Further Professional data 
Promotor for (=thesis advisor) 
 M. van de Vel, Sept. 1975; The intersection property: a contribution to almost fixed point theory.
 J.J.F. Ritzen, April 1977, together with Prof. H.C. Bos, Education, income distribution and economic growth.
 F. Kouwenhoven, April 1986, together with J.R. Strooker, Universal operations in the representation theory of groups.
 B. Hanzon, November 1986, Identifiability, recursive identification, and spaces of linear dynamical systems.
 J.F. Kaashoek, November 1988, Modelling onedimensional pattern formation by diffusion.
 D.J. Smit, September 1989, Quantum groups and algebraic geometry in conformal field theory.
 H.J. Imbens, December 1989, Finite dimensional solutions of infinite hierarchies of soliton equations.
 J. Scholma, 19 November 1990, A Lie algebraic study of some integrable systems associated with root systems.
 F. Weinstein, Filtering basis: a tool to compute cohomologies of abstract subalgebras of the Witt algebra, December 1992, Utrecht.
 R. Peeters, February 1994, Identification of linear inputoutput systems and Riemannian metrics.
 Astrid Scholtens, 4 March 1996, together with B Ditters, ptypical curves in noncommutative formal groups.


Editorial positions 
 (Co)managing Editor journal: Nieuw Archief voor Wiskunde, Wiskundig Genootschap (=Dutch Math. Society), 1977 ...
 Comanaging Editor book series Mathematics and Geophysics, Reidel Publ. Co., 1981 ...
 Managing Editor book series: Mathematics and Its Applications, Kluwer Acad. Publ., 1977 ...
 Managing Editor journal: Acta Applicandae Mathematicae, Reidel Publ. Co., 1983 ...
 Comanaging Editor CWI Monographs, CWI Tracts, CWI Syllabi, North Holland Publ. Co./CWI, 1984...
 Managing Editor translation and revision Russian Encyclopedia of Mathematics, 19871994, Kluwer Academic Publishers.
 Managing Editor Handbook of Algebra in 9 volumes, Elsevier Science Publishers; Vol. 1:. 1995.
 Editorial board Trends in Scientific Research, Unesco/Reidel, 1984...
 Comanaging editor (with H. Neunzert, Hj. Wacker, A.B. Taylor), ECMI series on applied mathematics, KAP/Teubner, 1987...).
 Associate editor journal `Chaos, solitons, and fractals', Pergamon, 1991....
 Associate editor journal `Muldidimensional signal processing'


Professional Societies 
 Wiskundig Genootschap (Member council 19741978; 1994...)
 London Math. Soc.
 Amer. Math. Soc.
 SIAM
 MAA
 Japan Math. Soc.
 Soc. Math. de France
 Deutsche Math. Ver.
 New York Acad. of Sciences
 IEEE
 Nederlandse Vereniging voor Natuurkunde
 American Physical Society
 European Physical Society
 IAMP
 European Mathematical Society


Organizational (Mathematical) activities 
 Chairman Organizing Committee 11th Dutch Math. Congress, Rotterdam 1977.
 Director NATOASI `Stochastic Systems: the mathematics of filtering and identification and applications', Les Arcs, June 1980.
 Chairman of the Department of Mathematics, Econometric Institute, Erasmus Univ. Rotterdam, 19721984.
 Chairman Committee on Continuing Education in Mathematics (PAO wiskunde, 1984 ...)
 Search Committee new president Erasmus University Rotterdam 1980/1981.
 Search Committee new secretary Erasmus University Rotterdam 1980/1981. Chairman and Organizer of various special sessions at IEEE CDC and MTNS meetings (CDC: 1986, 1984, 1983, 1982; MTNS 1985).
 Member Program Committee IEEE CDC 1983, MTNS 1983, MTNS 1985.
 Member Steering Committee MTNS 1985...
 Chairman Organizing Committee ESMI (European Symposium on Mathematics in Industry) Amsterdam, October 1985.
 Director NATOASI: Deformation theory of algebras and applications, Il Ciocco, Italy, June 1986.
 Codirector NATOARW Geometries and groups, Noordwijkerhout, March, 1986.
 Chairman Dept. Pure Math. CWI, 1982...
 Member for Holland of the European Math. Soc. database committee, 19851988.
 Member Steering Committee EMC/Euromath.
 Coorganizer, BIBOS IV, Bielefeld, 1927 April, 1986.
 Coorganizer, ECMI II, Oberwolfach, 17 March, 1987.
 Coorganizer, BIBOS VI, Karpacz, Poland, February 1988.
 Member of program committee MTNS 1989.
 Founder ECMI (= European Consortium for Mathematics in Industry): March 1986.
 President ECMI: 1987.
 Council Member ECMI: 1987  ...
 Member Steering Committee EuroMath 1985  1987.
 Member Commissie Samenwerkingsverband FOM/SMC Mathematische Physica, 1989...
 Member program committee UTAM Symp. nonlinear stochastic mechanism, July 1991.
 Member program committee `New trends in system theory', Genoa, July 1990.
 Member program committee European Control Conference 1993.
 Member board Caribbean Mathematical Foundation.
 Member `Benutzerbeirat STN', Karlsruhe.
 Member organizing committee and program committee, MTNS'93.
 Member ERCIM Taskfree support fSU, 1993...
 Chairman Steering committee ERCIMINTAS, 1994...
 Member European Community expert team `Georgian Symposium for development and conversion' (ISTC, Moscow), May 1995.
 Member council WG (Dutch Mathematical Society), 1994  ...
 Chairman WG (Dutch Mathematical Society 1996 ...


