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Topic: Series Questions
Replies: 20   Last Post: Apr 21, 1996 11:07 AM

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Ted Alper

Posts: 51
Registered: 12/6/04
Re: Series Questions
Posted: Apr 11, 1996 8:45 PM
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OK -- let me somewhat amend my previous post -- though the conclusions
still seem valid to me:


I showed: the average value for

sum (sin(c+n)^n) is about sqrt(N/pi)
n=0..N

but of course, that by itself doesn't even preclude the sum
converging to 0 almost everywhere (that's a standard
elementary real analysis question.)Still, it's at least suggestive!

Suggestive too, is that sin(theta) > (1/2)^(1/n)
with measure about C/sqrt(n).
[initially I estimated by using just 1 - (1/2)^(1/n);
that give only ln(n)/n) --- which is still sufficient ---
but taking the arcsin for values up near 1 improves that considerably!]

This *really* strongly suggests that for almost all points c there will be an
infinite number of n for which sin(c+n)^(1/n) is bigger than 1/2.
It still doesn't *prove* it, of course, but it's almost there -- and when
you consider that the integer translations of pi/2 on the unit circle form a
dense set it seems even more suggestive...






Ted Alper
alper@epgy.stanford.edu





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