**St Petersburg Mathematical Society**was founded in 1890 on the initiative of V G Imshenetskii who had earlier founded the Kharkov Mathematical Society in 1879. He served as its first President from its creation until his death in 1892. The next President was Yu-K Sokhotsky who had studied at the Physics and Mathematics Faculty at the University of St Petersburg, becoming a professor there in 1883. During the first year of his presidency, in 1893, the constitution of the Society was finalised. At this time the Society had 98 members. Vershik writes in [

It is unclear exactly how long the Society continued to function. In [[It looks strange that in St Petersburg, which was undoubtedly the main mathematical centre of Russia in the nineteenth and the beginning of the twentieth centuries, a mathematical society was created that late and played, apparently, a nonessential role, being less known than its counterpart in Moscow, for example. However, one should keep in mind that the Academy of Sciences, and most of its members, resided in the then capital]St Petersburg, and essentially performed the functions of a mathematical society, such as conducting scientific meetings, evaluation of papers, awarding prizes etc.

Steklov had arrived in St Petersburg in 1906 to take up the Chair of Mathematics at the University. Probably the Society had ceased to exist by the time of his arrival. In 1910 he was elected to the Academy of Sciences then, in 1919, he became vice-president of the Academy. At first he worked to maintain the position of the Academy, then later he put effort into enlarging the activity of the Academy and to reorganising it. He also worked to restart the Mathematical Society, as did A V Vassiliev. They succeed in 1921 when the Society began to function again under the name Petrograd Physical and Mathematical Society (St Petersburg had been renamed Petrograd by this time).

Details of the next phase of the Society's existence is given in the article:

The Petrograd Physico-Mathematical Society.

**List of References**(4 books/articles)

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