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     		   F I R S T        C I R C U L A R

		       I M A C S - A C A ' 9 8

	      The Fourth International IMACS Conference
		 on Applications of Computer Algebra

(IMACS = International Association for Mathematics and Computers in Simulation)
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August 9-11, 1998, Czech Technical University
Hotel Krystal, Prague, Czech Republic
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Just before ISSAC'98, August 13-15, Rostock, Germany
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Attendees:

     We have already about 140 registered participants.  A preliminary
     list of attendees is available on the conference web page.  Too
     many mistakes are appearing on the registration forms.
     WHEN YOU REGISTER, PLEASE READ THE REGISTRATION FORM CAREFULLY AND ACT
     ACCORDING TO INSTRUCTIONS THERE.


Time table(preliminary):

     We have 18 sessions with about 160 talks

     4-5 parallel tracks

     Conference days:

        Sunday,  August 9,  1998
        Monday,  August 10, 1998
        Tuesday, August 11, 1998

     ======================================================
     Track           A       B       C       D       E
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     Sun             History HEP     ODE     GB
     Morning                 GR
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     Sun             History Quantum Dynam   GB
     Afternoon       Edu                     Approx
     ======================================================
     Mon             Edu     Autodif Control Approx  Geom
     Morning                         Robot
                                     AI
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     Mon             Edu     PSE     AI      Biology  Geom
     Afternoon
     ======================================================
     Tue             Edu     Industr Dynam           Geom
     Morning                 Highper
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     Tue             Edu             Dynam           Geom
     Afternoon               Highper
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     Total talks     39      36      34      26      27

     Joint events:
     =============
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     Sun
     Night    Welcome party 19-21:30
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     Mon
     Evening  ACA business meeting
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List of sessions and abbreviations:

							     Abreviation
  1.Applications of Grobner Bases				GB
  2.Applications to Artificial Intelligence and			AI
    to other Nonstandard Applications
  3.Approximate Algebraic Computation				Aprox
  4.Automatic Differentiation for adjoint codes generation	Autodif
  5.Computation in Algebra and Geometry				Geom
  6.Computer Algebra Applications in Biology,			Biology
    Ecology and Medicine
  7.Computer Algebra Methods in Integration and Symmetry	ODE	
    Analysis of ODEs 							
  8.Control Theory						Control	
  9.Dynamical Systems and Mechanics				Dynam	
  10.Education meets Computer Algebra: A Double Challenge	Edu	
  11.General Relativity						GR	
  12.High Energy Physics					HEP	
  13.High Performance Symbolic Computing			Highper	
  14.History of Computer Algebra Applications			History	
  15.Industrial Applications					Indust	
  16.Problem Solving Environments				PSE	
  17.Quantum Theory						Quantum	
  18.Robotics							Robot	


Speakers:

  1. Please check the time table and in an URGENT case (if you
     will not be in Prague during your session according to the time
     table, or you have talks in a parallel session), contact your
     session organizer.

  2. If you have not registered yet, then either register soon or
     send a note to
        aca98@siduri.fjfi.cvut.cz
     if you plan to register on-site. If you cannot come to
     the meeting, please inform your session organizer.


Party:

     Party is not included in student registration fee. Students and
     spouses who have not paid the party ($20) yet and would like
     to participate and pay it on-site, please send a note to
        aca98@siduri.fjfi.cvut.cz


Hotel:

     For reservation of hotel Krystal the payment MUST arrive to
     Cotopaxi on or before July 15. After July 15 we will NOT do any
     further hotel reservation.  Really.

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How to get to the conference site (hotel Krystal):

   Address:

   Hotel Krystal
   J. Martiho 2/407
   160 41 Prague 6 - Veleslavin
   Tel: 316 27 65

   Current exchange rate is 31.7 Czech crowns (Kc) per $. Exchange
   offices are located at the airport and at the railway stations. When
   exchanging money keep the receipt which you would need for changing
   the remaining Czech crowns back.

   1. from the Prague Airport

   Krystal is quite close to the airport---do not take shuttle to
   the center.

   a. by public transport

   take right exit from the arrival hall; go straight approx. 40 m
   crossing a few taxi lines to the bus stop which is a bit on the right
   with transparent shelter; take bus number 119 from the Airport to the
   stop "Divoka Sarka" (7th or 8th stop - one stop is optional, only
   after a signal to driver) which is close to ending loop of tramway
   tracks; change to tram nr. 20 or 26; exit on the 2-nd stop "Koospol";
   go straight ahead along the tracks 300 m and hotel Krystal is on your
   right (its photo is on the web)

   you have to buy the ticket at the airport before entering bus, either
   in automatic machines (you would need coins) or in a newspaper stand;
   buy a ticket for 12 Kc (valid for 60 min after stamping, in all city
   public transportation means); after entering the bus stamp it in
   yellow stamping machine inside the bus

   cost - 12 Kc, estimated time - 30 min

   b. by taxi

   Agree on price before entering the car! The maximum allowed price in
   Prague is 17 Kc/km. See taxi warning below!

