Institute of
Discrete Mathematics and Geometry



Arbeitsgemeinschaft Diskrete Mathematik

Info: Das Seminar AGDM wird gemeinsam mit Kollegen der Universität Wien veranstaltet.

Zeit: Dienstags, 15.15 - 16.45h,

Ort: TU-Wien, Freihaus (4., Wiedner Hauptstraße 8-10), Dissertantenraum, grüner Turm (A), 8. Stock.

Aktueller Termin


Datum:17.01.2012
Titel:"The corner transfer matrix renormalization group method: series expansions and applications"
Vortragender:Yao-ban Chan (Univ. Wien).



Inhalt:

The corner transfer matrix renormalization group method is a powerful algorithm for evaluating physical quantities in statistical mechanical models. It was developed by Nishino and Okunishi in 1996, and originates from Baxter's corner transfer matrix equations and method devised in the late 70s.The method has been applied to numerous models since its development, but only numerically, while Baxter's original method was used to calculate series expansions. In this talk, we give a detailed description of the original CTM equations and the CTMRG method. Then we describe our adaptation of this method which can calculate series expansions. We have applied this method to several models --- of particular interest is the generating function of self-avoiding polygons --- and we present our results.




 

Vorträge in früheren Jahren

Übersicht: Vorträge Zeitraum 2005 - 2011


Vorträge 2011/2012

Datum:10.01.2012
Titel:"A Central Limit Theorem for the Number of Degree-$k$ Vertices in Random Maps"
Vortragender:Michael Drmota.

Datum:13.12.2011
Titel:"EL-Shellability of Generalized Noncrossing Partitions Associated to Well-Generated Complex Reflection Groups"
Vortragender:Henri Mühle (Univ. Wien).

Datum:06.12.2011
Titel:"Euclidean unit-distance graphs and pathological selfmaps of euclidean space of low dimension"
Vortragender:Gert Sabidussi (Montreal).

Datum:29.11.2011
Titel:"The Strong Five Cycle Double Cover Conjecture"
Vortragender:Arthur Hoffmann-Ostenhof (Wien).

Datum: 22.11.2011
Titel:"Tiling n-space by unit cubes"
Vortragender:Peter Horak (Tacoma).

Datum: 08.11.2011
Titel:"Counting regions in the Catalan arrangement with a fixed separating wall"
Vortragende:Eleni Tzanaki.

Datum: 25.10.2011
Titel:"Triangular Fully Packed Loop configurations and their enumeration via perfect matchings, path configurations and puzzles''
Vortragender:Philippe Nadeau.

Datum: 18.10.2011
Titel:"Decreasing Monotone Triangles and their connection to ordinary Monotone Triangles"
Vortragender:Lukas Riegler.