xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx THE INTERNATIONAL SOCIETY OF DYNAMIC GAMES E-LETTER, issue No. 23, 30 September 1996 Edited by Raimo P. Hamalainen and Harri Ehtamo Systems Analysis Laboratory, Helsinki University of Technology ISDG@HUT.FI xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Dear Dynamic Game Theorist, This is the twentythird issue of the Society's electronic newsletter. The basic minimum work principle in editing this e-letter is that the READERS send important notes and information about symposia, conferences and workshops of dynamic games, as well as abstracts of Ph.D. theses, papers and books, which they want to be included in the newsletter. The format is described below. We hope that no retyping will be needed so please follow the instructions and sample shown below carefully. The news should be concise to keep the newsletter readable. Requests for more complete information about any news item should be directed to its contributor. We appreciate any comments and suggestions that you may have on this e-letter. Looking forward to receiving your news contributions. Raimo P. Hamalainen and Harri Ehtamo xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by the Editors Sep 30 MODEL FOR NEWS SUBMISSIONS Maximum line length is 72 characters. Place the text between two lines of x:ses. The first line should state "Contributed by" and followed by the contributor's name, in brackets and the date. Then there should be a title line and the text. This info block should be sent to ISDG at HUT.FI xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by Raimo P. Hamalainen Sep 30 ISDG Joins the Web ISDG now has a home page in the World Wide Web at http://www.hut.fi/HUT/Systems.Analysis/isdg Currently the pages contain a short description of the society, a list of members, and copies of the past issues of ISDG News. Let us know if you have a homepage of your own so we can link you to the ISDG pages. Have a look at the pages of Systems Analysis Laboratory, too: http://www.hut.fi/HUT/Systems Analysis/ xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by Pierre Bernhard July 10 The following article has been published by COCV, a WWW journal to be found at http://www.emath.fr/ A SEPARATION THEOREM FOR EXPECTED VALUE AND FEARED VALUE DISCRETE TIME CONTROL We show how the use of a parallel between the ordinary (+,x) and the (max,+) algebras, Maslov measures that exploit this parallel, and more specifically their specialization to probabilities and the corresponding cost measures of Quadrat, offer a completely parallel treatment of stochastic and minimax control of disturbed nonlinear discrete time systems with partial information. This paper is based upon, and improves, the discrete time part of the earlier paper contributed to the St Jovite syposium of the ISDG, and published as P. Bernhard: Expected Values, Feared Values and Optimal Control, in G-J. Olsder ed.: New Trends in Dynamic Games and Applications, Birkhauser, 1995. This is my last paper published as an INRIA scientist. Starting sept. first I shall be with ESSI, an engineering school of the University of Nice-Sophia Antipolis. My e-mail shall be xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by Gennady Alferov August 1 DIFFERENTIAL PURSUIT GAMES ON THE SPHERE Ph.D. dissertaton by Alexandr M. Kovshov Supervizor: Leon A. Petrosjan Ph.D. dissertation "Parallel pursuit strategies in the games on the sphere" was defended by A. M. Kovshov in 25 june 1996 at the faculty of Applied Mathematics of St.