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␈↓ ↓H␈↓␈↓βS␈↓∧ Artificial Intelligence Laboratory, STANFORD UNIVERSITY, Stanford, California 94305

␈↓ ↓H␈↓∧Telephone 415 497-4430␈↓ 	␈October 9, 1978 




␈↓ ↓H␈↓Professor Tuan Hsio-fu, Chairman
␈↓ ↓H␈↓Department of Mathematics
␈↓ ↓H␈↓Peking University
␈↓ ↓H␈↓Peking, China

␈↓ ↓H␈↓Dear Professor Tuan:

␈↓ ↓H␈↓        Professor␈α⊂Hsu␈α⊂Kung-shih␈α⊃has␈α⊂asked␈α⊂me␈α⊃to␈α⊂write␈α⊂con≡rming␈α⊃my␈α⊂oral␈α⊂statement␈α⊃that␈α⊂the
␈↓ ↓H␈↓Stanford␈α∂University␈α∞Arti≡cial␈α∂Intelligence␈α∞Laboratory␈α∂could␈α∂receive␈α∞Mr.␈α∂Ma␈α∞Shi-wen␈α∂as␈α∂a␈α∞post-
␈↓ ↓H␈↓doctoral␈α∂scholar␈α∂for␈α∂a␈α∞period␈α∂of␈α∂up␈α∂to␈α∂one␈α∞year.␈α∂ On␈α∂the␈α∂basis␈α∞of␈α∂Mr.␈α∂Ma's␈α∂description␈α∂of␈α∞his
␈↓ ↓H␈↓research␈α
interests␈α∞and␈α
activities␈α
given␈α∞during␈α
my␈α
visit␈α∞to␈α
Peking␈α
University,␈α∞it␈α
looks␈α
like␈α∞such␈α
a
␈↓ ↓H␈↓visit␈α
would␈α
be␈α
of␈α
mutual␈α
bene≡t.␈α
 We␈α
could␈α
provide␈α
him␈α
with␈α
o≠ce␈α
space,␈α
use␈α
of␈α∞the␈α
computer,
␈↓ ↓H␈↓and␈α
access␈αto␈α
general␈α
university␈αfacilities.␈α
 We␈α
cannot␈αpay␈α
travelling␈α
or␈αliving␈α
expenses␈α
or␈αa␈α
salary.
␈↓ ↓H␈↓I think he would ≡nd many people here with whom he shares scienti≡c interests.

␈↓ ↓H␈↓        Mr.␈αMa␈α
would␈αbe␈α
welcome␈αas␈α
soon␈αas␈α
it␈αis␈αconvenient␈α
for␈αhim␈α
to␈αcome␈α
but␈αbefore␈α
June␈α1,
␈↓ ↓H␈↓1979.␈α However,␈αI␈αwill␈αbe␈αon␈αleave␈αat␈αthe␈αCenter␈αfor␈αAdvanced␈αStudy␈αin␈αthe␈αBehavioral␈αSciences
␈↓ ↓H␈↓from␈α
September␈α1979␈α
to␈α
June␈α1980.␈α
 This␈αCenter␈α
is␈α
at␈αStanford,␈α
so␈αI␈α
will␈α
still␈αbe␈α
available␈αsome␈α
of
␈↓ ↓H␈↓the␈α∞time,␈α∞and␈α∞Mr.␈α∞Ma␈α∞will␈α∞≡nd␈α∂many␈α∞people␈α∞here␈α∞at␈α∞the␈α∞Arti≡cial␈α∞Intelligence␈α∂Laboratory␈α∞with
␈↓ ↓H␈↓whom␈αto␈αwork.␈α Should␈αit␈αnot␈αbe␈αconvenient␈αfor␈αhim␈αto␈αcome␈αby␈αJune␈α1979,␈αit␈αmight␈αbe␈αbetter␈α
for
␈↓ ↓H␈↓him to wait until June 1980.