   cost - approx. 260 Kc with airport taxi (Belinda) or approx. 150 Kc
   with AAA, however you need to phone them 1080 and wait them few
   minutes on their meeting place on the right of the arrival hall right
   exit, estimated time - 10 min


   2. from Prague Main (Hlavni) railway station

   a. by public transport

   entrance to the subway (Metro) is just inside the railway station
   hall; take the entrance closer to the outer windows of the big hall;
   take line C (red one) one station to the station "Muzeum"; change to
   subway line A (green one) -- you go directly down from the middle of
   the platform -- in the direction to "Dejvicka"; go to the station
   "Dejvicka"; take the exit by the first carriage of the subway train;
   one floor up take the right of two straight exits to trams; take
   tramway nr. 20 or 26 to the station "Koospol" in the direction "Divoka
   Sarka"; go straight back along the tracks 300 m and hotel Krystal is
   on your right (its photo is on the web)

   you have to buy the ticket at the railway station before entering
   subway, either in automatic machines (you would need coins) or in a
   newspaper stand; buy a ticket for 12 Kc (valid for 60 min after
   stamping, in all city public transportation means); before entering
   the subway area stamp it in yellow stamping machine in the big railway
   station hall

   cost - 12 Kc, estimated time - 30-40 min

   b. by taxi

   Agree on price before entering the car! The maximum allowed price in
   Prague is 17 Kc/km.  See taxi warning below!
   cost - approx. 200 Kc with AAA, however you need to phone them 1080,
   estimated time - 20 min (might depend on traffic jam during working
   days)


   3. from Prague Holesovice railway station

   a. by public transport

   from the raiway station you enter the hall connecting it with subway
   station; turn right and very close is subway entrance; take line C
   (red one) to the station "Muzeum" and continue as described above for
   going from Prague Main railway station; you will pass through the
   subway station "Hlavni nadrazi" which is Prague Main railway station

   you have to buy the ticket at the railway station before entering
   subway, either in automatic machines (you would need coins) or in a
   newspaper stand; buy a ticket for 12 Kc (valid for 60 min after
   stamping, in all city public transportation means); before entering
   the subway area stamp it in yellow stamping machine in the big railway
   station hall

   cost - 12 Kc, estimated time - 35-45 min


   b. by taxi

   Agree on price before entering the car! The maximum allowed price in
   Prague is 17 Kc/km.  See taxi warning below!

   cost - approx. 200 Kc with AAA, estimated time - 20 min (might depend
   on traffic jam during working days)


Taxi WARNING:

   Unfortunatelly Prague taxi drivers are famous for cheating their
   custommers, especially foreigners, by asking higher (sometimes much
   higher) prices. We believe that it is better to warn you. Here are
   few advices:
   1. agree on the price before entering the car
   2. never catch taxi just on the street
   3. we suggest you to use AAA Radiotaxi Tel.: 1080; best is to phone
   them personaly; this has several advantages:
     - everyone at their dispatching on Tel.: 1080 speaks English
     - you might ask the dispatching about the price; even after that
       agree with driver on the price
     - AAA Radiotaxi claim to have no overcost troubles for rides ordered
       through their dispatching
     - you do not pay anything for their car to come
     - their price is 17 Kc/km and 3 Kc/min for waiting; their prices
       from the airport and railway stations to the hotel Krystal are
       above; price for one ride between Krystal and city center
      (Venceslav square) is approx. 220 Kc


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General Chair:

	Richard Liska (liska@siduri.fjfi.cvut.cz)

Program Chairs:

	Victor Edneral (edneral@theory.npi.msu.su),
	Wolfgang Kuchlin (kuechlin@informatik.uni-tuebingen.de)

Organizing Committee:

	Stanly Steinberg (stanly@math.unm.edu),
	Michael Wester (wester@math.unm.edu)

Local Arrangements:

	Jiri Limpouch (limpouch@lilit.fjfi.cvut.cz),
	Milan Sinor(sinor@antu.fjfi.cvut.cz),
        Petr Kapusta (kapusta@dec1.fjfi.cvut.cz),
	Faculty of Nuclear Sciences and Physical Engineering,
	Czech Technical University

More Information:

  For more information see
        http://www-troja.fjfi.cvut.cz/aca98
  or US mirror
        http://math.unm.edu/ACA/1998/index.html
  or send e-mail to
        aca98@siduri.fjfi.cvut.cz
  however PLEASE try to find it on the conference web page first.