CRC701-Workshop

Aspects of Aperiodic Order

3-5 July 2008, University of Bielefeld

organised by

Daniel Lenz (Chemnitz) and Christoph Richard (Bielefeld)

The workshop will be held at the University of Bielefeld, a week prior to the 10th International Conference on Quasicrystals at the ETH Zürich. It will be an opportunity to discuss mathematical aspects of quasicrystals. Our intent is to leave ample opportunity for discussion. For this reason, the number of talks will be rather limited. If you are interested in attending, please send an email to Daniel Lenz (dlenz at mathematik dot uni minus chemnitz dot de).

Participants:

    Michael Baake, Bielefeld
    Lubomira Balkova, Prague, Czech Republic
    Jean Bellissard, Atlanta, USA
    Shelomo Ben-Abraham, Ben-Gurion University, Israel
    Adnene Besbes, Paris, France
    Housem Boulmezaoud, Lyon, France
    David Damanik, Houston, USA
    Shahar Dar Mandel, Tel Aviv, Israel
    Nicolas Destainville, Toulouse, France
    Michal Duda, Krakow, Poland
    Dirk Frettlöh, Bielefeld
    Jean-Pierre Gazeau, Paris, France
    Franz Gähler, Stuttgart
    Denis Gratias, Chatillon, France
    Uwe Grimm, Milton Keynes, UK
    Petra Gummelt, Greifswald
    Manuela Heuer, Milton Keynes, UK
    Ted Janssen, Nijmegen, Netherlands
    Antoine Julien, Lyon, France
    Gerald Kasner, Magdeburg
    Jeong-Yup Lee, Seoul, Korea
    Daniel Lenz, Chemnitz
    Ron Lifshitz, Tel Aviv, Israel
    Robert V. Moody, Victoria, Canada
    Peter Müller, Göttingen
    Fumihiko Nakano, Sendai, Japan
    Zorka Papadopolos, Tübingen
    Alexander Quandt, Greifswald
    Johannes Roth, Stuttgart
    Taizo Sadahiro, Kumamoto, Japan
    Bernd Sing, Bath, UK
    Ivan Veselic, Chemnitz
    Janusz Wolny, Krakow, Poland
    Peter Zeiner, Bielefeld

Schedule

The scientific talks will start on Thursday and will end on Saturday noon, see below.

There will be an evening welcome event on Wednesday starting 20.00 at the Brauhaus Johann Albrecht, Hagenbruchstrasse 8. It is located in the city center in walking distance to the hotels, see the map.

A workshop dinner will take place on Friday night, 19.30h, at the Italian restaurant La Trattoria, Niederwall 37. It is located in the city center in walking distance to the hotels. Take tram 4 and exit Rathaus. The restaurant is within 100m walking distance. To participate, we ask for a contribution of 20 Euro per person, which can be paid during the coffee breaks.

Posters will be presented near the lecture room V2-105/115 throughout the workshop. This includes:

    M. Baake, D. Frettlöh (Bielefeld), U. Grimm (Milton Keynes): Pinwheel patterns and powder diffraction

    A. Besbes (Paris): Thermodynamic formalism on aperiodic linearly repetitive tilings

    S. Dar Mandel (Tel Aviv): Rethinking the inverse participation ratio

    D. Frettlöh (Bielefeld): Counting colour symmetries of plane regular tilings

    F. Gähler (Stuttgart), J. Hunton (Leicester), J. Kellendonk (Lyon): Cech Cohomology of Canonical Projection Tilings

    M. Heuer (Milton Keynes): Similar sublattices and coincidence rotations of the root lattice A4 and its dual

    G. Kasner (Magdeburg): Towards a complete covering of the icosahedral canonical tiling T^*(2F) - New aspects of uncovered tiles in the Delone-approach

    M. Loquias (Bielefeld): Coincidences of colorings and sublattices

    Z. Papadopolos (Tübingen): How microscopy helps to model quasicrystals

    J. Roth (Stuttgart): 1) Quasicrystalline potential landscapes, 2) Restricted square-triangle tilings

    B. Sing (Bath): Modulated quasicrystals

    J. Wolny, B. Kozakowski, P. Kuczera, H. Takakura: Real space refinement of decagonal quasicrystal

    M. Duda, B. Kozakowski, J. Wolny (Krakow): Structural changes during phase transition of Mg2Al3

    P. Zeiner (Bielefeld): Multiple coincidences in dimension d=4

Thursday

The talks will take place in room V2-105/115, see also travel information below. Abstracts may be found here.

09.30-09.45		opening
09.45-10.15	D. Gratias	Mathematics of quasicrystals: a crystallographer point of view
10.30-11.00	S. Ben-Abraham	Crystals and beyond
	coffee break
11.40-12.30	D. Damanik	Aperiodic order and anomalous transport
	lunch break
16.00-16.50	J.-P. Gazeau	Classification of diffraction spectra of aperiodic crystals based on multiresolution analysis
	coffee break
17.20-17.50	L. Balkovà	Asymptotic behaviour of beta-integers
18.00-18.30	B. Sing	The ``local-global-principle'' for model sets

Friday

The first talk will be held in room U2-119, all other talks will take place in room V2-105/115. Abstracts may be found here.

09.00-09.50	I. Veselić	Percolation on Cayley and quasi-transitive graphs
10.10-11.00	P. Müller	Random colourings of quasiperiodic graphs: ergodic and spectral properties
	coffee break
11.40-12.30	R.V. Moody	Which distributions of matter diffract III
	lunch break
16.00-16.50	J. Bellissard	Riemannian geometry of metric Cantor sets and their Brownian motion
	coffee break
17.30-18.20	R. Lifshitz	Quasiperiodic order via partial differential equations

A workshop dinner at La Trattoria, Niederwall 37, will commence on 19.30, see above for information how to get there.

Saturday morning

All talks will take place in room V2-105/115. Abstracts may be found here.

09.00-09.50	A. Julien	Complexity and cohomology for cut and project tilings
10.10-10.40	F. Gähler	Integer Cech Cohomology of Canonical Projection Tilings
	coffee break
11.10-12.00	F. Nakano	A substitution rule for the Penrose tiling
12.10-13.00	J.-Y. Lee	The Meyer property on substitution point sets

Travel information may be found here. To go from the station or from city center to the University and vice versa, use tram no 4. There is a special ticket, the so-called 4-er Ticket, which can be used for four rides. It is sold at the vendig machines at a price of 6.40 Euros. The lecture room is V2-105/15, located in part V of building on second floor, see also the map.

Accommodation:

Please make your own arrangements for accomodation. Feel free to contact Christoph Richard (surname at math dot uni minus bielefeld dot de) should you experience difficulties in making your reservation. Below you can find possible hotels for your stay in Bielefeld, which provide pre-reserved rooms for the participants. The Hotels below are located in the City centre. University may be reached via tram no 4 (direction of Lohmannshof), entering at Rathaus. See also travel information above.

Altstadt Hotel
    Info: Altstadt-Hotel (in German; booking until 30 April 2008, code 'aperiodic order') map

Hotel Tulip Inn
    Info: Tulip Inn map (booking until 31 Mai 2008 via phone/fax or email to info@tulipinnbielefeld.com, booking code '71900')

last modified on 8 July 2008