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Prime zeta function : ウィキペディア英語版
Prime zeta function
In mathematics, the Prime zeta function is an analogue of the Riemann zeta function, studied by . It is defined as the following infinite series, which converges for \Re(s) > 1:
:P(s)=\sum_.
== Properties ==

The Euler product for the Riemann zeta function ζ(''s'') implies that
:\log\zeta(s)=\sum_ \frac
which by Möbius inversion gives
:P(s)=\sum_ \mu(n)\frac
When ''s'' goes to 1, we have P(s)\sim \log\zeta(s)\sim\log\left(\frac\right).
This is used in the definition of Dirichlet density.
This gives the continuation of ''P''(''s'') to \Re(s) > 0, with an infinite number of logarithmic singularities at points ''s'' where ''ns'' is a pole (only ''ns=1'')), or zero of the Riemann zeta function ζ(.). The line \Re(s) = 0 is a natural boundary as the singularities cluster near all points of this line.
If we define a sequence
:a_n=\prod_ \frac=\prod_ \frac
then
:P(s)=\log\sum_^\infty \frac.
(Exponentiation shows that this is equivalent to Lemma 2.7 by Li.)
The prime zeta function is related with the Artin's constant by
:\ln C_^ \frac
where ''L''''n'' is the ''n''th Lucas number.
Specific values are:
+ \tfrac + \tfrac + \tfrac + \tfrac + \cdots \to \infty. ||
|-
| 2 || 045224\text74200\text41065\text49850 \ldots ||
|-
| 3 || 017476\text26392\text99443\text53642 \ldots ||
|-
| 4 || 007699\text31397\text64246\text84494 \ldots ||
|-
| 5 || 003575\text50174\text83924\text25713 \ldots ||
|-
| 9 || 000200\text44675\text74962\text45066 \ldots ||
|}

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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