17/12/03 17:07:22.95 rPUpBQUT.net
>>283つづき
URLﾘﾝｸ(mathforum.org)
Topic: Differentiability of the Ruler Function Dave L. Renfro Posted: Dec 13, 2006 Replies: 3 Last Post: Jan 10, 2007
(抜粋)
We would expect higher powers of f to be smoother,
and this is what we find. Note that for each r > 0,
the sets where f^r is continuous and discontinuous
is the same as for f.
** For each 0 < r <= 2, f^r is nowhere differentiable.
** For each r > 2, f^r is differentiable on a set that
has c many points in every interval.
つづく