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The Pumplün 70 Festschrift

Our friend and colleague, Dieter Pumplün, celebrated his 70th birthday on December 22, 2002. To honor this special occasion, we collected a number of articles from friends and coworkers in a Festschrift. A hard copy of the Festschrift was presented to Nico on February 6, 2003, during a colloquium held in his honor at FernUniversität Hagen.

Most of the contributions to the Festschrift will be published in mathematical journals; in fact, some have already been published. Below, a list of contributions and contributors can be found, as well as further information and various files for downloading. The information will be periodically updated.

Aloys Krieg & Sebastian Walcher

Contributions to the Festschrift

• Frontispiece and Introduction (pdf)
• Toward a Characterization of Algebraic Exactness. (pdf)
  J. Adámek, Dept. of Theoretical Computer Science, TU Braunschweig, 38023 Braunschweig, Germany - E-Mail: j.adamek@tu-bs.de
  J. Rosický, Dept. of Mathematics, Masaryk University, 66295 Brno, Czech Republic - E-Mail: rosicky@math.muni.cz
• A cancellation law in the category of T₀ spaces.
  B. Banaschewski,
  R. Lowen - E-Mail: rlow@ruca.ua.ac.be
• Merotopological spaces.
  H.L. Bentley, University of Toledo, Toledo, Ohio, USA - E-Mail: lbentley@math.utoledo.edu
  H. Herrlich, Universität Bremen, Bremen, Germany
• On the powers of a Lindelöf space.
  R. Börger, FB Mathematik, FernUniversität-Gesamthochschule Hagen, 58084 Hagen, Germany - E-Mail: Reinhard.Boerger@FernUni-Hagen.de
• Z-Compactness and z-completeness in the setting of affine sets.
  V. Claes, Departement Wiskunde, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium - E-Mail: vclaes@vub.ac.be
  E. Lowen-Colebunders, Departement Wiskunde, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium - E-Mail: evacoleb@vub.ac.be
• Exponentiability in the category of lax algebras. (pdf)
  M.M. Clementino, Dep. de Matemética, Univ. de Coimbra, 3001-454 Coimbra, Portugal - E-Mail: mmc@mat.uc.pt
  D. Hofmann, Dep. de Matemética, Univ. de Aveiro, 3810-193 Aveiro, Portugal - E-Mail: dirk@mat.ua.pt
  W. Tholen, Dep. of Math. and Stat., York University, Toronto, Canada M3J 1P3 - E-Mail: tholen@mathstat.yorku.ca
• A special construction of complete Euler graphs.
  M. Conrad, Fachbereich Mathematik, FernUniversität Hagen, 58084 Hagen, Germany
  A. Duma, Fachbereich Mathematik, FernUniversität Hagen, 58084 Hagen, Germany - E-Mail: mathe.duma@fernuni-hagen.de
• The graded ring of Hermitian modular forms of degree 2 over . (pdf)
  T. Dern, Lehrstuhl A für Mathematik, RWTH Aachen, 52056 Aachen, Germany
  A. Krieg, Lehrstuhl A für Mathematik, RWTH Aachen, 52056 Aachen, Germany - E-Mail: krieg@mathA.rwth-aachen.de
• Problems of "Buffon type" for non convex lattices.
  A. Duma, Fachbereich Mathematik, FernUniversität Hagen, 58084 Hagen, Germany - E-Mail: mathe.duma@fernuni-hagen.de
  M. Stoka, Dipartimento di Matematica, Università di Torino, via Carlo Alberto 10, I-10123 Torino, Italy
• Axioms for convenient calculus.
  A. Frölicher, Section de Mathématiques, Case postale 240, CH 1211 Genève 24, Switzerland
• On Galois connections and applications.
  W. Gähler - E-Mail: gaehler@rz.uni-potsdam.de
• Quantum operations.
  S. Gudder, Dept. of Mathematics, Universitiy of Denver, Denver, Colorado 80208 - E-Mail: sgudder@math.du.edu
• Reduced product objects in model categories. (pdf)
  K.A. Hardie, University of Cape Town, 7700 Rondebosch, South Africa, University of the Western Cape, Pr Bag X17, 7535 Bellville, South Africa - E-Mail: hardieka@iafrica.com
  P.J. Witbooi, University of the Western Cape, Pr Bag X17, 7535 Bellville, South Africa - E-Mail: pwitbooi@uwc.ac.za
