The Riemann zeta function and tuning: Difference between revisions
Wikispaces>genewardsmith **Imported revision 250507782 - Original comment: ** |
Wikispaces>genewardsmith **Imported revision 250508176 - Original comment: ** |
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<h2>IMPORTED REVISION FROM WIKISPACES</h2> | <h2>IMPORTED REVISION FROM WIKISPACES</h2> | ||
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | ||
: This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2011-09-03 13: | : This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2011-09-03 13:34:09 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>250508176</tt>.<br> | ||
: The revision comment was: <tt></tt><br> | : The revision comment was: <tt></tt><br> | ||
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br> | ||
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[[math]] | [[math]] | ||
\zeta(s) = \ | \zeta(s) = \prod_p (1 - p^{-s})^{-1} | ||
[[math]] | [[math]] | ||
where the product is over all primes p. The product converges for values of s with real part greater than or equal to one, except for s=1 where it diverges to infinity. We may remove a finite list of primes from consideration by multiplying zeta(s) by the corresponding factors (1-p^(-s)) for each prime p we wish to remove. After we have done this, the smallest prime remaining will dominate peak values for s with large real part, and as before we can track these peaks backwards and, by analytical continuation, into the critical strip. In particular if we remove the prime 2, (1-2^(-s))zeta(s) is now dominated by 3, and the large peak values occur near equal divisions of the "tritave", ie 3. | |||
track these peaks backwards and, by analytical continuation, into the critical strip. In particular if we remove the prime 2, | |||
(1-2^(-s))zeta(s) is now dominated by 3, and the large peak values occur near equal divisions of the "tritave", ie 3. | |||
Along the critical line, |1 - p^(-1/2-i t)| may be written | Along the critical line, |1 - p^(-1/2-i t)| may be written | ||
[[math]] | [[math]] | ||
1 + \frac{1}{p} - \frac{2 \cos(\ln p t)}{\sqrt{p}} | 1 + \frac{1}{p} - \frac{2 \cos(\ln\ p t)}{\sqrt{p}} | ||
[[math]] | [[math]] | ||
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<!-- ws:start:WikiTextMathRule:11: | <!-- ws:start:WikiTextMathRule:11: | ||
[[math]]&lt;br/&gt; | [[math]]&lt;br/&gt; | ||
\zeta(s) = \ | \zeta(s) = \prod_p (1 - p^{-s})^{-1}&lt;br/&gt;[[math]] | ||
--><script type="math/tex">\zeta(s) = \ | --><script type="math/tex">\zeta(s) = \prod_p (1 - p^{-s})^{-1}</script><!-- ws:end:WikiTextMathRule:11 --><br /> | ||
<br /> | <br /> | ||
where the product is over all primes p. The product converges for values of s with real part greater than or equal to one, except for s=1 where it diverges to infinity. We may remove a finite list of primes from consideration by multiplying zeta(s) by the corresponding factors (1-p^(-s)) for each prime p we wish to remove. After we have done this, the smallest prime remaining will dominate peak values for s with large real part, and as before we can track these peaks backwards and, by analytical continuation, into the critical strip. In particular if we remove the prime 2, (1-2^(-s))zeta(s) is now dominated by 3, and the large peak values occur near equal divisions of the &quot;tritave&quot;, ie 3. <br /> | |||
track these peaks backwards and, by analytical continuation, into the critical strip. In particular if we remove the prime 2, | |||
(1-2^(-s))zeta(s) is now dominated by 3, and the large peak values occur near equal divisions of the &quot;tritave&quot;, ie 3. <br /> | |||
<br /> | <br /> | ||
Along the critical line, |1 - p^(-1/2-i t)| may be written<br /> | Along the critical line, |1 - p^(-1/2-i t)| may be written<br /> | ||
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<!-- ws:start:WikiTextMathRule:12: | <!-- ws:start:WikiTextMathRule:12: | ||
[[math]]&lt;br/&gt; | [[math]]&lt;br/&gt; | ||
1 + \frac{1}{p} - \frac{2 \cos(\ln p t)}{\sqrt{p}}&lt;br/&gt;[[math]] | 1 + \frac{1}{p} - \frac{2 \cos(\ln\ p t)}{\sqrt{p}}&lt;br/&gt;[[math]] | ||
--><script type="math/tex">1 + \frac{1}{p} - \frac{2 \cos(\ln p t)}{\sqrt{p}}</script><!-- ws:end:WikiTextMathRule:12 --><br /> | --><script type="math/tex">1 + \frac{1}{p} - \frac{2 \cos(\ln\ p t)}{\sqrt{p}}</script><!-- ws:end:WikiTextMathRule:12 --><br /> | ||
<br /> | <br /> | ||
Multiplying the Z-function by this factor of adjustment gives a Z-function with the prime p removed from consideration. Zeta peak and zeta integral tunings may then be found as before.<br /> | Multiplying the Z-function by this factor of adjustment gives a Z-function with the prime p removed from consideration. Zeta peak and zeta integral tunings may then be found as before.<br /> |