tr-b-00-02.ps.gz Peter Brass On the Monoexistence of Hausdorff-like Metrics for Fuzzy Sets Report B 00-02, Berlin, January 2000 tr-b-00-04.ps.gz Marek Lassak On-line Algorithms for q-adic Covering of the Unit Interval and forCovering a Cube by Cubes Report B 00-04, Berlin, February 2000 tr-b-00-06.ps.gz Peter Brass Triangles in Extremal Area or Perimeter in a Finite Planar Point Set Report B 00-06, Berlin, March 2000 tr-b-00-07.ps.gz Christian Maurer Lerninhalte und -ziele im Informatikunterricht der gymnasialen Oberstufe Report B 00-07, Berlin, Maerz 2000 tr-b-00-08.ps.gz Marek Lassak Relationships between Widths of a Convex Body and of an Inscribed Parallelotope Report B 00-08, Berlin, April 2000 tr-b-00-09.ps.gz Christian Maurer Universal Synchronization Objects Report B 00-09, Berlin, April 2000 tr-b-00-10.ps.gz Vikas Kapoor A Generic Design Concept for Geometric Algorithms Report B 00-10, Berlin, June 2000 tr-b-00-11.ps.gz Frank Hoffmann Bypass Strong V-Structures and Find an Isomorphic Labelled Subgraph in Linear Time Report B-00-11, Berlin, July 2000 tr-b-00-13.ps.gz Peter Brass Title: Fast enumeration of point-hyperplane incidences Report B 00-13, Berlin, August 2000 tr-b-00-15.ps.gz Stefan Felsner Convex drawings of Planar Graphs and the Order Dimension of 3-Polytopes Report B-00-15, Berlin, 2000 tr-b-00-16.ps.gz Stefan Felsner Hamiltonicity and Colorings of Arrangement Graphs Report B-00-16, Berlin, 2000 tr-b-00-18.ps.gz Helmut Alt Stefan Felsner Ludmilla Scharf Storage Area Network Optimization Report B-00-18, Berlin, November 2000 tr-b-00-19.ps.gz Laura Heinrich-Litan Monotone Subsequences in Rd Report B-00-19, Berlin, December 2000 tr-b-00-20.ps.gz Peter Brass Problems On Approximation By Triangles Report B-00-20, Berlin, December 2000 tr-b-00-21.ps.gz Peter Brass On Finding Maximum-Cardinality Symmetric Report B-00-21, Berlin, December 2000 tr-b-01-01.ps.gz Stefan Felsner Infeasibility of Systemns of Halfspaces , Berlin, email: felsner@inf.fu-berlin.de tr-b-01-02.ps.gz Torsten Schlieder ApproXQL: Design and Implementation of an Approximate Pattern Matching Language for XML , Berlin, email: schlied@inf.fu-berlin.de tr-b-01-03.ps.gz Report B 01-03 Efficient Multi-Profile Filtering using Finite Automata Report B 01-03, Berlin, March 2001 tr-b-01-08.ps.gz Frank Hoffmann, Covering with Ellipses , Berlin, email: name@inf.fu-berlin.de tr-b-02-02.ps.gz Robert Connelly Straightening Polygonal Arcs and Convexifying Polygonal Cycles , Berlin, email: rote@inf.fu-berlin.de tr-b-02-05.ps.gz Dirk Draheim, Gerald Weber Strongly Complex Typed, Dialogue-Oriented Server Pages , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-02-06.ps.gz Dirk Draheim, Gerald Weber An Introduction to Form Storyboarding , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-02-07.ps.gz Dirk Draheim, Gerald Weber An Overview of State-of-the-Art Architectures for Active Web Sites , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-02-08.ps.gz Dirk Draheim, Gerald Weber Form Charts and Dialogue Constraints , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-02-09.ps.gz Dirk Draheim, Gerald Weber UML State History