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Professor V. S. Styopin
Institute of Philosophy
USSR Academy of Sciences
121019, Moscow, Volkhonka, 14
USSR
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Dear Professor Styopin:

	If it is convenient for you, I would like to arrange a visit
to the Institute of Philosophy for the week of April 2 to April 9.
If you like I could give three lectures, the first on nonmonotonic
reasoning, the second on formalizing common sense knowledge and
the third on the relations between artificial intelligence and
philosophy.  I have a commitment to visit England the previous week,
so I have a strong preference for that time, because it's such a
long trip from California.

	I am sorry I had to postpone my visit, but I was far behind
on some writing commitments, because of the unexpected trip to Japan
in connection with receiving the Kyoto Prize.

	I would also be interested in visiting people outside the
Institute of Philosophy with whom I might have common interests.

	Vladimir Lifschitz of our department would also be a good
lecture on nonmonotonic reasoning, and his visit has been
discussed with Dr. Smirnov.  He has a commitment in England from
April 16 to April 20 and would also like to combine the trips.
Besides visiting Moscow, he wants to go to Leningrad to visit
his parents.  He could come to the Soviet Union either before
or after England.

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Sincerely,
John McCarthy
Professor

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\noindent cc: Patrick Suppes, Vladimir Lifschitz, V. Smirnov
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