-Petersburg University. This work is devoted to the consideration of pursuit strategies on the sphere. These strategies are the variants of the well-studied "strategy of parallel pursuit" for pursuit games on the plane, that has been defined, investigated and described by L. A. Petrosjan. There are at least two ways to transfer this strategy to the pursuit games on the sphere. Each way produces a new strategy on the sphere and these strategies are not the same. The first strategy conserves the bearing of the pursuer relative to the evader. For example, if at some instant the direction from the evader to the pursuer is a direction to the north then the pursuer will be north of the evader till the end of the game. The second strategy prescribes the pursuer to move along geodesic lines. For example, if the evader moves along a geodesic line all the time then the pursuer moves along another geodesic line toward the intersection of these geodesic lines, such that both players will reach the intersection point simultaneously. The properties of both strategies are investigated. Two games on the sphere are compared with the similar ones on the plane. These are the "life-line" game and the simple-pursuit game without phase restrictions. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by Gennady Alferov August 1 GAME THEORETIC MODEL OF ATMOSPHERE PROTECTION Ph.D. dissertation by Natalja I. Savischenko Supervizor: Leon A. Petrosjan The (N+1)-player game with one player A0 suffering from air pollution and the rest of players indifferent to it is considered. The main result consists construction of a (N+1)-player supergame defined on a time interval [0,T]. The fixed partition of [0,T] to points 0 = Q0 < ... < Qn = T is given. At each time instant Qk the N indifferent players decide between cooperative and noncooperative behavior with A0, and as a result a subset Sk of cooperating players is formed at each stage k of the supergame (under the assumption that once player i decides noncooperation he can't cooperate at next stages of the supergame). Then on the time interval [Qk, Qm), for m=k+1 of the players from S_k the game proceedes as a cooperative differential game, while the players from the remaining set N \ Sk playing Nash strategies. For the cooperation a special time-consistent barganing procedure is proposed. The strategies in supergame are described and the set of Nash equilibria in supergame is found. The thesis generalizes the approach first proposed in a Discussion Paper of L. Petrosjan and G. Zaccour "A Multistage Game of Downstream Pollution". xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Contributed by the Editors Sep 30 Currently the E-LETTER is delivered to 151 members. There are many new addresses in the list. Please, let us know if your (or your friend's) address is not correct. Agrell Per per.agrell@ipe.liu.se Aizenstros Elon e.aizenstros@trl.telstra.com.au Alferov Gennadyi alferov@robot.apmath.spb.su Allen Katherine katiea@vt.edu Altman Eitan altman@martingale.inria.fr Amman Hans M. amman@hasara5 Auber Olivier auber@email.enst.fr Aubin Jean-Pierre jean-pierre.aubin@ens.fr Babu P.G. babu@agni.ernet.in Bardi Martino bardi@pdmat1.unipd.it Basar Tamer tbasar@markov.csl.uiuc.edu Baston Vic vjdb@maths.soton.ac.uk Beard Rodney r.beard@mailbox.uq.oz.au Berkovitz Leonard D. brkld@gauss.math.purdue.edu Bernhard Pierre bernhard@mirsa.inria.fr Birkenes Robert M. birkene@ucs.indiana.edu Brams Steven J. brams@acfcluster.nyu.edu Breitner Michael breitner@math.tu-clausthal.de Breton Michele michele.breton@hec.ca Caravani Paolo caravani@vaxaq.cc.univaq.it Carlson Dean A. dcarlson@math.utoledo.edu Chikrii Arkadii A. chik@d165.icyb.kiev.ua Chistjakov Sergey svch@robot.apmath.spb.su Cole Shawn uzs8ae@ibm.rhrz.uni-bonn.de Crepey Stephane screpey@simbad.inria.fr Cressman R. rcressma@mach1.wlu.ca Dawid Herbert dawid@e119ws1.tuwien.ac.at Deal Ralph M. deal@heyl.kzoo.edu Deissenberg Christophe deic@ensinfo.univ-nantes.fr Deorah Sushil aurotech@giasbm01.vsnl.net.in Dickinson Bradley W. bradley@pucc Eagleson Roy eagleson@uwovax.uwo.ca Ehtamo Harri ehtamo@hut.fi Engwerda Jacob engwerda@kub.nl Falcone Maurizio falcone@sci.uniroma1.it Feichtinger Gustav or@e119ws1.tuwien.ac.at Fershtman Chaim eco12@taunos Filar Jerzy majaf@levels.unisa.edu.au Foster Dean F. foster@hellspark.wharton.upenn.edu Frankowska Helene frankows@nuri.inria.fr Fridman Emilia emilia@eng.tau.ac.il Gaitsgory V. v.gaitsgory@unisa.edu.au Garcia Alfredo alfrgarc@cdcnet.uniandes.edu.co Getz Wayne getz@cavebear.berkeley.edu Ghose Debasish dghose@aero.iisc.ernet.in Grimm Werner grimm@ifr.luftfahrt.uni-stuttgart.de Grigorenko Nikolai n.l.grigorenko@cs.msu.su