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\title{{\bf  SUMMER SCHOOL ALCCAL 2000\\
"ALGEBRAIC COMBINATORICS AND COMPUTER ALGEBRA"\\
BULGARIA, 2000\\
{\small $http://www.math.bas.bg/\ {\tilde {}}ALCCAL$}}
\author{\bf First Announcement\\}}

\date{}
\maketitle

%\bigskip

\section{Main idea}

\hskip \parindent

We are organizing  a summer school with the above title
in Bulgaria on the coast of Black Sea from September 3 to September 14, 2000.

The duration  of the summer school will be 12 days,
including
8 working days, 2 excursion days and days of arrival and departure.

Sponsorship was not sought for the meeting and so we are unable to give
any financial support to the
participants.
Everything is based on the  enthusiasm of the organisers and our guests.

In a sense the idea of this meeting is similar to the idea of the First
International
Conference
on Algebraic Combinatorics in Vladimir, USSR, August 1991.
We think that the present time  in Bulgaria is
most  appropriate: this country is striving to become a major tourist and
recreational attraction.
Thus we have  been able to find
reasonable prices at a  high level of service.

\section{Scientific community}

\hskip \parindent

Algebraic combinatorics is a field of mathematics which was recognized
"officially" 10-15 years ago. The name itself came from the
Japanese mathematicians E. Bannai \& T. Ito who published a book
with such title in 1984.

Roughly speaking, algebraic combinatorics deals with highly symmetrical
combinatorial objects (graphs, designs, codes etc.). What
"high symmetry" means can be rigorously formulated in terms of the action of
the automorphism group of the object. One of the most beneficial ways
to consider this  is that the requirement of transitivity (primitivity)
of the action of a certain group is substituted by weaker assumption of
combinatorial regularity. For example, parallel consideration and
classification of rank 3 graphs and strongly regular graphs is
one of the areas in algebraic combinatorics. The techniques used in algebraic
combinatorics is in a sense an amalgamation of methods from group theory,
linear algebra, graph theory, number theory and  representation theory.
Extensive use of computers and especially of computer algebra packages
is an essential feature of this area.

There are hundreds of mathematicians working in algebraic
combinatorics as it is defined above. A lot of research deals with
allied areas: design theory, topological graph theory, diagram geometries,
finite fields and its applications, coding theory, applied statistics, etc
and these have a deep
and long-standing dependency  on algebraic combinatorics.

The main target of our summer school will be all theoretical aspects of
algebraic combinatorics. This will be supplemented by
various links with coding theory. Other important components of
interest will be computer algebra systems and in particular use of modern
computer systems (for example GAP, GRAPE, DISCRETA, COCO and others) in
algebraic combinatorics.


\section{Structure of the meeting}

\hskip \parindent

- The period of  the school is September 3 - September 14, 2000.

- Sunday, September 3 will be the day of arrival, 8 working days will start from
Monday, September 4 until Wednesday, September 13,
with an interruption for two excursion days.

Thursday, September 14 will be a day of  departure and/or optional excursions.
The standard package for the participants will be
11 nights from Sunday, September 3 till Thursday, September 14.
 Shorter packages (of at least
for 7 days) will also be available.

- During each of the 8 working days there will be two sessions, each of 3-4
working hours. The main body of the summer school will be covered by 8-12
short courses, each consisting of 2-4 hour lectures. These mini-courses
will be
given by  prominent leading experts in algebraic combinatorics who have
an approved reputation as excellent speakers. Each participant (including
organizers) will be invited to submit a 30-minutes contributed talk. Such
option will be open to everybody who  register  before the deadline.
If necessary, parallel sessions will be organized.

We will also organize a few poster sessions for ad hoc contributions.
Other  suitable ideas for social outings  (besides excursion days) will
also
be considered
which will involve accompanying persons (daily) and all participants
(at  evening time).

The abstracts of all contributed talks will be available at the time of
registration.

