Send mail to:    mgnet@cs.yale.edu             for the digests or bakeoff
                  mgnet-requests@cs.yale.edu    for comments or help
 Current editor:  Craig Douglas                 douglas-craig@cs.yale.edu
Anonymous ftp repository:    casper.cs.yale.edu (128.36.12.1)

Today's editor:  Craig Douglas (douglas-craig@cs.yale.edu)

Volume 3, Number 6, Part 1 (July 28, 1993)

Today's topics:

     MGNet Status
     Important Dates
     References to mgnet articles
     Parallel multigrid software wanted
     CM5 multigrid
     References

-------------------------------------------------------

Date: Mon, 28 Jun 1993 10:28:58 -0400
From: douglas-craig ("Craig C. Douglas")
Subject: MGNet Status

The Yale computer science department has been having difficulties over the
past few days staying on the Internet or providing reasonable transfer rates
for ftp.  This is a direct result of the building being closed due to an
unexpected letter bomb exploding here last Thursday morning.  The building
finally re-opened and things will get back to normal shortly.  Please have
patience.

-------------------------------------------------------

Date: Date: Fri, 18 Jun 1993 14:21:62 -0400
From: douglas-craig@cs.yale.edu ("Craig C. Douglas")
Subject: Important Dates

European Multigrid '93 Conference, July 6-9, 1993 in Amsterdam.  Contact either
Piet Hemker (piet@cwi.nl) or Piet Wesseling (witawes@dutinfh.tudelft.nl) for
more information.  Conference details, including the lecture titles and times,
are contained in mgnet/conferences/euromg93.*.

    Editor's Note: See part 2 of the digest.                              
    -------------

-------------------------------------------------------

Date: Mon, 14 Jun 93 21:40:47 +0200
From: Thor Gjesdal 
Subject: References to mgnet articles

hi,

Sort of a followup on your editorial, a simple question that deserves some
enlightenment:

-How should we refer to/cite a paper from mgnet?

that's all for now
bye
        thoR

    Editor's Note: That depends...  If you are referring to a preprint, a
    -------------  research report number maybe associated with the paper,
                   which is the right citation.  If you want to specifically
                   cite MGNet, something like one of the following will work:

    @techreport{CCDouglas_TR_MADPACK2,
      author =      "C. C. Douglas",
      title =       "MADPACK (Version 2) Users' Guide",
      institution=  "IBM Research Division",
      address =     "Yorktown Heights, New York",
      number =      "16169",
      year =        "1990",
      note  =       "The most up to date source code is available through
                     anonymous ftp from casper.cs.yale.edu in the directory
                     mgnet/madpack2.
      }

    @article{CCDouglas_92c,
      author =      "C. C. Douglas",
      title =       "{MGNet}: a multigrid and domain decomposition network",
      journal =     "ACM SIGNUM Newsletter",
      volume =      "27",
      year =        "1992",
      pages =       "2--8"
      }

                   As for the Sixth Copper Mountain Multigrid Conference
                   papers, Duan Melson writes,

I would refer to them as papers from the Proceedings of the 6th Copper
Mountain Conference on Multigrid Methods, to be published as a NASA CP.

                   (I have no idea what a CP is either.)

-------------------------------------------------------

Date: Wed, 2 Jun 93 18:09:46 +0100
From: Bouabdallah Sebti 
Subject: Parallel multigrid software wanted

Hello,

I'm Sebti Bouabdallah, I'm working on Multigrid methods for parabolic
problems, with Prof. Jean Francois Maitre, at the Ecole Centrale de Lyon,
France.

Next September, the researh group of Lyon St-Etienne will receive a parallel
machine from Intel (Paragon), so I'll do a parallel implementation of the
method, but I don't know how to do it?

I would be very grateful, if you send me software package(s) on parallel
implementation of Multigrid methods for parabolic or elliptic problems, and
thank you very much.

                            Best Regards
                             S.BOUABDALLAH

    Editor's Note: A copy for MGNet would be nice, too.
    -------------

-------------------------------------------------------

Date: Thu, 17 Jun 93 10:21:55 EDT
From: dommer462%cpva.span@Sdsc.Edu
Subject: CM5 multigrid

Dear CM-5 users,

We are converting a 3-d multigrid code to the CM-5.  The code is used to solve
Poisson's equation in a mapped coordinate system.  The general form of the
equation is:

  Pxx + Pyy + A Pzz + B Pz + C Pxz + D Pyz = S ,

where P is the potential; A,B,C, and D are spatially varying coefficients; and
S is a source term.  We solve a mixed Dirichlet and Neumann problem and a pure
Neumann problem with a solvability condition.  The code uses a simple V-cycle.

We have used this code to simulate unsteady turbulent free-surface flows with
O(100**3) grid points on a Cray Y-MP.  We are planning to perform larger
simulations on the CM-5 with O(250**3) grid points.  We are interested in
contacting researchers who have implementedd a 3-d multigrid code on the CM-5
that is capable of solving very large problems very efficiently.  Who can we
contact that is working in this area?  If you have example pieces of code that
solve a 3-d Poisson's equation on a regular grid, you would make my day!

