
BAREKENG : Journal of Mathematics and Its Applications, Volume 19 Issue 2 (June 2025) has been available online since April 2025. All officially published articles are written in English. This volume is published four times a year in March, June, September, and December. All articles in this issue (60 research articles) include 211 authors from Indonesia, the United Kingdom, South Africa, Nigeria, Singapore, Malaysia, India, Ghana, and the Philippines.