Conferences in preparation

Conferences

· N. Cotfas: Coverings with regular polygons obtained by projection,
Quasicrystals. The Silver Jubilee, Tel Aviv, Israel, Oct. 14-19, 2007
* abstract.doc * poster.dvi * Some pictures * article.ps * article.pdf * article.dvi * article.tex

· N. Cotfas: Permutation representations with application to quasicrystals and carbon nanotubes,
17^th Symposium on Condensed Matter Physics- SFKM 2007 , Vrsac, Serbia, Sept. 16-20, 2007
* abstract.pdf * abstract.ps * talk.zip * talk.pdf

· N. Cotfas: Modified version of the strip projection method and applications,
International Conference on Aperiodic Crystals , Zao, Miyagi, Japan, Sept. 17-22, 2006
*abstract.doc * poster.tex * poster.pdf * poster.dvi * poster.ps
* aperiodic06.tex * aperiodic06.pdf * aperiodic06.dvi * aperiodic06.ps
* original-of-fig4right.ps * original-of-fig5right.ps * software

· N. Cotfas: Group representations with application to quasicrystals and carbon nanotubes,
26^th International Colloquium on Group Theoretical Methods in Physics , New York, June 26-30, 2006
*abstract.doc * article.zip * article.pdf * article.ps * article.dvi
* invited-talk.tex * invited-talk.pdf * invited-talk.ps * invited-talk.dvi

· N. Cotfas: Shape invariant hypergeometric type operators and applications,
MASSEE International Congress on Mathematics MICOM-2006, Paphos, Cyprus, May 31- June 4, 2006
*abstract.doc * talk.tex * talk.pdf * talk.ps * talk.dvi *article.doc (unpublished)

· N. Cotfas: Associated hypergeometric-type functions and coherent states,
8^th WSEAS International Conference on APPLIED MATHEMATICS,
Puerto De La Cruz, Tenerife, Dec. 16-18, 2005
* article.tex * article.pdf * article.ps * article.dvi * talk.tex * talk.pdf * talk.ps * talk.dvi
* full-article.tex * full-article.pdf * full-article.ps * full-article.dvi

· N. Cotfas: Symmetries of hypergeometric type special functions,
4^th International Symposium "Quantum Theory and Symmetries" incorporating
6^th International Workshop "Lie Theory and Its Applications in Physics", Varna, August 15-21, 2005
* abstract.tex * abstract.pdf * abstract.ps * abstract.dvi * talk.tex * talk.dvi * talk.pdf * talk.ps
* article.tex * article.dvi * article.pdf * article.ps

· N. Cotfas: An alternate mathematical model for single-wall carbon nanotubes,
6^th International Conference on the Science and Application of Nanotubes, Goteborg, June 26-July 1, 2005
* abstract.html * poster.tex * poster.pdf * poster.ps * figure1.html * figure2.html

· N. Cotfas: On the self-similarities of the mathematical models used in quasicrystal physics,
Second Conference on Self-Similarity and Applications, Toulouse, June 20-24, 2005
* abstract.tex * abstract.pdf * abstract.dvi * abstract.ps * poster.tex * poster.dvi * software for quasicrystals

· N. Cotfas: Permutation representations defined by G-clusters with application to quasicrystal physics,
Discrete Groups and Geometric Structures with Applications IV, Oostende, May 31-June 3, 2005
* abstract.tex * abstract.pdf * abstract.dvi * abstract.ps * software for quasicrystals
* talk.tex * talk.pdf * talk.ps * cluster.eps

· N. Cotfas: Representations of the symmetry groups of carbon nanotubes and applications,
Discrete Groups and Geometric Structures with Applications IV, Oostende, May 31-June 3, 2005
* abstract.tex * abstract.pdf * abstract.ps * poster.tex * poster.pdf * poster.ps * figure1.html * figure2.html

· N. Cotfas: On the strip projection method and symmetry properties of the window,
9^th International Conference on Quasicrystals ICQ9, Ames (Iowa-USA), May 22-26, 2005
* abstract.html * article.tex * article.pdf * article.ps * software for quasicrystals
* poster.tex * poster.pdf * poster.ps * cluster.eps

· N. Cotfas: Quasiperiodic packings of icosahedral clusters obtained by projection,
2^th National Conference on Theoretical Physics, Constanta, August 26-29, 2004
* article.tex * article.pdf * article.dvi * article.ps * talk.tex * talk.pdf * talk.dvi * talk.ps