• Nicholas Bourbaki und die Axiomatik der Strukturen. Bemerkungen zur Architektur der Mathematik.
  H. Heyer, Mathematisches Institut der Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen, Germany
• The categories of pro-Lie groups and pro-Lie algebras. (pdf)
  K.H. Hofmann, FB Mathematik, Darmstadt University of Technology, Schlossgartenstr. 7, 64289 Darmstadt, Germany - E-Mail: hofmann@mathematik.tu-darmstadt.de
  S.A. Morris, School of Information Technology and Mathematical Sciences, University of Ballarat, P.O.Box 663, Ballarat, Victoria 3353, Australia - E-Mail: s.morris@ballarat.edu.au
• Stability of 1-codimensional analytic decompositions.
  Published in: International Journal of Pure and Applied Mathematics 4 (3) (2003), 339-361
  H. Holmann, Math. Institut der Universität, CH-1700 Freiburg, Switzerland - E-Mail: Harald.Holmann@unifr.ch
  B. Kaup, Math. Institut der Universität, CH-1700 Freiburg, Switzerland - E-Mail: Burchard.Kaup@unifr.ch
  H.-J. Reiffen, FB Mathematik/Informatik, Universität, 49069 Osnabrück, Germany - E-Mail: Reiffen@mathematik.uni-osnabrueck.de
• Productivity numbers in topological and topological linear spaces. (pdf)
  M. Hušek - E-Mail: mhusek@karlin.mff.cuni.cz
• Modules of Witt vectors.
  F. Ischebeck, Fachbereich Mathematik und Informatik, Universität Münster, Einsteinstr. 62, 48149 Münster - E-Mail: ischebe@math.uni-muenster.de
  V. Kokot, Fachbereich Mathematik und Informatik, Universität Münster, Einsteinstr. 62, 48149 Münster
• Compact extensions and contigual supernearness. (pdf)
  D. Leseberg, Dept. of Mathematics and Informatics, Free University of Berlin - E-Mail: d.leseberg@tu-braunschweig.de
• Artin-Hasse exponentials of derivations.
  S. Mattarei, Dipartimento di Matematica, Università degli Studi di Trento, Via Sommarive 14, I-38050 Povo (Trento), Italy - E-Mail: mattarei@science.unitn.it
• Tensor products and forgetful functors of entwined modules. (pdf)
  B. Pareigis, Math. Institut der Universität München, Germany - E-Mail: Pareigis@lmu.de
• A useful counterexample in probability and statistics.
  D. Plachky, Institute of Mathematical Statistics, University of Münster, Einsteinstr. 62, 48149 Münster
• Residually small varieties without rank. (pdf)
  H.-E. Porst, Dept. of Mathematics, University of Bremen, 28359 Bremen, Germany - E-Mail: porst@math.uni-bremen.de
• Continuous DCPOs as complete information systems.
  A. Pultr, Dept. of Applied Mathematics and ITI, MFF, Charles University, CZ 11800 Praha 1, Malostranské Nám. 25 - E-Mail: pultr@kam.ms.mff.cuni.cz
  A. Tozzi, Dipartimento di Matematica Pura ed Applicata, Università degli Studi di L'Aquila, I-67100 L'Aquila, Via Vetoio, Loc. Coppito - E-Mail: tozzi@univaq.it
• Vector bundles over curves of genus one and arbitrary index. (pdf)
  S. Pumplün, Fakultät für Mathematik, Universität Regensburg, 93040 Regensburg, Germany - E-Mail: Susanne.pumpluen@mathematik.uni-regensburg.de
• On N-Summations, II. (pdf)
  H. Röhrl, 9322 La Jolla Farms Rd., La Jolla CA 92037-1125, USA - E-Mail: hrohrl@ucsd.edu
• Prophet inequalities for the general S_n/n problem - some conjectures.
  N. Schmitz, Inst. für Mathematische Statistik, Einsteinstr. 62, 48149 Münster, Germany
• Radicals of polynomial rings.
  S. Tumurbat, Dept. of Algebra, University of Mongolia, P.O. Box 75, Ulaan Baatar 20, Mongolia - E-Mail: tumur@www.com
  R. Wiegandt, A. Rényi Institute of Mathematics, Hungarian Academy of Sciences, P.O. Box 127, H-1364 Budapest, Hungary - E-Mail: wiegandt@renyi.hu
• Local integrating factors.
  Published in: Journal of Lie Theory 13 (2003), 279-289
  S. Walcher, Lehrstuhl A für Mathematik, RWTH Aachen, 52056 Aachen - E-Mail: walcher@mathA.rwth-aachen.de

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