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∂AIL Professor S. Takasu↓Research Institute for Mathematical Sciences
↓Kyoto University↓Kyoto, Japan∞

Dear Professor Takasu:

	Enclosed is a revised version of my answer to Laski's question.
I shall send you an extensively revised version of my paper in a week
or two.  If that is too long please send me a telegram.

	It is too bad that the summer school didn't work out.

	Please transmit my thanks to Mrs. Takasu
for her kind letter and the calendar.

.reg