Douglas Dommermuth
dommer462%cpva.span@sds.sdsc.edu
(619)546-6911

    Editor's Note: A copy for MGNet would still be appreciated.
    -------------

-------------------------------------------------------

Date: Date: Fri, 18 Jun 1993 12:59:42 -0400
From: douglas-craig@cs.yale.edu ("Craig C. Douglas")
Subject: References

I have been adding some more references to mgnet/bib/mg.bib.  Rather than
overload the electronic networks, I will provide a summary here during the
next 2 issues.  As always, corrections and additions are always welcome.

J. Adams and R. Garcia and B. Gross and J. Hack and D. Haidvogel and
V. Pizzo
Applications of multigrid software in the atmospheric sciences,
Mon. Weather Rev., 120 (1992), pp. 1447-1458

C. R. Anderson
An implementation of the fast multipole method without multipoles,
SIAM J. Sci. Stat. Comput., 13 (1992), pp. 923-947

F. J. D. Almeida and R. M. Morra and R. F. Willis
Heterodyne technique for potential modulation differentiation,
Rev. Sci. Instrum., 62 (1991), pp. 1475-1480

S. J. Arthur and S. A. E. G. Falle
Multigrid methods applied to an explosion at a plane density interface,
Mon. Not. R. Astron. Soc., 251 (1991), pp. 93-104

R. N. Banerjee and M. W. Benson
An approximate inverse based multigrid approach to the biharmonic problem,
Int. J. Comput. Math., 40 (1991), pp. 201-210

T. Barczyk and R. Wit
Inversion of the fermionic matrix and multigrid,
Acta Phys. Pol. B, 22 (1991), pp. 623-629

P. Bastian and G. Horton
Parallelization of robust multigrid methods:  {ILU} factorization and
frequency,
SIAM J. Sci. Stat. Comput., 12 (1991), pp. 1457-1470

R. Battiti and E. Amaldi and C. Koch
Computing optical flow across multiple scales: an adaptive coarse to
fine strategy,
Int. J. Comput. Vis., 6 (1991), pp. 133-145

O. Baysal and K. Fouladi and V. R. Lessard
Multigrid and upwind viscous flow solver on three dimensional
overlapped and embedded grids,
AIAA J., 29 (1991), pp. 903-910

O. Baysal and K. Fouladi and R. W. Leung and J. S. Sheftie
Interference flows past cylinder-fin-sting-cavity assemblies,
J. Aircr., 29 (1992), pp. 194-202

L. Beernaert and D. Roose and R. Struys and H. Deconinck
A multigrid solver for the Euler equations on the i{PSC}/2 parallel
computer,
Appl. Numer. Math., 7 (1991), pp. 379-398

R. Bhogeswara and J. E. Killough
Domain decomposition and multigrid solvers for flow simulation in
porous media on distributed memory parallel processors,
J. Sci. Comput., 7 (1992), pp. 127-162

Z. Bi and K. Wu and C. Wu and J. Litva
A new finite difference time domain algorithm for solving {M}axwell's
equations,
IEEE Microw. Guid. Wave Lett., (1991), pp. 382-384

G. Bohme and L. Rubart and M. Stenger
Vortex breakdown in shear thinning liquids: experiment and numerical
simulation,
J. Non Newton. Fluid Mech., 45 (1992), pp. 1-20

J. X. Bouillard and G. F. Berry
Performance of a multigrid three dimensional magnetohydrodynamic
generator calculation procedure,
Int. J. Heat Mass Transf., 35 (1992), pp. 2219-2232

A. Brandt
Multigrid methods in lattice field computations,
Nucl. Phys. B, Proc. Suppl., 26B (1992), pp. 137-180

A. Brandt and I. Yavneh,
Inadequacy of first-order upwind difference schemes for some recirculating
flows,
J. Comput.  Phys., 93 (1991), pp.  128-143

A. Brandt and I. Yavneh,
On multigrid solution of high-{R}eynolds incompressible entering flws,
J. Comput. Phys., 101 (1992), pp. 151-164

A. Brandt and I. Yavneh,
Accelerating multigrid convergence and high-{R}eynolds recirculating flows,
SIAM J. Sci. Comput., 14 (1993), pp. 607-626

S. C. Brenner
Multigrid algorithm for the lowest-order {R}aviart-{T}homas mixed
triangular finite element method,
SIAM J. Numer. Anal., 29 (1992), pp. 647-678

R. C. Brower and K. Moriarty and C. Rebbi and E. Vicari
Variational multigrid for non Abelian gauge theory,
Nucl. Phys. B, Proc. Suppl., 20 (1991), pp. 89-93

C. Le Carlier de Veslud and G. Maurice and R. Kouitat
Multigrid microsoftware for engineers on a {M}acintosh computer,
Adv. Eng. Softw., 14 (1992), pp. 219-233

M. Chen and R. Temam
Incremental unknowns for solving partial differential equations,
Numer. Math., 59 (1991), pp. 255-271

M. H. Chou
An efficient scheme for unsteady flow past an object with boundary
conformal to a circle,
SIAM J. Sci. Stat. Comput., 13 (1992), pp. 860-873

A. S. Dawood and P. J. Burns
Steady three dimensional convective heat transfer in a porous box via
multigrid,
Numer. Heat Transf. A, Appl., 22 (1992), pp. 167-198

J. E. Dendy and M. P. Ida and J. M. Rutledge
A semicoarsening multigrid algorithm for {SIMD} machines,
SIAM J. Sci. Stat. Comput., 13 (1992), pp. 1460-1469