Diagram Semantics of Form Charts , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-02-11.ps.gz Dirk Draheim, Elfriede Fehr, Gerald Weber The Definition of the NSP Type System , Berlin, email: draheim@inf.fu-berlin.de, weber@inf.fu-berlin.de tr-b-03-07.ps.gz Dirk Draheim, Lukasz Pekacki Analytical Processing of Version Control Data: Towards a Process-Centric Viewpoint , Berlin, email: draheim@inf.fu-berlin.de, pekacki@inf.fu-berlin.de tr-b-03-08.ps.gz Robert Tolksdorf, Franziska Liebsch, Duc Minh Nguyen XMLSpaces.NET: An Extensible Tuplespace as XML-Middleware , Berlin, email: tolk@inf.fu-berlin.de, fliebsch@inf.fu-berlin.de, nguyen@inf.fu-berlin.de tr-b-03-XX.ps.gz Dirk Draheim, Lukasz Pekacki Analytical Processing of Version Control Data: Towards a Process-Centric Viewpoint , Berlin, email: draheim@inf.fu-berlin.de, pekacki@inf.fu-berlin.de tr-b-04-01.ps.gz Matthias Horn A Framework for Multi-Tier Type Evolution and Data Migration , Berlin, email: mch@condat.de tr-b-04-02.ps.gz Gerald Weber An Analytical Comparison of Generative Programming Technologies , Berlin, email: weber@cs.auckland.ac.nz tr-b-91-06.ps.gz Emo Welzl (joint work with Jiri Matousek, Lorenz Wernisch) Discrepancy and $\epsilon$-Approximations for Bounded VC-Dimensions Report B 91-06, Berlin, April 1991 tr-b-91-11.ps.gz Emo Welzl (joint work with Kurt Mehlhorn, Micha Sharir) Tail Estimates for the Space Complexity of Randomized Incremental Algorithms Report B 91-11, Berlin, August 1991 tr-b-92-01.ps.gz Pavel Valtr On the minimum number of empty polygons in planar point sets Report B 92-01, Berlin, January 1992 tr-b-92-02.ps.gz Emo Welzl On Spanning Trees with Low Crossing Numbers Report B 92-02, Berlin, January 1992 tr-b-92-04.ps.gz Michael Formann On Spanning Trees with Low Crossing Number Report B 92-04, Berlin, February 92 tr-b-92-06.ps.gz Jiri Matousek On Vertical Ray Shooting in Arrangements Report B 92-06, Berlin, February 1992 tr-b-92-07.ps.gz Frank Wagner (joint work with Majid Sarrafzadeh, Dorothea Wagner) Wiring Knock-Knee Layouts -- A Global Approach Report B 92-07, Berlin, March 92 tr-b-92-09.ps.gz Franz Aurenhammer (joint work with Boris Aronov, Friedrich Hoffmann) Minkowski-Type Theorems and Least-Squares Partitioning Report B 92-09, Berlin, April 92 tr-b-92-10.ps.gz Kurt Mehlhorn (joint work with Hanna Baumgarten, Hermann Jung) Dynamic Point Location in General Subdivisions Report B 92-10, Berlin, March 92 tr-b-92-11.ps.gz Pavel Valtr Unit Squares Intersecting all Secants of a Square Report B 92-11, Berlin, May 92 tr-b-92-13.ps.gz Emo Welzl (joint work with Jiri Matousek, Janos Pach, Micha Sharir, Shmuel Sifrony) Fat Triangles Determine Linearly Many Holes Report B 92-13, Berlin, June 92 tr-b-92-15.ps.gz Jiri Matousek Lower Bounds for a Subexponential OptimizationAlgorithm Report B 92-15, Berlin, July 92 tr-b-92-17.ps.gz Emo Welzl (joint work with Jiri Matousek, Micha Sharir) A Subexponential Bound for Linear Programming Report B 92-17, Berlin, August 92 tr-b-92-18.ps.gz Jiri Matousek (joint work with Bernard Chazelle) On Linear-time Deterministic Algorithms for Optimization Problems in Fixed Dimension Report