[DissKoll] DissKoll; May 7, 2009 ; Markus Kuba

[Klemens Katterbauer]

Dear visitors of the DissKoll (Dissertantenkolloquium),

 On May 7, 2009, the DissKoll will start out with its first talk in spring
2009.  Markus Kuba (Technical University of Vienna, DMG) will talk about
“Stirling permutations and trees”.



Abstract: Stirling permutations were introduced by Gessel and Stanley. A
Stirling permutation is a permutation of the multiset $\{1,1,2,2,dots,n,n\}$
such that for each $i$, the elements occuring between the two occurrences of
$i$ are larger than $i$. Stirling permutations are naturally related
to second order Eulerian numbers and to Stirling polynomials.

We will present generalized Stirling permutations and relate them with
certain families of increasing trees. The close relationship between
Stirling permutations and trees allows to analyze parameters in Stirling
permutations by analyzing their counterparts in the corresponding tree
family. Furthermore, several parameters in random Stirling permutations
can be described by so-called P\'olya-Eggenberger urn models. We present
several results obtained using combinatorial and probabilistic methods.





Thursday, May 7, 2009, 17:15, Room C 2.09
Coffee and cakes served from 17:00 in the Common Room C 2.06


Program and further information you can find at
http://www.mat.univie.ac.at/~disskoll/<http://www.mat.univie.ac.at/%7Edisskoll/>

If you are interested in giving a talk, then please contact Klemens
Katterbauer via the below given E-mail address or cell phone number.

To join the mailing list, visit
http://www.mat.univie.ac.at/mailman/listinfo/disskoll

 Comments and feedback are welcomed.


We are looking forward to your attendance,

 Markus Kuba
Clemens Hanel
Klemens Katterbauer



+++++++++++++++++++++++++++++++++++++++++++++++++++



Liebe Besucherinnen und Besucher des DissKoll(Dissertantenkolloquium)!

Am Donnerstag den 7. Mai 2009 findet der erste Vortrag im Rahmen des
DissKoll in diesem Semester statt. Markus Kuba spricht über “Stirling
permutations and trees”.

Abstract: Stirling permutations were introduced by Gessel and Stanley. A
Stirling permutation is a permutation of the multiset $\{1,1,2,2,dots,n,n\}$
such that for each $i$, the elements occuring between the two occurrences of
$i$ are larger than $i$. Stirling permutations are naturally related
to second order Eulerian numbers and to Stirling polynomials.

We will present generalized Stirling permutations and relate them with
certain families of increasing trees. The close relationship between
Stirling permutations and trees allows to analyze parameters in Stirling
permutations by analyzing their counterparts in the corresponding tree
family. Furthermore, several parameters in random Stirling permutations
can be described by so-called P\'olya-Eggenberger urn models. We present
several results obtained using combinatorial and probabilistic methods.



Donnerstag, 7. Mai 2009, 17:15, Seminarraum C 2.09
Kaffee und Kuchen ab 17:00 im Common Room C 2.06

Wir freuen uns auf euer Kommen,

Markus Kuba
Clemens Hanel
Klemens Katterbauer



Das weitere Programm für dieses Semester findet ihr auf
http://www.mat.univie.ac.at/~disskoll/<http://www.mat.univie.ac.at/%7Edisskoll/>


-- 
Klemens Katterbauer
Student of Mathematics
Tel. No. (+43) 664 7375 4846
homepage: http://members.aon.at/klemensk/

Klemens Katterbauer
Matematik öğrencisi
Tel. numarası: (+43) 664 7375 4846
anasayfa: http://members.aon.at/klemensk/


Klemens Katterbauer
대학생 수학
전화번호: (+43) 664 7375 4846

克林  卡塔尔柏尔-克林-泼辣
学生, 数学和经济学
维也纳大学
首页: http://members.aon.at/klemensk/

Margaritenweg 8
2301 Groß-Enzersdorf, AUSTRIA (奥地利)

电邮地址: katterbauer.klemens at gmail.com
电话号码: (+43) 664 7375 4846
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