Guay Martin guaymj@king5-mail.ki.dupont.com Guerrero Carlos cfraire@cima.cred.uadec.mx Hartl Richard F. hartl@e119ws1.tuwien.ac.at Haurie Alain haurie@ibm.unige.ch Haviv Moshe mosheh@sue.econ.su.oz.au Hines Gordon ghines@uoguelph.ca Houba Harold hhouba@econ.vu.nl Hamalainen Raimo P. raimo@hut.fi Jones-Prichard David djp@pacific.net.sg Jorgensen Steffen stj@dou.dk Kaitala Veijo veijo.kaitala@hut.fi Klompstra Margriet B. klompstr@nlr.nl Koizumi Yoshihiro koizumi@ipken.fuchueis.toshiba.co.jp Kort Peter kort@kub.nl Kostreva Michael M. flstgla@clemson.edu Kouzutin Denis V. vfkuz@robot.apmath.lgu.spb.su Kovshov Aleksander kovshov@robot.apmath.spb.su Krawczyk Jacek jacek.krawczyk@vuw.ac.nz Kuzutin Dennis dvkuz@robot.apmath.spb.su Lau Sau-Him sauhim.lau@anu.edu.au Lechner Jan-Peter w_jpl@unibw-hamburg.de Lachner Rainer lachner@math.tu-clausthal.de Legut Jerzy legut@plwrtu11 Leitmann George gleit@hera.berkeley.edu Lewin Joseph josi11@techunix.technion.ac.il Loulou Richard loulou@management.mcgill.ca Luh Peter luh@farside.ese.uconn.edu Maschler Michael maschler@vms.huji.ac.il Malafeyev Oleg oamalaf@robot.apmath.spb.su Mallozzi Lina mallozzi@vm.cised.unina.it Manole Vlad manole@wuecona.wustl.edu Marcotte Patrice marcottp@cmr001 Mazalov Vladimir maze@cinr.chita.su Meerkov S. smm@eecs.umich.edu Mehlmann Alexander alex@e119ws1.tuwien.ac.at Meister Darren B. dmeister@business.carleton.ca Melanson Larry lmelanson@rovers.com Mignanego Fausto migf1@igecuniv.cisi.unige.it Mizukami Koichi mizukami@katana.mis.hiroshima-u.ac.jp Mollgaard Hans Peter moll@ifiiue.fi.cnr.it Morgan Jacqueline morgan@matna2.dma.unina.it Nickerson David dnick@american.edu Nicolas Jean Marie nicolas@ima.enst.fr Nowak Andrzej nowak@im.pwr.wroc.pl Nurmi Hannu hnurmi@kontu.utu.fi Olsder Geert Jan witaols@dutinfh.tudelft.nl Papavassilopoulos Georg yorgos@nyquist.usc.edu Patrone Fioravante patrone@dima.unige.it Parks Robert P. bparks@wuecona.wustl.edu Pau L.F. louis-francois.pau@uab.ericsson.se Pesch Hans Josef pesch@math.tu-clausthal.de Petit Marilu petit@peano.dis.uniroma1.it Petrosjan Leon A. lapetr@robot.apmath.lgu.spb.su Piramuthu Selwyn selwyn@ux1.cso.uiuc.edu Pohl Michael pohl@mathematik.uni-wuerzburg.de Pourtallier Odile pourtali@merlin.inria.fr Radzik Tadeusz radzik@im.pwr.wroc.pl Raghavan T.E.S. u20833@uicvm.bitnet Raivio Tuomas tuomas.raivio@hut.fi Raza Ahmad raza@management.mcgill.ca Rodin Ervin rodin@rodin.wustl.edu Ruckle William H. whrckl@clemson.edu Ruusunen Jukka jukka.ruusunen@hut.fi Rasanen Mika mika.rasanen@hut.fi Ruckle William H. whrckl@clemson.bitnet Sahiner Atilla sahiner@trerun.bitnet Sain Michael K. sain@krizevac.ece.nd.edu Savard Gilles savardg@cmr001 Schoenbauer Franz schoenbauer@eimoni.una.ac.at Schuschny Andres aschu@cea.uba.ar Sennott Linn I. sennott@math.ilstu.edu Shaked U. f21@taunivm.bitnet Shakun Melvin mshakun@rnd.stern.nyu.edu Shevchenko Igor root@math.marine.su Shimkin Nahum shimkin@ee.technion.ac.il Shimomura Koji i00277@sinet.ad.jp Shinar Josef aer4301@technion.technion.ac.il Sieg Gernot gsieg@gwdg.de Soismaa Margareta soismaa@hkkk.fi Soravia Paolo soravia @pdmat1.math.unipd.it Szajowski Krzysztof szajow@im.pwr.wroc.pl Szulanski Fabian H. administ@simul.recom.edu.ar Thill Henry hthill@io.uwinnipeg.ca Thuijsman Frank frank@math.rulimburg.nl Tolwinski Boleslaw btolwins@mines Turetsky Vladimir vladimir.turetsky@usu.ru Vallee Thomas vallee@sc-eco.univ-nantes.fr Verkama Markku markku.verkama@hut.fi Viscolani Bruno viscol@unive.it Wales Jimmy jwales3@ua1vm Wan Henry cae@cornellc Weeren Aric dse.weeren.a@alpha.ufsia.ac.be Well Klaus well@ifr.luftfahrt.uni-stuttgart.de White Chip userllrm@umichum.bitnet Xu Hua xuhua@katana.mis.hiroshima-u.ac.jp Yeung David wkyeung@hkucc Zaccour Georges p076@hec.ca Zakharov Victor V. vvzakh@robot.apmath.spb.su Zadrozny Peter pz01@gte.com Zenkevich Nikolay zenk@apmath.spb.su de Zeeuw Aart adezeeuw@kub.nl Zezza Pierluigi pzezza@facec.cce.unifi.it Zlotkin Gilad gilad@cs.huji.ac.il Zoran Gajic gajic@ramayana.rutgers.edu xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx End of ISDG E-LETTER issue No. 23, 30 September 1996