29, 2019
Proceedings of the Annual Meeting in Mathematics AMM 2019, Burapha University, Thailand, 2019
Proceedings of the International Conference in Number Theory and Applications ICNA 2018, Walailak University, Thailand, 2018
Proceedings of the Annual Meeting in Mathematics AMM 2017, Chiangmai University, Thailand, 2017
Proceedings of the International Conference in Number Theory and Applications ICNA 2017, Kasetsart University, Thailand, 2017
Proceedings of the 17th International Conference on Fibonacci Numbers and Their Applications, Universit\'e de Caen-Normandie, France, 2016
Proceedings of the Annual Meeting in Mathematics AMM 2016, Chulalongkorn University, Thailand. 2016

Presentation, Visiting Position, Conference, Summer or Winter School

I had several opportunities to attend or give talks at various seminars and conferences. This helps refresh my memory and reminds me of the good old days when I was attending seminars and conferences at Penn State, UIUC, and many other institutions. I thank all those who organized the good conferences. I list them in chronological order as shown below.

Seminar talk on second moments associated with the divisor function in arithmetic progressions, Number Theory Seminar at UIUC, USA, December 2011
Attend the International Conference in Number Theory and Applications ICNA 2012, Kasetsart University, Thailand, October 24--26, 2012
Attend the Conference in Number Theory and Applications CNA 2013, Prince of Songkla University, Thailand, October 24--25, 2013
Conference talk on exact divisibility by powers of the Fibonacci and Lucas numbers, Midwest Number Theory Conference, Bateman--Halberstam Memorial Conference, UIUC, USA, June 3--7, 2014
Visiting Research Scholar, Pennsylvania State University, USA, September 15 -- October 20, 2014
Conference talk on local behaviors of the number of relatively prime sets, Elementary, Analytic, and Algorithmic Number Theory: Research Inspired by the Mathematics of Carl Pomerance, University of Georgia, USA, June 8--11, 2015
Visit Queen's University, Canada, July 25 -- August 25, 2015
Visiting Research Scholar, Pennsylvania State University, USA, August 26--October 3, 2015
Attend the Conference in Number Theory and Applications CNA 2015, Kasetsart University, Thailand, December 17--18, 2015
Attend the 14th Meeting of the Canadian Number Theory Association and Special Session in Honor of Richard Guy's 100th birthday, University of Calgary, Canada, June 20--24, 2016
Visiting Research Scholar, Pennsylvania State University, USA, October 5--26, 2016
Attend KICM 2016 and ICNA 2016, King Mongkut's Institute of Technology Ladkrabang, Thailand, December 22--25, 2016
Seminar talk on the number of relatively prime subsets of $\{1,2, \ldots, n\}$, MUIC Seminar, Thailand, February 1, 2017
Seminar talk on new sums involving the floor function introduced by Tverberg, MUIC Seminar, Thailand, May 3, 2017
Chair of Number Theory Session, the Annual Meeting in Mathematics AMM 2017, Chiang Mai University, Thailand, June 2--4, 2017
An organizer and a lecturer in Summer School in Number Theory, Silpakorn University, Thailand, June 2017
Attend the International Conference in Number Theory and Applications ICNA 2017, Kasetsart University, Thailand, July 17--19, 2017
Poster presentation on extreme values of sums introduced by Jacobsthal and Tverberg, the 20th International Workshop for Young Mathematicians, Jagiellonian University, Cracow, Poland, September 17--23, 2017
Attend West Coast Number Theory Conference WCNT 2017, Pacific Grove, USA, December 16--20, 2017
Poster presentation on Jacobsthal and Jacobsthal-Lucas numbers and sums introduced by Jacobsthal and Tverberg, TRF-OHEC Annual Congress 2018, Thailand, January 8--10, 2018
Invited speaker in the Annual Meeting in Mathematics AMM 2018, King Mongkut's University of Technology Thonburi, Thailand, May 3--5, 2018
Chair of Number Theory Session, the Annual Meeting in Mathematics AMM 2018, King Mongkut's University of Technology Thonburi, Thailand, May 3--5, 2018
Attend Combinatory Analysis 2018: A Conference in Honor of George Andrews' 80th Birthday, Pennsylvania State University, USA, June 24--28, 2018
Conference talk on Fibonacci and Lucas numbers which have exactly three prime factors and some unique properties of $F_{18}$ and $L_{18}$, the 18th International Conference on Fibonacci Numbers and Their Applications, Dalhousie University, Halifax, Nova Scotia, Canada, July 1--7, 2018
Attend the 15th Meeting of the Canadian Number Theory Association CNTA XV, Laval University, Quebec City, Quebec, Canada, July 9--13, 2018
An organizer and a lecturer in Summer School in Number Theory, Silpakorn University, Thailand, August 2018
Seminar talk on some open and elementary problems in number theory, MUIC Seminar, Thailand, September 19, 2018
Visiting Research Scholar, Pennsylvania State University, USA, October 1--November 28, 2018
Chair of a session in the International Conference on Number Theory and Applications ICNA 2018, Walailak University, Thailand, December 12--15, 2018
Conference talk on the divisor function on residue classes, TRF-OHEC Annual Congress 2019, Thailand, January 9--11, 2019
Attend Workshop and Winter School on Local Statistics of Point Sequences, University of Linz, Austria, February 25--March 1, 2019
Seminar talk on some open problems in number theory II, Mathematics Seminar, Chulalongkorn University, Thailand, April 10, 2019
Observer B and an assistant of the deputy leader of Team Thailand, in the International Mathematical Olympiad IMO2019, University of Bath, London, UK, July 9--22, 2019
Seminar talk on some open problems in number theory III, Mathematics Seminar, King Mongkut's University of Technology North Bangkok, Thailand, August 19, 2019
Invited Speaker in the Conference in Number Theory and Analysis CNA 2019, Rajamangala University of Technology Thanyaburi, Thailand, November 28--29, 2019
Chair of a session in the Conference in Number Theory and Analysis CNA 2019, Rajamangala University of Technology Thanyaburi, Thailand, November 28--29, 2019
Jury and Commentator in the 16th International Students’ Science Fair ISSF 2020 at KVIS Science Academy, January 16--17, 2020.
Invited Speaker in the International Webinar on Recent Developments in Number Theory RDNT2020, KIIT deemed to be University, India, August 17--20, 2020 (online)
Seminar talk on some problems in integer sequences, arithmetic functions, and arithmetic progressions II (a combination of old and new slides), Thammasat University, Thailand, November 23, 2020 (hybrid - mostly online)
Invited Speaker in the Annual Pure and Applied Mathematics Conference APAM 2021, Chulalongkorn University, Thailand, June 17--18, 2021 (hybrid - mostly online)

