t Dr. E. T. Goodwin has pointed out to the author that there is a strong connection between the idea of the Samelson inverse and a result ([22] p. 675, eq. ( 53)) of Lanczos.-' (* -Vwhere xr is the complex conjugate of xT.The point x with respect to the unit sphere in w-space.t.
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P. Wynn (1962) studied this question.