Conferences: Invited Main plenary lectures only 
 Triest: Autumn School on Systems, Nov. 1978.
 Rennes: Journees de geometrie algebrique, July 1978.
 Rome: Severi centennial conference, April 1979.
 Bern: Spring Meeting of the Swiss Math. Soc., May 1979.
 Harvard: NATOASI Geometric methods in linear system theory, June 1979.
 Les Arcs: NATOASI `Stochastic Systems', June 1980.
 Puebla, Mex: ICRA III, Aug. 1980.
 Hamburg: Weekend conference on algebraic and geometric methods in systems and control theory, Oct. 1980.
 Rome: Conference on feedback and synthesis of linear and nonlinear control systems, July 1981.
 Dusseldorf: Special colloquium on invariant theory and its applications, November 1981.
 Delft: Congress of the Wiskundig Genootschap, April 1983.
 Amsterdam: Name change day CWI, August 1983.
 Beijing: Beijing Conference on systems and control, May 1984.
 Windsor: Canadian Math. Congress, June 1984.
 Bielefeld: Preliminary meeting BIBOS IV, November 1985.
 Scheveningen: Constitutive meeting LSV Mathematical Physics, June 1986.
 Marseille/Luminy: 8th Int. Congr. Math. Physics, July 1986.
 Trieste: 2nd Workshop on Mathematics in Industry, February 1987.
 Udine: 5 Lectures on linear and nonlinear filtering, CISM, June 1987.
 Karpacz: 24th Winter School in Physics, Januari 1988.
 Eindhoven: Netherlands Mathematical Congress, April 1988 (opening lecture).
 Nagoya: Soliton and Riccati equations, August 1990.
 Amsterdam: Applied algebra, February 1991.
 Hangzhou: Soliton and Riccati equations, June 1991.
 Amsterdam: Mathematical information problem, November 1992.
 Aachen: Soliton and Riccatie equations, December 1992.
 Vilnius: Filtering of nonGaussian processes, May 1992.
 Waterloo: Fields Institute: Symmetry and optimality, January 1993.
 Antwerpen: Hopf algebras and link invariants, May 1994.
 Amsterdam: Nonlinear vs linear mathematics (opening lecture KdV course), April 1995
 Moscow: Pontryagin memorial conference, The LeibnixHopf algebra, its dual and generalizations, Sept. 1998.
 Kaiserslautern: Believing in polynomials. Main lecture symposium in honour of Paul Fuhrmann, Sept. 1997.


Publications For papers etc. cf. list of publications. 
Books: 
 Formal groups and applications, Acad. Press, 1978.
 (with J.C. Willems (eds)) Stochastic systems: the mathematics of filtering and identification and applications, Reidel Publ. Co., 1981.
 (with A.H.G. Rinnooy Kan (eds)) Current developments in the interface: economics, econometrics, mathematics, Reidel Publ. Co., 1982.
 (with R. Jurcovic, J.H.C. Paelinck (eds)) Bifurcation analysis: principles, applications, synthesis, Reidel Publ. Co., 1985.
 (with G. Koch (eds)), Mathematics of biology, Reidel, 1985.
 (with J.W. de Bakker, J.K. Lenstra (eds)), Mathematics and computer science, NorthHolland/CWI, 1986.
 (with J.K. Lenstra, L.G.L.T. Meertens (eds)), Mathematics and computer science II, North Holland/CWI, 1986.
 (with M. Fliess (eds)), Algebraic and geometric methods in nonlinear control theory, Reidel, 1986.
 Encyclopaedia of Mathematics, in 10 volumes, KAP, 19871994; first supplementary volume, 1997.
 (with S. Albeverio, Ph. Blanchard, L. Streit (eds)), Stochastic processes in physics and engineering, Reidel, 1988.
 (with M. Gerstenhaber (eds.)), Deformation theory algebras and structures and applications, KAP, 1988.
 (with R.M.M. Matthey, E.W.C. van Groesen (eds.)), Proceedings of the first European Symposium on Mathematics in Industry, Teubner/KAP, 1988.
 Handbook of Algebra in 9 volumes, Elsevier Science Publishers, 1995...
 (with H.C. Capel, E.M. de Jager), Proceedings KdV'95, KAP, 1995.
 (with L.A. Bokut', Yu.G. Reshetnyak (eds)), Third Siberian School Algebra and Analysis, Amer. Math. Soc., 1995.


Biography 
 Who is who in the world, editions 6 (1987)  18 (1999)
 Who's who in Science and Engineering, 1st7th edition, 19911999
 Dictionary of international biography, 22nd29th edition, 19931999.


Honours 
 Elected member International Academy of Computer Sciences and Systems, 17 May 1994.
