Nicolai Alexandrovich Vasiliev (Russian: Николай Александрович Васильев), also Vasil'ev, Vassilieff, Wassilieff (11 July [O.S.
His only work in a foreign language (English) - a concise abstract of his "imaginary logic" - was published in Naples in 1924.
This act aggravated his ailment: Vasiliev spent most of the following 20 years in a mental hospital, thus rescued from the Stalin regime.
[2] The pioneer ideas of Vasiliev were rediscovered in the early 1960s by Vladimir Smirnov, and formed a basis mainly for paraconsistent logic.
In 2012 an international conference on Vasiliev's work was held in Moscow where a number of important modern paraconsistent logicians contributed.