At this moment we have the following preliminary arrangements
of the  short courses (those marked by the sign ${ }^{*}$ are
finally confirmed):

- Table algebras and their applications to finite groups (Zvi Arad ${ }^{*}$,
Israel);

- Association Schemes in Statistics (Rosemary A. Bailey, England)

- Graph Embeddings and Galois Groups (Gareth Jones ${ }^{*}$, England);

- Group theoretical methods for constructive enumeration
  in combinatorics (Reinhard Laue ${ }^{*}$, Germany);

- Constructive enumeration of graphs (Brendan McKay, Australia);

- Isomorphisms of Cayley graphs (Mikhail Muzychuk ${ }^{*}$, Israel);

- Cayley Graphs in Theoretical Computer Science
  (Gottfried Tinhofer ${ }^{*}$, Germany);

- Structural approach to association schemes
  (Paul-Hermann Zieschang ${ }^{*}$, Germany);

- Normally regular directed graphs (Leif Jorgensen ${ }^{*}$, Denmark).
 
- Selected topics of coding theory (Anton Betten ${ }^{*}$, Germany). 
      

The final list of short courses will be included
in the second announcement which will be send to everybody
who will reply on this announcement.

\section{Method of organization}

\hskip \parindent

Programme Committee (PC):\\

Dr. Igor Faradjev

Research and Design Manager

Design Technology Group

Synopsys

700 East Middlefield Road

Mountain View, CA 94043

USA

e-mail: iaf@synopsys.com\\

Prof. Ted Hurley

National University of Ireland

Galway, Ireland

e-mail: Ted.Hurley@nuigalway.ie\\


Prof. Dr. A. Kerber

Lehrstuhl II f\"ur Mathematik

Universit\"at Bayreuth

D-95440 Bayreuth

Germany

e-mail: kerber@btm2xh.mat.uni-bayreuth.de, \ kerber@uni-bayreuth.de\\


Prof. Mikhail Klin

Department of Mathematics

Ben-Gurion University of the Negev

P.O.Box 653, Beer-Sheva 84105, Israel

e-mail: klin@cs.bgu.ac.il\\

All inquiries regarding the scientific program should be addressed to M.Klin.\\

\newpage

Local Organization Committee (LC):\\

Prof. Dr. Stefan Dodunekov

Institute of Mathematics and Informatics,

Bulgarian Academy of Sciences

Acad. G. Bonchev Str., Bl. 8

1113 Sofia, Bulgaria

e-mail: stedo@moi.math.bas.bg\\


Associate Prof. Dr. Daniela Nikolova

Institute of Mathematics and Informatics,

Bulgarian Academy of Sciences

Acad. G. Bonchev Str., Bl. 8

1113 Sofia, Bulgaria

e-mail: dani@math.bas.bg\\


Research Associate Margarita Spiridonova

Institute of Mathematics and Informatics,

Bulgarian Academy of Sciences

Acad. G. Bonchev Str., Bl. 8

1113 Sofia, Bulgaria

e-mail: mspirid@math.bas.bg\\


Blajka Radeva

Institute of Mathematics and Informatics,

Bulgarian Academy of Sciences

Acad. G. Bonchev Str., Bl. 8

1113 Sofia, Bulgaria

e-mail: lpmivt@vt.bia-bg.com \\


Note that most part of the work of Programme Committee and Local Committee
will be done in the
framework of
their usual academic duties.

%\newpage

\section{Description of the place and  available facilities}

\hskip \parindent

 The resort St Constantine is the oldest Bulgarian Black sea resort.
   It is located in a beautiful natural park with a wonderful combination
   of sea coast, woods and hot mineral springs. The resort is only 8 km.
   from the town of Varna, and is connected to it by a highway with
   regular bus transport throughout the year.
   Car service facilities, car wash and oil/gas station are available at the
resort.

