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# Geometry of Differential Space

H. P. McKean
The Annals of Probability
Vol. 1, No. 2 (Apr., 1973), pp. 197-206
Stable URL: http://www.jstor.org/stable/2959482
Page Count: 10
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## Abstract

The purpose of this paper is to explain why it is fruitful to think of Wiener space as an infinite--dimensional sphere of radius $\infty\frac{1}{2}$. The idea goes back to Levy and Wiener and has recently been employed to advantage by Hida; Hida, Kubo, Nomoto and Yosizawa; Kono; Orihara and Umemura; their results will be reported upon below.

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