Novosibirsk 630090

USSR SBAS Computing Center

USSR AS Corr. Member A.P. Ershov

Dear Andrei Petrovich!

I’d like to thank you sincerely for the invitation to take part in the work of symposium “Algorithms
in modern mathematics and its applications”. This invitation is a great honor to me and I accept it
with gratitude.

If the program of the symposium permits and if a talk on similar subject is not proposed to some
other participant, I could could make a presentation titled “ On the role of algorithm in semantics
evolution of logical and mathematical languages”. The talk could have been devoted to evaluation of
the role of the notion of algorithm in this field and to an overview of the most important
achievements in this direction.

Yours sincerely, N.M. Nagorny

May 17, 1979

Moscow