女生小视频

Cash and kudos

1 August 1998

Those made of sterner stuff, however, will appreciate Ron Graham and Fan
Chung’s Erd枚s on Graphs, a beautifully produced collection of many of the
outstanding puzzles in graph theory left unsolved after Erd枚s’s death. And
there’s more than kudos awaiting those who solve some of the problems within,
too. Following one of Erd枚s’s typically eccentric traditions, the authors
are offering cash prizes of up to a thousand dollars to those who can solve
problems that even a benzedrine-powered genius couldn’t get his head round.
Published by A. K. Peters, 拢20/$30, ISBN 1568810792.

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