      In the middle of the resort stands the International House of Scientists
   "F. Joliot-Curie". For over thirty years it has been a gathering point
   for the scientists from countries all over the world offering ideal
   opportunities for summer vacation, congress tourism and balneologic
   therapy. The house  meets all the requirements of a three star hotel. In the
   house  are five multifunctional halls equipped with all modern facilities
 and  meeting all international requirements. The tradition and
   experience in the organization of congresses, symposia and workshops
   have made the house renowned in the international scientific community.
   It has its own beach and a pool of mineral water (free of charge).
   The restaurant
   has a great variety of specialties from the Bulgarian and international
   cuisine, as well as the best Bulgarian wines and spirits. The panorama-
   cafe has a wonderful view of  the sea and the resort itself. The park
   features a cactus' garden unique in Bulgaria.

      The following facilities  and services are available at the balneology
   therapy centre: covered pool with mineral water, fitness hall, sauna,
   manual and water massage, water therapy procedures such as: mineral, herb,
   pearl and cosmetic bath tubs, and also group and individual medical
   exercises, electrical
 therapy, inhalations,
acupuncture.

   Single and double rooms (with showers) as well as a few apartments will be
available
for the participants and their companions.

\section{Payments and deadlines}

\hskip \parindent

   Registration fee: {\$}100 till  June 30, {\$}120 later.

   For students and young researchers: {\$}70 till  June 30, {\$}120 later.

   The registration fee covers: admission to lectures, conference materials,
cocktail, banquet, coffee-breaks, excursions.

   Registration fee for spouses: {\$}50. This  covers the non-academic
activities of the school.

   We suggest that all  participants and accompanying persons take the
whole package, including full board in the hotel.

   Prices of the accommodation and meals (for the whole period) are as
follows:

    \ \  Single room in the hotel + meals \ \   {\$}430

    \ \  A bed in double room + meals  \ \ \ \ \  {\$}350

    \ \  For families there is just a few apartments with a shower,
including two beds of price {\$}20 each, and two pliable beds of half price,
i.e. {\$}10 each.


        For those who  rent an apartment
meals will be available for {\$}12 per day (for one person).\\

    There is no hotel charge  for children under 2 years of age.\\

    Balneological facilities will be available as well
(the price list is available from LC).
The fitness hall will be free of charge for the participants.\\

Payment in advance is preferable.\\

Due to the limited number of apartments they will be booked in order
of the advanced payment of the whole kage.\\

Acceptable methods of payment:

\ \ Bank transfer to BULBANK (see details below);

\ \ Institutional check sent to the address of the Local Committee;

\ \ Payment (in cash) on arrival.\\

\newpage
   Bank details:

\begin{quote}
        Bank name:  \ \ \ BULBANK Ltd.,  Kaloyan Branch\\
        Bank address:   3 Kaloyan Str., Sofia 1000, Bulgaria\\
        SWIFT: BFTBBGSFKAL\\
        Bank Code:  62175395\\
        Bank account:  3100043212\\
        Bank Phone:  (359 2) 868 42 00,
        Fax: (359 2) 980 33 13\\
        Beneficent:  IMI - BAN, For ALCCAL'2000\\
\end{quote}

%\newpage
\section{Registration Form}
\hskip \parindent

The registration form  is available from the web page:

$http://www.math.bas.bg/\ {\tilde {}}ALCCAL$ \\

Please, fill in the information and send the form to the
following e-mail address:

ALCCAL@math.bas.bg

or by fax:   (359 2) 971 36 49   For ALCCAL'2000

or as a hard copy to the following address of the LC:
\begin{quote}
                           ALCCAL'2000 Summer School\\
                           Institute of Mathematics and Informatics,\\
                           Bulgarian Academy of Sciences\\
                           Acad. G. Bonchev Str., Bl. 8\\
                           1113 Sofia, Bulgaria\\
\end{quote}

%\newpage
\section{Abstracts}
\hskip \parindent

Each abstract of a contributed paper should not exceed two pages.
It should be  prepared in LaTeX form and sent to Local Committee before
July 15, 2000.\\

An example of abstract in LaTeX-forme is also given on the
above-mentioned web page.

\section{Important dates}
\hskip \parindent

Early registration for the School:  June 30, 2000 \\

Deadline for submition of the abstracts to the Local Comittee of the School:
July 15, 2000.

\end{document}



