He was studying the Russian Symbolist poet Innokenty Annensky and Dusa had no specific plans, yet it would turn out a very profitable visit for her mathematically.
Siya ay pag-aralan ang Russian simbolista makata Innokenty Annensky at Dusa ay walang tiyak na plano, ito pa ay patayin ng isang napaka-mahalaga para sa kanya bisitahin mathematically.