B 92-18, Berlin, September 92 tr-b-92-20.ps.gz Jiri Matousek (joint work with Chi-Yuan Lo, William Steiger) Algorithms for Ham-Sandwich Cuts Report B 92-20, Berlin, September 92 tr-b-92-22.ps.gz Frank Wagner (joint work with Edmund Ihler, Dorothea Wagner) Modeling Hypergraphs by Graphs with the same Mincut Properties Report B 92-22, Berlin, August 92 tr-b-92-27.ps.gz Lorenz Wernisch (joint work with Stefan Felsner) Maximum $k$-Chains in Planar Point Sets: Combinatorial Structure and Algorithms Report B 92-27, Berlin, December 1992 tr-b-93-01.ps.gz Pavel Valtr Ramsey-Remainder Report B 93-01, Berlin, February 93 tr-b-93-05.ps.gz Bernd Gaertner A Subexponential Algorithm for Abstract Optimization Problems Report B 93-05, Berlin, May 93 tr-b-93-07.ps.gz Bernd Gaertner, Emo Welzl Vapnik-Chervonenkis Dimension and (Pseudo-)Hyperplane Arrangements Report B 93-07, Berlin, June 93 tr-b-93-08.ps.gz Frank Hoffmann Graph Coloring Result and Its Consequences For Polygon Guarding Problems Report B 93-08, Berlin, June 1993 tr-b-93-09.ps.gz Jiri Matousek Geometric Range Searching Report B 93-09, Berlin, July 93 tr-b-93-10.ps.gz Helmut Alt, Bernd Behrends, Johannes Bloemer Approximate Matching of Polygonal Shapes Report B 93-10, Berlin, July 93 tr-b-93-13.ps.gz Johannes Bloemer Computing Sums of Radicals in Polynomial Time Report B 93-13, Berlin, August 93 tr-b-93-14.ps.gz Johannes Bloemer On Kummer Theory and the Number of Roots of Unity in Radical Extensions of Q Report B 93-14, Berlin, August 93 tr-b-93-16.ps.gz Helmut Alt, Lars Knipping, Gerald Weber An Application of Point Pattern Matching inAstronautics Report B 93-16, Berlin, November 93 tr-b-93-17.ps.gz Frank Hoffmann, Klaus Kriegel (joint work with Ervin Gyoeri, Tom Shermer) Generalized Guarding and Partitioning for Rectilinear Polygons Report B 93-17, Berlin, December 93 tr-b-93-18.ps.gz Frank Wagner Approximate Map Labeling is in $\Omega(n\log n)$ Report B 93-18, Berlin, December 93 tr-b-94-01.ps.gz Pavel Valtr Probability that n random points are in convex position Report B 94-01, Berlin, January 94 tr-b-94-02.ps.gz Stefan Felsner, Rudolf Mueller, Lorenz Wernisch Trapezoid Graphs and Generalizations, Geometry and Algorithms Report B 94-02, Berlin, January 94 tr-b-94-03.ps.gz Pavel Valtr (joint work with Jaroslav Nesetril) A Ramsey-type theorem in the plane Report B 94-03, Berlin, January 94 tr-b-94-04.ps.gz Pavel Valtr (joint work with Martin Klazar) Generalized Davenport-Schinzel Sequences Report B 94-04, Berlin, January 94 tr-b-94-05.ps.gz Pavel Valtr On Mutually Avoiding Sets Report B 94-05, Berlin, January 94 tr-b-94-06.ps.gz Herbert Edelsbrunner Cutting Dense Point Sets in Half Report B 94-06, Berlin, March 1994 tr-b-94-07.ps.gz Heiko Doerr An Abstract Machine for the Execution ofGraph Grammars Report B-94-07, Berlin, 7/13/94 tr-b-94-08.ps.gz Heiko Doerr Bypass Strong V-Structures and Find an Isomorphic Labelled Subgraph in Linear Time Report B-94-08, Berlin, 7/13/94 tr-b-94-09.ps.gz Emo Welzl, Scot Drysdale, Matthew Dickerson Fast Greedy Triangulation Algorithms Report B 94-09, Berlin, April 94 tr-b-94-11.ps.gz Emo Welzl, Barbara Wolfers