␈↓ ↓H␈↓        In␈αorder␈αto␈αcomplete␈αarrangements␈αfor␈αsuch␈αa␈αvisit,␈αI␈αneed␈αa␈αscienti≡c␈αbiography␈αof␈αMr.␈αMa
␈↓ ↓H␈↓and␈α
a␈α∞written␈α
statement␈α∞of␈α
his␈α
research␈α∞interests␈α
to␈α∞circulate␈α
to␈α
other␈α∞members␈α
of␈α∞the␈α
Computer
␈↓ ↓H␈↓Science␈αDepartment.␈α
 Once␈αwe␈α
have␈αthese,␈α
we␈αcan␈α
act␈αvery␈α
quickly.␈α Two␈α
pages␈αabout␈αhis␈α
research
␈↓ ↓H␈↓would␈α∞be␈α∞adequate,␈α∞but␈α∞reprints␈α∞of␈α∞papers␈α∞or␈α∞reports␈α∞would␈α∞be␈α∞welcome␈α∞whether␈α∞in␈α∂English␈α∞or
␈↓ ↓H␈↓Chinese.

␈↓ ↓H␈↓        I␈αalso␈αtold␈αProfessor␈αHsu␈αthat␈αI␈αthought␈αthat␈αMr.␈αHung␈αChia-wei␈αwould␈αbe␈αan␈αappropriate
␈↓ ↓H␈↓visitor␈α⊂to␈α⊂the␈α⊂group␈α⊂in␈α⊂our␈α⊂department␈α⊂working␈α⊂on␈α⊂complexity␈α⊂theory.␈α⊂ (The␈α⊂group␈α∂comprises
␈↓ ↓H␈↓Professors␈α∞Robert␈α∂Floyd,␈α∞Robert␈α∞Tarjan,␈α∂Andrew␈α∞Yao␈α∞and␈α∂Frances␈α∞Yao).␈α∞ Mr.␈α∂Hung's␈α∞research
␈↓ ↓H␈↓looked␈αinteresting,␈αbut␈αthey␈αalso␈αneed␈αa␈αa␈αscienti≡c␈αbiography␈αand␈αwritten␈αdescription␈α
of␈αresearch
␈↓ ↓H␈↓interests before they can decide to make an invitation.

␈↓ ↓H␈↓        I␈αenclose␈αa␈αsheet␈αthat␈αthe␈αInternational␈αCenter␈αat␈αStanford␈αsends␈αto␈αforeign␈αscholars␈αvisiting
␈↓ ↓H␈↓Stanford.␈α The␈αpart␈α
about␈αthe␈α"Certi≡cate␈αof␈α
Eligibility"␈αis␈αnot␈αyet␈α
relevant,␈αbut␈αthe␈αgeneral␈α
advice
␈↓ ↓H␈↓for foreign scholars will be useful.

␈↓ ↓H␈↓        Visits␈αfor␈α
Mr.␈αMa␈α
and␈αMr.␈α
Hung␈αcan␈αbe␈α
arranged␈αeither␈α
directly␈αwith␈α
our␈αdepartment␈αor␈α
as
␈↓ ↓H␈↓part␈αof␈αgeneral␈αagreements␈αbetween␈αStanford␈αUniversity␈αand␈αChinese␈αinstitutions.␈α If␈αthey␈αneed␈αto
␈↓ ↓H␈↓αProfessor Tuan Hsio-fu␈↓ ¬dOctober 9, 1978␈↓ 
nPage 2␈↓ 

␈↓ ↓H␈↓take␈αpart␈αin␈αthe␈α
English␈αfor␈αForeign␈αStudents␈α
program,␈αthen␈αit␈αmight␈α
be␈αbetter␈αto␈αwork␈αwithin␈α
the
␈↓ ↓H␈↓general␈αagreement,␈α
because␈αthe␈α
number␈αof␈αstudents␈α
that␈αcan␈α
be␈αaccomodated␈α
in␈αthe␈αEnglish␈α
classes
␈↓ ↓H␈↓is limited.

␈↓ ↓H␈↓        Finally, I would like to thank you for your hospitality at Peking University.


␈↓ ↓H␈↓Sincerely,



␈↓ ↓H␈↓John McCarthy
␈↓ ↓H␈↓Director
␈↓ ↓H␈↓Professor of Computer Science

␈↓ ↓H␈↓cc:␈α∩Professor␈α⊃Hsu␈α∩Kung-shih,␈α∩Dr.␈α⊃Douglas␈α∩Murray,␈α⊃Professor␈α∩Edward␈α∩Feigenbaum,␈α⊃Professor
␈↓ ↓H␈↓Frances Yao.