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

␈↓ ↓H␈↓∧Telephone 415 497-4430␈↓ 
¬March 15, 1979 




␈↓ ↓H␈↓Professor S. Takasu
␈↓ ↓H␈↓Research Institute for Mathematical Sciences
␈↓ ↓H␈↓Kyoto University
␈↓ ↓H␈↓Kyoto, Japan

␈↓ ↓H␈↓Dear Professor Takasu:

␈↓ ↓H␈↓Enclosed␈α
are␈αtwo␈α
additional␈αcopies␈α
of␈αthe␈α
paper,␈αone␈α
with␈αrunning␈α
heads␈αand␈α
the␈α
other␈αwithout.
␈↓ ↓H␈↓The␈αonly␈αchange␈αis␈αthat␈αthe␈αauthor's␈αaddresses␈αand␈αsome␈αadditional␈αgrant␈αinformation␈αwas␈αadded
␈↓ ↓H␈↓to the ≡rst page.

␈↓ ↓H␈↓Also,␈α∞could␈α∞you␈α∞please␈α∞send␈α∞me␈α∞the␈α∞correct␈α∞publication␈α∞information␈α∞so␈α∞that␈α∞I␈α∞may␈α∞reference␈α
the
␈↓ ↓H␈↓paper.

␈↓ ↓H␈↓Best regards to you and Mrs. Takasu.


␈↓ ↓H␈↓Sincerely,



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