Surface Reconstruction between Simple Polygons via Angle Criteria Report B 94-11, Berlin, April 94 tr-b-94-12.ps.gz Frank Wagner (joint work with Mechthild Stoer) A Simple Min Cut Algorithm Report B 94-12, Berlin, May 94 tr-b-94-13.ps.gz Bernd Gaertner (joint work with Guenter Ziegler) Randomized Simplex Algorithms on Klee-Minty Cubes Report B 94-13, Berlin, May 94 tr-b-94-14.ps.gz Yachin Pnueli Digital Image Compression -- A Brief Overview Report B 94-14, Berlin, June 94 tr-b-94-16.ps.gz Torsten Thiele (joint work with Hanno Lefmann) Point Sets with Distinct Distances Report B 94-16, Berlin, August 94 tr-b-94-17.ps.gz Yachin Pnueli More on Oracles and Quantifiers Report B 94-17, Berlin, September 1994 tr-b-94-18.ps.gz Helmut Alt Matching Shapes with a Reference Point Report B 94-18, Berlin, October 1994 tr-b-94-19.ps.gz Yachin Pnueli Oracles and First Order Lindström Quantifiers -- A correction to TR # B 94-17 Report B 94-19, Berlin, November 1994 tr-b-94-21.ps.gz Stefan Felsner On-Line Chain Partitions of Orders Report B 94-21, Berlin, Dezember 1994 tr-b-94-22.ps.gz Frank Hoffmann The Art Gallery Theorem for Rectilinear Polygons with Holes Report B 94-22, Berlin, Dezember 1994 tr-b-95-01.ps.gz Enno Scholz A Concurrency Monad Based on Constructor Primitives, or, Being First-Class is not Enough Report B 95-01, Berlin, Januar 1995 tr-b-95-02.ps.gz Torsten Thiele A Lower Bound on the Independence Number of General Hypergraphs in Terms of the Degree Vectors Report B 95-02, Berlin, Maerz 1995 tr-b-95-03.ps.gz David Alberts Average Case Analysis of Dynamic Graph Algorithms Report B 95-03, Berlin, Maerz 1995 tr-b-95-04.ps.gz Frank Wagner, Alexander Wolff Map Labeling Heuristics: Provably Good and Practically Useful Report B 95-04, Berlin, April 1995 tr-b-95-05.ps.gz Lutz Kettner A Classification Scheme of 3D Interaction Techniques Report B 95-05, Berlin, April 1995 tr-b-95-06.ps.gz Emo Welzl Voronoi Diagrams of Lines in 3-Space Under Polyhedral Convex Distance Functions Report B 95-06, Berlin, April 1995 tr-b-95-07.ps.gz Thomas Wolff The moderate approach to integrating concurrency and object-orientation Report B 95-07, Berlin, Mai 1995 tr-b-95-08.ps.gz Klaus-Peter Loehr Verteilungstransparenz bei der objektorientierten Spezifikation verteilter Applikationen Report B 95-08, Berlin, Mai 1995 tr-b-95-09.ps.gz Alexandra Weidmann Sprachen für parallele objektorientierte Programmierung Report B 95-09, Berlin, Mai 1995 tr-b-95-10.ps.gz David Alberts Implementation of the Dynamic Connectivity Algorithm by Monika Rauch Henzinger and Valerie King Report B 95-10, Berlin, Juni 1995 tr-b-95-11.ps.gz Maria Labarta Postigo Der Zusammenhang zwischen Abbildungen und Text in Software-Dokumentationen Report B 95-11, Berlin, Juli 1995 tr-b-95-12.ps.gz Jutta Schumann Effektivität von Computergraphiken in vorläufigen Präsentationen Report B 95-12, Berlin, November 1995 tr-b-95-13.ps.gz Enno Scholz PIDGETS - Unifying Pictures and Widgets in a Simple Model for Concurrent Functional GUI Programming Report B 95-13, Berlin, 1995 tr-b-95-14.ps.gz Institut fuer Informatik Universal 3-Dimensional Visibility Representations for Graphs