The site presents two mathematical series, both being source journals of Journal of Mathematical Sciences published by Springer Science+Business Media, LLC.
Problems in Mathematical Analysis (PMA) is originally published in Russian, and an English translation of each PMA issue is published as a separate issue of Journal of Mathematical Sciences. PMA is one of the oldest (since 1973) source journals of Journal of Mathematical Sciences (cf. J. Math. Sci. 1, No. 2 (1973)) .
International Mathematical Schools (IMS) founded in 2022 is the 12th source journal of Journal of Mathemaical Sceinces. The issues are collected and edited by guest editors, renowned specialists and leaders in various areas of mathematics.