Letter The addressee is informed that he is included in a membership of the All-Union symposium "Regularities and actual tendencies of development of mathematics" (26-30.09.1986, Obninsk), and his report is inserted in the symposium programme. Date: 13.01.1986 Original document language: Russian Authors: Vladimir I. Kuptsov, A.P. Yushkevich Organizations: Moscow University, USSR Philosophy Society Addressee: Andrei Petrovich Ershov