V. V. Denisenko and S. S. Zamay
Electric field in the equatorial ionosphere,
Planet. Space Sci., 40 (1992), pp. 941-952

A. A. Derkach and V. A. Saenko
Electron distribution by energies in a charge with evaporating hollow
cathode,
Teplofiz Vys. Temp., 29 (1991), pp. 840-846

E. Dick
Second order formulation of a multigrid method for steady {E}uler
equations through defect correction,
J. Comput. Appl. Math., 35 (1991), pp. 159-168

M. Dobrowolski
Mixed finite element method for approximating incompressible
materials,
SIAM J. Numer. Anal., 29 (1992), pp. 365-389

G. Fiorentino and S. Serra
Multigrid methods for {T}oeplitz matrices,
Calcolo, 28 (1991), pp. 283-305

K. Fouladi and O. Baysal
Viscous simulation method for unsteady flows past multicomponent
configurations,
Trans. ASME, J. Fluids Eng., 114 (1992), pp. 161-169

M. Grabenstein and K. Pinn
Acceptance rates in multigrid {M}onte {C}arlo simulations,
Phys. Rev. D, Part. Fields Gravit. Cosmol., 45 (1992), pp. 4372-4375

R. Grauer and T. C. Sideris
Numerical computation of 3{D} incompressible ideal fluids with swirl,
Phys. Rev. Lett., 67 (1991), pp. 3511-3514

W. D. Gropp and D. E. Keyes
Domain decomposition with local mesh refinement,
SIAM J. Sci. Stat. Comput., 13 (1992), pp. 967-993

R. Guo and R. D. Skeel
An algebraic hierarchical basis preconditioner,
Appl. Numer. Math., 9 (1992), pp. 21-32

M. Harmatz and P. G. Lauwers and R. Ben{~A}v and A. Brandt and E. Katznelson
and S. Solomon and K. Wolowesky
Parallel transported multigrid and its application to the {S}chwinger model,
Nucl. Phys. B, Proc. Suppl., 20 (1991), pp. 102-109

M. Hasenbusch and S. Meyer
Multigrid acceleration for asymptotically free theories,
Nucl. Phys. B, Proc. Suppl., 26B (1992), pp. 610-612

M. Hasenbusch and S. Meyer
Testing accelerated algorithms in the lattice {CP$^3$} model,
Phys. Rev. D, Part. Fields Gravit. Cosmol., 45 (1992), pp. 4376-4380

M. Hasenbusch and S. Meyer and G. Mack
Noncritical multigrid {M}onte {C}arlo: {O}(3) non linear sigma model,
Nucl. Phys. B, Proc. Suppl., 20 (1991), pp. 110-113

W. Heinrichs
A spectral multigrid method for the {S}tokes problem in streamfunction
formulation,
J. Comput. Phys., 102 (1992), pp. 310-318

W. Heinrichs
A stabilized multidomain approach for singular perturbation problems,
J. Sci. Comput., 7 (1992), pp. 95-125

J. L. Herring and C. Christopoulos
Multigrid transmission line modelling method for solving electromagnetic
field problems,
Electron. Lett., 27 (1991), pp. 1794-1795

M. Hinatsu and J. H. Ferziger
Numerical computation of unsteady incompressible flow in complex geometry
using a composite multigrid technique,
Int. J. Numer. Methods Fluids, 13 (1991), pp. 971-997

W. Z. Huang
Convergence of algebraic multigrid methods for symmetric positive definite
matrices with weak diagonal dominance,
Appl. Math. Comput., 46 (1991), pp. 145-164

A. Hulsebos and M. L. Laursen and J. Smit
{SU(N)} multigrid {L}andau gauge fixing,
Phys. Lett. B, 291 (1992), pp. 431-436

A. Hulsebos and M. L. Laursen and J. Smit and A. {J.~van~der} Sijs
Multigrid {L}andau gauge fixing,
Nucl. Phys. B, Proc. Suppl., 20 (1991), pp. 98-101

A. Hulsebos and J. Smit and J. C. Vink
Multigrid inversion of lattice fermion operators,
Nucl. Phys. B, B368 (1992), pp. 379-389

A. Hulsebos and J. Smit and J. C. Vink
Multigrid inversion of the staggered fermion matrix,
Nucl. Phys. B, Proc. Suppl., 20(1991), pp. 94-97

T. Hwang and S. Kacou and I. D. Parson
Multigrid algorithms for solving structural mechanics problems on
supercomputers,
Comput. Syst. Eng., 2 (1991), pp. 253-260

    Editor's Note: mgnet/bib/mg.bib has the BibTeX entries.  You, too, can
    -------------  have your published papers in there by just sending me
                   e-mail with the citations in any reasonable format.

------------------------------

End of MGNet Digest
**************************
 Send mail to:    mgnet@cs.yale.edu             for the digests or bakeoff
                  mgnet-requests@cs.yale.edu    for comments or help
 Current editor:  Craig Douglas                 douglas-craig@cs.yale.edu
Anonymous ftp repository:    casper.cs.yale.edu (128.36.12.1)

Today's editor:  Craig Douglas (douglas-craig@cs.yale.edu)

Volume 3, Number 6, Part 2 (July 28, 1993)

Today's topics:

     EMG'93 information and schedule

-------------------------------------------------------

Date: Fri, 25 Jun 1993 13:31:53 GMT
From: P.W.Hemker@cwi.nl
Subject: EMG'93

 Dear Craig,

 Below you find the LaTeX version of the EMG'93 program.
 Further it includes information how to get there, etc.

