Lobachevskii Journal of Mathematics Editor-in-Chief: A.M. Elizarov Lobachevskii Journal of Mathematics is an is an international peer reviewed journal published in collaboration with the Russian Academy of Sciences and Kazan Federal University. The journal covers mathematical topics associated with the name of famous Russian mathematician Nikolai Lobachevsky (Lobachevskii). The journal publishes research articles on geometry and topology, algebra, complex analysis, functional analysis, probability theory and mathematical statistics, optimal control, and theory of algorithms, as well as mechanics and applied mathematics. The journal welcomes manuscripts from all countries in the English or Russian language. PEER REVIEW Lobachevskii Journal of Mathematics is a peer reviewed journal. We use a double blind peer review format. The average period from submission to first decision is 30 days. The average rejection rate for submitted manuscripts is 50%. The final decision on the acceptance of an article for publication is made by the Editor-in-Chief and the Editorial 12 issues/year Board. Electronic access Any invited reviewer who feels unqualified or unable to review the manuscript due to ▶ link.springer.com the conflict of interests should promptly notify the editors and decline the invitation. Reviewers should formulate their statements clearly in a sound and reasoned way so that Subscription information authors can use reviewer’s arguments to improve the manuscript. Personal criticism of the authors must be avoided. Reviewers should indicate in a review (i) any relevant published springer.com/librarians ▶ work that has not been cited by the authors, (ii) anything that has been reported in previous publications and not given appropriate reference or citation, (ii) any substantial similarity or overlap with any other manuscript (published or unpublished) of which they have personal knowledge. On the homepage of Lobachevskii Journal of Mathematics at springer.com you can ▶ Sign up for our Table of Contents Alerts ▶ Get to know the complete Editorial Board ▶ Find submission information.