Editing Aleksandr Lyapunov (section)

=== Later years ===
Lyapunov returned to Saint Petersburg in 1902, after being elected acting member of the Academy of Science as well as ordinary professor in the Faculty of Applied Mathematics of the university. The position had been left vacant by the death of his former teacher, [[Pafnuty Chebyshev|Chebyshev]]. Not having any teaching obligations, this allowed Lyapunov to focus on his studies and in particular he was able to bring to a conclusion the work on the problem of Chebyshev with which he started his scientific career.

In 1908, he took part to the Fourth [[International Congress of Mathematicians|International Mathematical Congress]] in Rome. He also participated in the publication of Euler's selected works: he was an editor of the volumes 18 and 19.{{sfn|Smirnov|1992}}