 It probably is also useful information for the MGNET.

 Hope to see you July 5th.
 Best regards,
 Pieter Hemker.

    Editor's Note: This is also in mgnet/conferences/euromg93-info.tex.                   
    -------------

 ====================================================================

\documentstyle[12pt,a4]{article} 
\raggedbottom
\parindent=8mm 
\frenchspacing

\textheight 19.5cm
\textwidth 12.0cm
\oddsidemargin  -0.0cm
\evensidemargin -0.0cm

\newcommand\tit[1]{\begin{minipage}{12cm} {\em #1 } \end{minipage} }
\newcommand\tot[1]{\begin{minipage}{12cm} {\rm #1 } \end{minipage} }

\renewcommand\title[2]
{
\begin{center}
{\large {\bf #1 }}\\
\vspace{0.8cm}
{\em #2 }
\end{center}
\vspace{6mm}
}


\begin{document}
\begin{titlepage}
 ~
{\bf \Huge
\vfill
\begin{center} \bf \Huge EMG'93 \\
 Fourth European Conference on \\
Multigrid Methods \end{center}
\vfill
July 6 - 9, 1993 \\
Amsterdam
 ~
\huge
\vfill
 ~\\
Organized by CWI
\vfill
\vfill
\Large
 ~\\
}
\end{titlepage}
\newpage
\setcounter{page}{2}
{ \large
\noindent
 ~\\
{\bf Conference Chairmen}\\
Pieter Hemker (CWI and University of Amsterdam)\\
Pieter Wesseling (Delf University of Technology)

\vfill
\noindent
{\bf Organisation}\\
Frans Snijders\\
Simone van der Wolff\\
\\
CWI\\
P.O.Box 4079\\
NL - 1009 AB Amsterdam\\
Telephone +31 - 20 - 592 4189\\
Telefax +31 - 20 -592 4199

\vfill
 ~\\
{\bf Sponsored by:} \\
\large
Akzo NV\\
IBM Nederland NV\\
KNAW\\
University of Amsterdam
 ~
}
\newpage
 ~
\vfill
\begin{center} \bf \Huge  Programme \end{center}
\vfill
 ~
\vfill
 ~
\vfill
 ~
\newpage

\begin{tabbing}
234567890123 \= 123456789012345678909 \= 01234567890 \kill
{\bf Monday, July 5} \\
20:00 - 22:30 \> {\rm Get-together at ``VU Hospitium"} \\
                 \> {\rm (Guesthouse Free University)} \\
             \> {\rm Pre-registration}\\
\\
{\bf Tuesday, July 6} \\
8:30 \> {\rm Registration at ``Oudemanhuispoort"} \\
     \> {\rm (Univ. Amsterdam)} \\
9:30 \> {\rm Welcome}\> Room D 018 \\
9:45 \> {\rm Invited lecture}\> Room D 018 \\
10:30 \> {\rm Coffee}\\
11:00 \> {\rm Invited lectures}\> Room D 018 \\
12:30 \> {\rm Lunch} \\
14:30 \> {\rm Contributed papers}\\
              \> {\rm Parallel session A}\> Room D 018 \\
              \> {\rm Parallel session B}\> Room C 117 \\
15:30 \> {\rm Tea} \\
16:00 - 17:30 \> {\rm Contributed papers}\\
              \> {\rm Parallel session A}\> Room D 018 \\
              \> {\rm Parallel session B}\> Room C 117 \\
\\
{\bf Wednesday, July 7} \\
9:00 \> {\rm Invited lectures}\> Room D 018 \\
10:30 \> {\rm Coffee}\\
11:00 \> {\rm Contributed papers}\\
              \> {\rm  Parallel session A}\> Room D 018 \\
              \> {\rm  Parallel session B}\> Room C 117 \\
12:30 \> {\rm Lunch} \\
14:30 \> {\rm Contributed papers}\\
             \> {\rm  Parallel session A}\> Room D 018 \\
             \> {\rm  Parallel session B}\> Room C 117 \\
15:30 \> {\rm Tea} \\
16:00 \> {\rm Contributed papers}\\
             \> {\rm  Parallel session A}\> Room D 018 \\
             \> {\rm  Parallel session B}\> Room C 117 \\
17:30 \> {\rm Boat trip and dinner}\\
\end{tabbing}

\newpage 

\begin{tabbing}
234567890123 \= 123456789012345678909 \= 01234567890 \kill

{\bf Thursday, July 8} \\
9:00 \> {\rm Invited lectures}\> Room D 018 \\
10:30 \> {\rm Coffee}\\
11:00 \> {\rm Contributed papers}\\
             \> {\rm  Parallel session A}\> Room D 018 \\
             \> {\rm  Parallel session B}\> Room C 117 \\
12:30 \> {\rm Invited lecture}\> Room D 018 \\
13:15 \> {\rm Lunch} \\
\\ \>
{\rm Free afternoon}\\
\\
{\bf Friday, July 9} \\
9:00 \> {\rm Invited lectures}\> Room D 018 \\
10:30 \> {\rm Coffee}\\
11:00 \> {\rm Contributed papers}\\
             \> {\rm  Parallel session A}\> Room D 018 \\
             \> {\rm  Parallel session B}\> Room C 117 \\
13:00 \> {\rm Lunch} \\
14:00 \> {\rm Contributed papers}\\
             \> {\rm  Parallel session A}\> Room D 018 \\
             \> {\rm  Parallel session B}\> Room C 117 \\
15:30  \> {\rm Tea} \\
\\
       \> {\rm End of the Conference} \\
\\
\end{tabbing}

