Kakeya needle problem 答案是arbitrarily small


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送交者: lightman 于 2009-01-15, 03:22:23:

Wiki里都说了,引用的都没仔细看吗?

http://en.wikipedia.org/wiki/Kakeya_set#Kakeya_needle_problem

引用:
Besicovitch[2] was able to show that there is no lower bound > 0 for the area of such a region D, in which a needle of unit length can be turned round.




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