Report B 95-14, Berlin, November 1995 tr-b-95-15.ps.gz Matthias Horn Improving Parallel Implementationsof Lazy Functional LanguagesUsing Evaluation Transformers Report B-95-15, Berlin, 11/94 tr-b-95-16.ps.gz Artur Andrzejak A Polynomial-time algorithm for computation of the Tutte polynomials of graphs of bounded treewidth Report B 95-16, Berlin, December 1995 tr-b-95-19.ps.gz Gerald Weber Point Pattern Matching Report B 95-19, Berlin, December 1995 tr-b-95-20.ps.gz Institut fuer Informatik On the Number of Arrangements of Pseudolines Report B 95-20, Berlin, December 1995 tr-b-95-21.ps.gz Artur Andrzejak Splitting formulas for Tutte polynomials Report B 95-21, Berlin, December 1995 tr-b-96-01.ps.gz Frank Hoffmann, Christian Icking, Rolf Klein, Klaus Kriegel An Efficient Competitive Strategy for Learning a Polygon Report B 96-01, Berlin, February 1996 tr-b-96-02.ps.gz Regina Klimmek A Simple Hypergraph Min Cut Algorithm Report B 96-02, Berlin, March 1996 tr-b-96-03.ps.gz Helmut Alt, Ulrich Fuchs, Gerald Weber Matching Convex Shapes With Respect to the Symmetric Difference Report B 96-03, Berlin, April 1996 tr-b-96-04.ps.gz Raúl Rojas Die Rechenmaschinen von Konrad Zuse - Sechzig Jahre Computergeschichte Report B 96-04, Berlin, May 1996 tr-b-96-05.ps.gz Christian E. G. Maurer List Objects and Recursive Algorithms in Elementary Topoi , Berlin, Christian E. G. Maurer tr-b-96-06.ps.gz David A. Grable Nearly optimal distributed edge \\colouring in $O(\log \log n)$ rounds Report B 96-06, Berlin, July 1996 tr-b-96-07.ps.gz Matthias Horn Improved Integration of Multithreading into the STGM Report B-96-07, Berlin, 11/94 tr-b-96-08.ps.gz Viggo Kann (viggo@nada.kth.se) Approximate Max k-Cut with Subgraph Guarantee Report B-96-08, Berlin, August 1996 tr-b-96-11.ps.gz Helmut Alt Discrete Geometric Shapes: Matching, Interpolation, and Approximation Report B 96-11, Berlin, December 1996 tr-b-97-01.ps.gz Guenter Feuer, Peter Loehr, Raúl Rojas, (Hrsg.) Das Globale Datennetz: Technische Möglichkeiten - soziale Auswirkungen Report B 97-01, Berlin, Maerz 1997 tr-b-97-02.ps.gz Gerald Brose JacORB - A Java Object Request Broker Report B 97-02, Berlin, April 1997 tr-b-97-03.ps.gz Bernd Gärtner Smallest Enclosing Ellipses - Fast and Exact Report B 97-03, Berlin, May 1997 tr-b-97-04.ps.gz Peter Brass On point sets with many unit distances in few directions Report B 97-04, Berlin, June 1997 tr-b-97-05.ps.gz Peter Brass Isoperimetric Inequalities for densities of lattice-periodic sets Report B 97-05, Berlin, June 1997 tr-b-97-06.ps.gz Stefan Felsner The Linear-Extension-Diameter of a Poset Report B 97-06, Berlin, June 1997 tr-b-97-08.ps.gz Helmut Alt On the Number of Simple Cycles in Planar Graphs Report B 97-08, Berlin, September 1997 tr-b-97-09.ps.gz Stefan Felsner Triangles in Euclidean Arrangements Report B 97-09, Berlin, November 1997 tr-b-97-10.ps.gz Helmut Alt Point-sets with few k-sets Report B 97-10, Berlin, November 1997 tr-b-97-11.ps.gz Stefan Felsner Finite Three Dimensional Partial Orders which are not Sphere Orders Report B 97-11, Berlin, November 1997 tr-b-97-12.ps.gz Peter Brass On equilateral simplices in