\newpage 

\begin{tabbing}
234567890123 \= 12345678901234567890 \kill
{\bf Tuesday, July 6, Room D 018} \\
8:30 - 9:30 \> {\rm Registration at ``Oudemanhuispoort"} \\
     \> {\rm (Univ. Amsterdam)} \\
9:30 - 9:45 \> {\sc Welcome}\\
9:45 - 10:30 \> {\sc Invited lecture}\\
  \> W. Hackbusch (Univ. Kiel, BRD) \\
  \> \tit{ The frequency decomposition multigrid method} \\
10:30 - 11:00 \> {\sc Coffee}\\
11:00 - 12:30 \> {\sc Invited lectures}\\
              \> \tot{L. Fuchs (KTH, Stockholm, Sweden)} \\
              \>\tit{ Multi-grid methods
                 for calculation of flows in multi-components geometries}\\
              \>\tot{S. Vandewalle (KU Leuven, Belgium) } \\
              \> \tit{ Multicomputer Solution of Parabolic Problems} \\
12:30 -14:30 \> {\sc Lunch} \\
14:30 - 15:30 \> {\sc Contributed papers}\\
\\
              \> {\sc Parallel session A}\\
\>\tot{ E. Katzer (Univ. Kiel, BRD)}  \\
\> \tit{ A subspace decomposition twogrid method for hyperbolic equations}\\
\>\tot{ J. Janssen (KU Leuven, Belgium)}  \\
\> \tit{ Multigrid waveform relaxation with spatial finite element
discretization}\\
\\
15:30 - 16:00 \> {\sc Tea} \\
16:00 - 17:30 \> {\sc Contributed papers}\\
\\
              \> {\sc Parallel session A}\\
\>\tot{ A. Reusken (TU Eindhoven, The Netherlands) } \\
\> \tit{ Multigrid with matrix-dependent transfer operators for
convection-diffusion problems }\\
\>\tot{ R. Stevenson (RU Utrecht, The Netherlands) } \\
\> \tit{ Robustness of multigrid applied to anisotropic boundary value problems on general domains }\\
 \>\tot{ A. van der Ploeg, E.F.F. Botta and F.W. Wubs } \\
\> (RU Groningen, The Netherlands) \\
\> \tit{ Grid-independent convergence based on preconditioning techniques} \\
\\
 \end{tabbing}
 
\newpage 

\begin{tabbing}
234567890123 \= 12345678901234567890 \kill
{\bf Tuesday, July 6, Room C 117} \\
\\
\\
\\
\\
\\
\\
\\
\\
\\
\\
\\
\\
\\
14:30 - 15:30 \> {\sc Contributed papers}\\
              \> {\sc Parallel session B}\\
\>\tot{ E. Dick and K. Riemslagh (Univ. Gent, Belgium) } \\
\> \tit{ Multigrid methods for steady Euler equations based on
multi-stage Jacobi relaxation }\\
\>\tot{ Y. Luh (GMD, Bonn, BRD) } \\
\> \tit{A study on narrow stencil discretizations and multigrid solvers
for the generalized Stokes equations }\\
\\
15:30 - 16:00 \> {\sc Tea} \\
16:00 - 17:30 \> {\sc Contributed papers}\\
\\
              \> {\sc Parallel session B}\\
\>\tot{ Zhu  Z.W., C. Lacor and Ch. Hirsch (Vrije Univ. Brussel, Belgium)} \\
\> \tit{ A new residual smoothing method for multigrid acceleration applied to the Navier-Stokes equations }\\
\>\tot{ L.A. Catalano, P. de Palma, M. Napolitano and G. Pascazio (Polytec. Bari, Italy) } \\
\> \tit{ A multidimensional solution adaptive multigrid solver
for inviscid cascades } \\
\>\tot{ B. Koobus, G. Carre, M.-H. Lallemand and A. Dervieux } \\
\> (INRIA, Sophia Antipolis, France) \\
\> \tit{ Agglomeration unstructured multigrid for diffusion problems }\\
\\
 \end{tabbing}
 
