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Documents associated with Alexei A. Lyapunov
Letter, Yu. A. Pervin ->A.P. Ershov, 25.07.1973about personal problems and possible visit to Novosibirsk; about thesis defending; about current scientific matters.
Letter, L. E. Sadovsky->A.P. Ershov, 12.08.1973Request to be an official opponent at V.N. Lifshits’s thesis defending; short account of the work’s history and of interaction with A.A. Liapunov.
Decision, 19.03.1975
Letter, A.P. Ershov->E. A. Feigenbaum, 09.08.1967
Letter (hand-written), Yu. A. Pervin ->A.P. Ershov, 22.06.1969
Letter, A.P. Ershov->S. V. Yablonsky, 23.11.1977
Review, 25.10.1986
Decision, I. I. Geitsi ->A.P. Ershov..., 19.03.1975
Decision, G. I. Marchuk->A.P. Ershov..., 07.12.1972
Telegram, A.P. Ershov->N. N. Borodina, 15.09.1975
Telegram, A.P. Ershov->S. V. Yablonsky, 02.11.1977
Letter with attachment, S. L. Sobolev->M. A. Lavrentiev, 31.03.1967
Postcard, N. A. Lyapunova->A.P. Ershov, 14.01.1985Congratulations, New Year greetings and best wishes to Ershov and his family
Letter, A. F. Kulakov->A.P. Ershov, 05.08.1967
Letter, Unknown addressee->A. K. Romanov, 12.10.1967(?)
Letter, N.A. Karpova->A.P. Ershov, 12.03.1975Invitation to contribute to the “Problemy Kibernetiki” issue dedicated to the Prof. A.A. Liapunov’s memory.
Telegram, A. A. Lyapunov->A.P. Ershov, 28.11.1970Congratulations with being elected the USSR AS corresponding member
Decision, 21.01.1971
Item 150. (Name does not exist in this language.)
Covering letter, 20.11.1961
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