Seminar talks on arithmetic progressions of reduced residues, Nagoya University, Japan, August 10 - 31, 2022
Seminar talks on sumsets associated with Beatty sequences, Nagoya University, Japan, August 10 - 31, 2022
Attend the Autumn Meeting of the Mathematical Society of Japan, Hokkaido University, Japan, September 13-16, 2022 Link
Attend RIMS Workshop on Analytic Number Theory and Related Topics, Research Institute of Mathematical Science (RIMS), Kyoto University, Japan, October 11-14, 2022 Link

Attend (online) Combinatorial Number Theory and Connected Topics II, India, February 4-5, 2023 Link
Invited Speaker in the 16th Young Mathematicians Conference on Zeta Functions, Nagoya University, Japan, February 16-19, 2023 Link
Attend (online) the 17th Multiple Zeta Research Meeting & 61st Kansai Multiple Zeta Research Meeting, Kindai University, Higashi-Osaka Campus, February 20 - 22, 2023 Link
Attend RIMS Symposium on Zeta Functions and Their Representations, Research Institute of Mathematical Science (RIMS), Kyoto University, Japan, March 6-8, 2023 Link
Attend Professor Kohji Matsumoto's Final Lecture, on the occasion of his retirement at Nagoya University, Japan, on March 9, 2023
Contributed Talk (online) in the 27th Conferences for Algebra for Young Researchers, University of Tsukuba, Japan, March 27-31, 2023 Link
Give a seminar talk on Beatty sequences in additive number theory, Tohoku University, Japan, May 29, 2023
Give an informal seminar talk on a summary of my results and mathematical activities while I visit Nagoya University, June 14, 2023

Some conferences that I would like to attend.

Comparative Prime Number Theory Symposium, Vancouver, British Columbia, Canada, June 17-21, 2024 Link
Canadian Number Theory Association Meeting, Toronto, Ontario, Canada, June 24-28, 2024
Analytic Number Theory and Related Topics, RIMS, Kyoto University, Kyoto, Japan, October 15-18, 2024