 \newpage
 \begin{tabbing}
 234567890123 \= 12345678901234567890 \kill
{\bf Wednesday, July 7, Room D 018} \\
9:00 - 10:30 \> {\sc Invited lectures}\\
\>\tot{ A. Brandt (Weizmann Inst., Rehovot, Israel)} \\
      \> \tit{ Multiscale Computations in Physics and Chemistry}\\
\>\tot{ C. Venner (UT, Enschede, The Netherlands) } \\
     \> \tit{ Multilevel solution of Integral and Integro-differential problems} \\
10:30 - 11:00 \> {\sc Coffee}\\
11:00 - 12:30 \> {\sc Contributed papers}\\
              \> {\sc  Parallel session A}\\
 \>\tot{ N.G. Wright and P.A. Sleigh (Univ. London and Leeds, GB) } \\
\> \tit{ Different approaches to discretization
within a multilevel algorithm }\\
 \>\tot{ B. Gustafsson and P. L\"otstedt (Uppsala Univ. and SAAB, Sweden) } \\
\> \tit{ Solution of the stationary Euler equations by an improved GMRES algorithm and multigrid acceleration }\\
 \>\tot{ W. Heinrichs (Univ. Dusseldorf, BRD) } \\
\> \tit{ Spectral multigrid methods for the reformulated Stokes equations }\\
\\
12:30 -14:30 \> {\sc Lunch} \\
14:30 -15:30 \> {\sc Contributed papers}\\
             \> {\sc  Parallel session A}\\
 \>\tot{ P. Johansson and L. Davidson (TU Gothenburg, Sweden) } \\
\> \tit{ A full multigrid method applied to turbulent flow using
the SIMPLEC algorithm together with a collocated grid arrangement} \\
 \>\tot{ H. Kuerten and B. Geurts (UT, Enschede, The Netherlands) } \\
\> \tit{ A multigrid multiblock solver for compressible turbulent flow}\\
\\
15:30 - 16:00 \> {\sc Tea} \\
16:00 -17:30 \> {\sc Contributed papers}\\
             \> {\sc  Parallel session A}\\
 \>\tot{ Ch. Kloppmann, D. Schwamborn and J.P. Singh (DLR, G\"ottingen) } \\
\> \tit{ Multigrid solution of the 2D Navier-Stokes equations for transonic internal and external flows }\\
 \>\tot{ K. de Cock (NLR, Amsterdam, The Netherlands) } \\
\> \tit{ Multigrid acceleration of the 2D Euler equations applied to high lift systems }\\
 \>\tot{ M.G. Edwards and C. Rogers (BP Research, GB) } \\
\> \tit{ Renormalisation and Multigrid for reservoir simulation} \\
\\
\end{tabbing}
 \newpage
 \begin{tabbing}
 234567890123 \= 12345678901234567890 \kill
{\bf Wednesday, July 7, Room C 117} \\
\\
\\
\\
\\
\\
11:00 - 12:30 \> {\sc Contributed papers}\\
\\
              \> {\sc  Parallel session B}\\
 \>\tot{ J. de Keyser and  D. Roose (KU Leuven, Belgium) } \\
\> \tit{ Parallel steady Euler calculations using multigrid methods
and adaptive irregular meshes }\\
 \>\tot{ A. Brandt, V. Mikulinsky and E. Chaimson (Rehovot, Israel) } \\
\> \tit{ Multigrid parallelization of parabolic equations }\\
 \>\tot{ J.E. Dendy, Jr. (Los Alamos, USA) } \\
\> \tit{ Multigrid methods for SIMD machines }\\
\\
12:30 -14:30 \> {\sc Lunch} \\
14:30 -15:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session B}\\
\>\tot{ M. Lemke, K. Witsch and D. Quinlan } \\
\> (Univ.~D\"usselforf and Univ.~Colorado, USA) \\
\> \tit{Parallel multilevel methods with adaptive mesh refinement -
Results for singular perturbation problems} \\
\>\tot{ L.R. Matheson and R.E. Tarjan (Princeton Univ., USA) }\\
\> \tit{ A critical analysis of concurrent and standard
multigrid methods on massively parallel computers} \\

15:30 - 16:00 \> {\sc Tea} \\
16:00 -17:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session B}\\
 \>\tot{ Z. Haras and  S. Ta'asan (NASA Langley, USA) }\\
\> \tit{ LDS Method for linear evolution equations }\\
 \>\tot{ A. Borzi  (SISSA, Trieste, Italy) }\\
\> \tit{ Burgers equation and multigrid techniques} \\
 \>\tot{ J. Fuhrmann (IAAS, Berlin, BRD) }\\
\> \tit{ On matrix data structures and the stability of multigrid algorithms} \\
\end{tabbing}

 \newpage
\begin{tabbing}
234567890123 \= 12345678901234567890 \kill
{\bf Thursday, July 8, Room D 018} \\
\\
9:00 - 10:30 \> {\sc Invited lectures}\\
\>\tot{ G. Wittum (Univ. Heidelberg, BRD) }\\
      \> \tit{ On Robust Multi-grid Methods} \\
\>\tot{  K. St\"uben (GMD, Sankt Augustin, BRD) }\\
      \> \tit{ Adaptive multigrid on distributed memory computers} \\
\\
10:30 - 11:00 \> {\sc Coffee}\\
11:00 - 12:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session A}\\
 \>\tot{ M. Griebel (TU M\"unchen, BRD) }\\
\> \tit{ Parallel point-oriented multilevel methods} \\
 \>\tot{ U. R\"ude (TU M\"unchen, BRD) }\\
\> \tit{ Multilevel, extrapolation and sparse grid methods } \\
 %%  \>\tot{ Xu Changfa (Huazhong Univ., Wuhan, China) }\\
%%  \> \tit{ B-wavelet MG-methods  {\bf or} }\\
 \>\tot{ He Jun and Kang Li-shan (Univ. Wuhan, China) }\\
\> \tit{ Parallel multigrid method based on wavelet multiresolution} \\
\\
12:30 - 13:15 \> {\sc Invited lecture}\\
\>\tot{  P. Lauwers (Univ. Bonn, BRD) }\\
\>    \tit{ Multigrid algorithms in lattice gauge theories}\\
\\
13:15 -14:30 \> {\sc Lunch} \\
\\
{\sc Free afternoon}
 \end{tabbing}
 