· N. Cotfas: Quasiperiodic packings of icosahedral clusters obtained by projection,
11^th International Conference "Symmetry Methods in Physics", Prague, June 21-24, 2004
* talk.tex * talk.pdf * talk.dvi * talk.ps * article.tex * article.pdf * article.dvi * article.ps

· N. Cotfas: Quasiperiodic packings of icosahedral clusters obtained by projection,
Fourth European Congress of Mathematics, Stockholm, June 27-July 2, 2004
* poster.tex * poster.pdf * poster.dvi * poster.ps

· N. Cotfas: Systems of orthogonal polynomials defined by hypergeometric type equations,
Fourth European Congress of Mathematics, Stockholm, June 27-July 2, 2004
* poster.tex * poster.pdf * poster.dvi * poster.ps

· N. Cotfas: Systems of orthogonal polynomials defined by hypergeometric type equations,
International Workshop on Orthogonal Polynomials: Orthogonal Polynomials
and Mathematical Physics, Leganes, July 5-8, 2004
* talk.tex * talk.pdf * talk.dvi * talk.ps

· N. Cotfas: Representations of the icosahedral group with application to quasicrystals,
International Conference on Aperiodic Crystals, Bello Horizonte (Brazil), Sept. 8-13, 2003
* abstract.tex * abstract.pdf * abstract.dvi * abstract.ps * article.tex * article.pdf * article.dvi
* article.doc * article.ps * poster.tex * poster.pdf * poster.dvi * poster.ps

· N. Cotfas: Hypergeometric type functions in a supersymmetric approach,
XIV International Congress on Mathematical Physics, Lisbon, July 28-August 2, 2003
* abstract.tex * abstract.pdf * abstract.dvi * abstract.ps * poster.tex * poster.pdf * poster.dvi * poster.ps
* article.tex * article.pdf * article.dvi * article.ps

· N. Cotfas: Raising and lowering operators in the theory of hypergeometric type equations,
5^th Congress of Romanian Mathematicians, Pitesti, June 22-28, 2003
* abstract.tex * abstract.pdf * abstract.dvi * abstract.ps
* conference.tex * conference.pdf * conference.dvi * conference.ps

· N. Cotfas: Special functions, raising and lowering operators,
XXIV International Colloquium on Group Theoretical Methods in Physics , Paris, July 15-20, 2002
* gr24.tex * gr24.pdf * gr24.dvi * gr24.ps * poster.tex * poster.pdf * poster.dvi * poster.ps

· N. Cotfas: A group-theoretic approach to quasicrystals,
International Conference on Aperiodic Crystals, Nijmegen (Holland), July 2000
* ap2000.tex * ap2000.pdf * ap2000.dvi * ap2000.ps

· N. Cotfas: Finite graphs associated with a cut-and-project set,
DI-CRM Workshop on Mathematical Physics, Prague, June, 2000
* praga.tex * praga.pdf * praga.dvi * praga.ps

· N. Cotfas: Self-similarities of model sets and their diffraction spectrum,
7^th International Conference on Quasicrystals, Stuttgart, Sept. 1999
* icq7.tex * icq7.pdf * icq7.dvi * icq7.ps

· N. Cotfas and J._L. Verger-Gaugry: Models of quasicrystals defined by G-clusters and their self-similarities,
Mathematics of Quasicrystals, Paris, Sept. 23-25, 1998
* paris98.tex * paris98.pdf * paris98.dvi * paris98.ps
* paris98a.tex * paris98a.pdf * paris98a.dvi * paris98a.ps

· N. Cotfas and J.-L. Verger-Gaugry: G-clusters and quasicrystals,
International Conference on Aperiodic Crystals, Alpe d'Huez, August, 1997
* alpehuez.tex * alpehuez.pdf * alpehuez.dvi * alpehuez.ps

· N. Cotfas: Cluster models of quasicrystals obtained by using n-dimensional permutation representations
of finite groups associated wuth their orbits, Colloque Quasicristaux , Paris , June 5-7, 1996

· N. Cotfas: 4-Dimensional crystallography and the diamond structure,
Quasicrystals International School Balatonfured , Hungary, May 13-20, 1995

· N. Cotfas: Une classe d'operateurs O_h⁷-invariants et applications dans la physique des semiconducteurs,
Colloque franco-roumain de mathematiques purres et appliquees , Paris, May 1-8, 1994