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In [[mathematics]], the '''Artin&ndash;Mazur [[zeta function]]''', named after [[Michael Artin]] and [[Barry Mazur]], is a tool for studying the [[iterated function]]s that occur in [[dynamical systems]] and [[fractals]].
 
It is defined as the [[formal power series]]
 
:<math>\zeta_f(z)=\exp (\sum_{n=1}^\infty \textrm{card}
\left(\textrm{Fix} (f^n)\right) \frac {z^n}{n}),</math>
 
where Fix(''&fnof;''<sup>&nbsp;''n''</sup>) is the set of [[Fixed point (mathematics)|fixed point]]s of the ''n''th iterate of an [[iterated function]] ''&fnof;'', and card(Fix(''&fnof;''<sup>&nbsp;''n''</sup>)) is the [[cardinality]] of this set of fixed points.
 
Note that the zeta function is defined only if the set of fixed points is finite. This definition is formal in that it does not always have a positive [[radius of convergence]].
 
The Artin&ndash;Mazur zeta function is invariant under [[topological conjugation]].
 
The [[Milnor–Thurston kneading theory|Milnor&ndash;Thurston theorem]] states that the Artin&ndash;Mazur zeta function is the inverse of the [[kneading determinant]] of ''&fnof;''.
 
==Analogues==
 
The Artin&ndash;Mazur zeta function is formally similar to the [[local zeta function]], when a [[diffeomorphism]] on a compact manifold replaces the [[Frobenius mapping]] for an [[algebraic variety]] over a [[finite field]].
 
The [[Ihara zeta function]] of a graph can be interpreted as an example of the Artin&ndash;Mazur zeta function.
 
==See also==
 
*[[Lefschetz number]]
*[[Lefschetz zeta function|Lefschetz zeta-function]]
 
== References ==
* {{Citation | doi=10.2307/1970384 | last1=Artin | first1=Michael | author1-link=Michael Artin | last2=Mazur | first2=Barry | author2-link=Barry Mazur | title=On periodic points | mr=0176482 | year=1965 | journal=[[Annals of Mathematics|Annals of Mathematics. Second Series]] | issn=0003-486X | volume=81 | pages=82–99 | issue=1 | publisher=Annals of Mathematics | jstor=1970384}}
* [[David Ruelle]], [http://www.maths.ex.ac.uk/~mwatkins/zeta/ruelle.pdf Dynamical Zeta Functions and Transfer Operators] (2002) (PDF)
* {{citation | title=Zeta Functions of Graphs: A Stroll through the Garden | volume=128 | series=Cambridge Studies in Advanced Mathematics | first=Audrey | last=Terras | authorlink=Audrey Terras | publisher=[[Cambridge University Press]] | year=2010 | isbn=0-521-11367-9 | zbl=1206.05003 }}
 
{{DEFAULTSORT:Artin-Mazur zeta function}}
[[Category:Zeta and L-functions]]
[[Category:Dynamical systems]]
[[Category:Fixed points (mathematics)]]

Revision as of 01:39, 30 January 2014

In mathematics, the Artin–Mazur zeta function, named after Michael Artin and Barry Mazur, is a tool for studying the iterated functions that occur in dynamical systems and fractals.

It is defined as the formal power series

ζf(z)=exp(n=1card(Fix(fn))znn),

where Fix(ƒ n) is the set of fixed points of the nth iterate of an iterated function ƒ, and card(Fix(ƒ n)) is the cardinality of this set of fixed points.

Note that the zeta function is defined only if the set of fixed points is finite. This definition is formal in that it does not always have a positive radius of convergence.

The Artin–Mazur zeta function is invariant under topological conjugation.

The Milnor–Thurston theorem states that the Artin–Mazur zeta function is the inverse of the kneading determinant of ƒ.

Analogues

The Artin–Mazur zeta function is formally similar to the local zeta function, when a diffeomorphism on a compact manifold replaces the Frobenius mapping for an algebraic variety over a finite field.

The Ihara zeta function of a graph can be interpreted as an example of the Artin–Mazur zeta function.

See also

References

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  • David Ruelle, Dynamical Zeta Functions and Transfer Operators (2002) (PDF)
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

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    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010