 \newpage
\begin{tabbing}
234567890123 \= 12345678901234567890 \kill
{\bf Thursday, July 8, Room C 117} \\
\\
\\
\\
\\
\\
\\
\\
\\
11:00 - 12:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session B}\\
 \>\tot{ O. Dorok, F. Schieweck and L. Tobiska (TU Magdeburg, BRD) }\\
\> \tit{ A Multigrid method for solving the Bousinesq approximation of the
 Navier-Stokes Equations} \\
 \>\tot{ C.W. Oosterlee and P. Wesseling (TU Delft, The Netherlands) }\\
\> \tit{ A multigrid waveform relaxation method for time-dependent
 incompressible Navier-Stokes equations} \\
 \>\tot{ H.T.M. van der Maarel (CWI, Amsterdam, The Netherlands) }\\
\> \tit{ A-posteriori estimation of the local discretisation error
for conservation laws and adaptive local grid refinement} \\
 \end{tabbing}
 
 \newpage
 \begin{tabbing}
 234567890123 \= 12345678901234567890 \kill
{\bf Friday, July 9, Room D 018} \\
9:00 - 10:30 \> {\sc Invited lectures}\\
\>\tot{ D. Braess (Univ. Bochum, BRD) }\\
             \> \tit{ Multigrid methods for nonconforming finite elements}\\
\>\tot{  C. Douglas (Yale Univ., New Haven, USA)}\\
              \> \tit{ A generalized multigrid theory}\\
10:30 - 11:00 \> {\sc Coffee}\\
11:00 - 13:00 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session A}\\
 \>\tot{ S. Ta'asan (NASA Langley, USA) }\\
\> \tit{ Optimal multigrid solvers for steady state inviscid flow problems }\\
\>\tot{ L. Giraud and R.S. Tuminaro (CERFACS, Toulouse, France) }\\
\> \tit{ A domain decomposition algorithm for drift-diffusion equations }\\
 \>\tot{ S. Turek (Univ. Heidelberg, BRD) }\\
\> \tit{ Multigrid techniques for a class of discretely divergence-free finite element spaces} \\
 \>\tot{ Yunqing Huang and Yaoxing Li (Xiangtan Univ., China) }\\
\> \tit{ The convergence of multigrid methods for solving finite element equations in the presence of singularities }\\
\\
13:00 -14:00 \> {\sc Lunch} \\
14:00 - 15:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session A}\\
 \>\tot{ R.H.W. Hoppe (TU M\"unchen, BRD) }\\
\> \tit{ Adaptive multilevel finite element methods for variational inequalities }\\
 \>\tot{ T. Neunhoeffer (TU M\"unchen, BRD) }\\
\> \tit{ Multigrid methods for mixed finite element discretizations of variational inequalities }\\
 \>\tot{ G. Golubovici and  C. Popa (Univ. Constanta, Roumania) }\\
\> \tit{ Interpolation and related coarsening techniques for the algebraic multigrid method }\\
\\
15:30  \> {\sc Tea} \\
       \> {\sc End of the Conference} \\
\\
\end{tabbing}

 \newpage
 \begin{tabbing}
 234567890123 \= 12345678901234567890 \kill
{\bf Friday, July 9, Room C 117} \\
\\
\\
\\
\\
\\
\\
11:00 - 13:00 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session B}\\
 \>\tot{ K. Riemslagh and E. Dick (Univ. Gent, Belgium) }\\
\> \tit{ Implementation aspects of the multigrid formulation of flux-difference
splitting algorithms for steady Euler equations on unstructured adaptive grids }\\
 \>\tot{ P. Ekstrand and L. Fuchs (KTH Stockholm, Sweden) }\\
\> \tit{ A pressure correction method for compressible viscous flow for both low and high Mach numbers }\\
\>\tot{ Z.P. Novak and M. Salcudean (Univ. B.C., Vancouver, Canada) }\\
\> \tit{ Fluid flow calculations by a nonlinear multigrid method }\\
\>\tot{ X.S. Bai and L. Fuchs (KTH, Stockholm, Sweden) }\\
\> \tit{A multigrid method applied to calculation of turbulent
reacting flows in furnaces} \\
\\
13:00 -14:00 \> {\sc Lunch} \\
14:00 - 15:30 \> {\sc Contributed papers}\\
\\
             \> {\sc  Parallel session B}\\
 % \>\tot{ Tom Fogwell (IT Corp Martinez ) {\bf or} }\\
% \> \tit{ A multigrid method for multiphase fluid flow in porous media} \\
 \>\tot{ Costiner and Ta'asan (Weizmann Inst., Rehovot, Israel) }\\
\> \tit{ Separation techniques for multilevel eigenvalue solvers applied to a non-linear Schroedinger eigenvalue problem }\\
 \>\tot{ C. Srinivasa (NAL, Bangalore, India) }\\
\> \tit{ Solution of full potential equation on an airfoil by multigrid technique }\\
 \>\tot{ A.I. Zhmakin (Acad.Sci, Petersburg, Russia)  }\\
\> \tit{ A multigrid method for low Mach-number compressible Navier-Stokes equations on 2D unstructured grids }\\
\\
\end{tabbing}

\newpage
\section*{General information}

\subsection*{Conference Location: Oudemanhuispoort \\ (University of Amsterdam)}
All sessions will be held in the buildings of the University of Amsterdam
at the Oudemanhuispoort (address: next to Oudezijds Achterburgwal 229). 
These buildings are located in the old city center.
Plenary sessions will be held in room D018, while parallel sessions are held 
in room D018 and room C117.
Lunches will be served in the university restaurant ``Atrium", adjacent to 
the Oudemanhuispoort.
The location of the Oudemanhuispoort and Atrium within Amsterdam's city 
center is indicated on an enclosed leaflet.

\subsection*{Maps}
The EMG'93 information package contains two maps. There's a map enclosed 
that shows all public transport routes, and there's a leaflet, displaying 
the location of the Oudemanhuispoort buildings.

\subsection*{The VU Hospitium \\ (Guesthouse of the Free University)}
Most participants will be accommodated at the VU hospitium (address: Laan 
van Kronenburg 9). The VU Hospitium is located approx. 6 km's south of the 
city center and can easily be reached by tram or metro, line 5 or 51.
On Monday evening June 5th, an informal get-together will be held in the VU-
Hospitium. A convenient way to get there from the city center (e.g. central 
station) is as follows: {\em
                Use metro-stop ``Uilenstede" (metro 51-direction 
                Amstelveen/ Middenhoven). From the stop: go East, using the
                footpath, walk over a bridge, keep a block of flats on your
                right hand side and walk till you reach the Hospitium at 9, 
                Laan van Kronenburg.} For the convenience of EMG delegates 
                some signposts will be placed between the tramstop and the
                Hospitium. 

\subsection*{Pre-registration}
Registration for EMG'93 starts on Monday at the ``VU Hospitium", Laan van 
Kronenburg 9, Amstelveen. A registration desk will be open from 20.00  until 
23.00. The bar in the VU Hospitium will be open from 20.00 till 24.00.
During conference days, the registration desk will be open from 8.30 to 
17.30 at the Oudemanhuispoort.

\subsection*{Social Events}
Social events start with the informal get-together on Monday, July 5th at 
the VU Guesthouse (``Hospitium") between 20.00 and 23.00. Directions how to 
get there: see above.
The conference dinner will be held on Wednesday, July 7th. Delegates will be 
transported to the dinner site by canalboat, immediately after Tuesday's last 
session.

\subsection*{Money}
The national currency unit is the Dutch guilder (Dutch: gulden), 
abbreviated: HFL, DFL or NLG. Coins are circulating in units of 0.05, 0.10, 
0.25, 1.00, 2.50 and 5.00, Banknotes in units of 10.00, 25.00, 50.00, 
100.00, 250.00 and 1,000.00. The coin of 0.01 is not in circulation any more 
though it is still used as a unit for prices. Cash transactions are always 
rounded to the nearest multiple of 0.05.
Exchanging foreign currency can be done at banks, which are normally open 
from 09.00 to 16.00 on working days. There are numerous small exchange 
booths (with names like ``checkpoint") where you are offered a nice exchange 
rate, but commissions are rather high.

\subsection*{Public Transport and the ``Strippenkaart"}
The ticket for the use of all local public transportation is called 
``Strippenkaart". The number of ``strips" required for a trip by public 
transportation depends on the distance to be travelled. The city of 
Amsterdam, and in fact all of the Netherlands, is divided into zones. If you 
travel through $n$ zones, you must validate $n$+1 strips.
The validation must be 
made when you enter a bus or tram by having it stamped by the driver or by a 
machine. Within Amsterdam the strippenkaart can also be used in metro and 
railways. There are machines at all stations for validating the 
strippenkaart.
A strippenkaart may be bought at railway stations, at post offices, on buses 
and trams from the driver, and at certain tobacco shops. When bought from a 
driver the price is higher than otherwise.

\subsection*{Travel between VU Hospitium and Oudemanhuispoort}
Because car traffic is not advised in the city center, the best connection 
between VU Hospitium and Oudemanhuispoort is by public transportation. There 
is a direct metro (partly subway), line 51, from stop ``Uilenstede" to 
Waterlooplein/City Hall (close to Oudemanhuispoort).
The distance corresponds with 2 zones: 3 strips have to be validated.

\subsection*{Safety Precautions}
A few safety precautions may prevent unpleasant surprises. Keep close 
control of your wallet, briefcase and suitcase at all times. Don't leave 
valuables in a car parked on the streets of Amsterdam.
In general the streets of Amsterdam are safe but it is advised to avoid the 
area between Damrak and Nieuwmarkt (the red light district). This area is 
definitely less safe than the rest of the inner city of Amsterdam.

\subsection*{Parking}
In general it's advisable to leave your car at your hotel and use public 
transportation facilities. Parking near the Oudemanhuispoort can best be 
done in the parkinggarage on Waterlooplein (costs about 35 NLG per day).

\end{document}

------------------------------

End of MGNet Digest
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