normed spaces Report B 97-12, Berlin, November 1997 tr-b-97-13.ps.gz Frank Hoffmann Matching 2D Patterns of Protein Spots Report B 97-13, Berlin, November 1997 tr-b-97-14.ps.gz Concurrency, Distribution and Parallelism in Object-Oriented Programming Concurrency, Distribution and Parallelism in Object-Oriented Programming , Berlin, Concurrency, Distribution and Parallelism in Object-Oriented Programming tr-b-98-01.ps.gz Shiva Chaudhuri On Mimicking Networks Report B 98-01, Berlin, February 1998 tr-b-98-02.ps.gz Peter Braß On the Diameter of Sets with Maximum Number of Unit Distances Report B 98-02, Berlin, February 1998 tr-b-98-04.ps.gz Bernd Gaertner Smallest Enclosing Circles - An Exact and Generic Implementation Report B 98-04, Berlin, April 1998 tr-b-98-05.ps.gz Bernd Gaertner Smallest Enclosing Ellipses - An Exact and Generic Implementation Report B 98-05, Berlin, April 1998 tr-b-98-06.ps.gz Stefan Felsner Sweeps, Arrangements and Signotopes Report B 98-06, Berlin, April 1998 tr-b-98-07.ps.gz Stefan Felsner Interval Reductions and Extensions of Orders: Bijections to Chains in Lattices Report B 98-07, Berlin, April 1998 tr-b-98-09.ps.gz Boris Bokowski Barat - A Front-End for Java Report B 98-09, Berlin, December 1998 tr-b-98-10.ps.gz Stefan Felsner The Maximum Number of Edges in a Graph of Bounded Dimensions with Applications to Ring Theory Report B 98-10, Berlin, August 1998 tr-b-98-11.ps.gz Stefan Felsner Posets and Planar Graphs Report B 98-11, Berlin, August 1998 tr-b-98-12.ps.gz Stefan Felsner Dimension, Graph and Hypergraph Coloring Report B 98-12, Berlin, August 1998 tr-b-98-13.ps.gz Andr Spiegel Objects by Value: Evaluating the Trade-Off Report B 98-13, Berlin, September 1998 tr-b-98-14.ps.gz Boris Bokowski CoffeeStrainer - Statically Checking Structural Constraints on Java Programs Report B 98-14, Berlin, December 1998 tr-b-98-15.ps.gz Report B 98-15 Higher Order Demand Propagation Report B 98-15, Berlin, Oktober 1998 tr-b-98-16.ps.gz Report B 98-16 The Safety of Higher Order Demand Propagation Report B 98-16, Berlin, November 1998 tr-b-98-17.ps.gz Report B 98-17 Byte Code Engineering with the JavaClass API Report B 98-17, Berlin, November 1998 tr-b-99-01.ps.gz Carola Wenk Applying an Edit Distance to the Matching of Tree Ring Sequences in Dendrochronology Report B 99-01, Berlin, January 1999 tr-b-99-03.ps.gz Report B 99-03 The Formal Framework of the HyperView System Report B 99-03, Berlin, March 1999 tr-b-99-04.ps.gz Stefan Felsner Zonotoptes Associated with Higher Bruhat Orders Report B 99-04, Berlin, March 1999 tr-b-99-05.ps.gz Stefan Felsner Recognition Algorithms for Orders of Small Width and Graphs of Small Dilworth Number Report B 99-05, Berlin, March 1999 tr-b-99-06.ps.gz Peter Brass On strongly normal tesselations Report B 99-06, Berlin, April 1999 tr-b-99-07.ps.gz Peter Brass On the number of maximum-area triangles in a planar graph Report B 99-07, Berlin, April 1999 tr-b-99-08.ps.gz Alexander Wolff Labeling Points with Circles Report B 99-08, Berlin, April 1999 tr-b-99-09.ps.gz Report B 99-09 The Formal Framework of the HyperView System Report B 99-09, Berlin, March 1999 tr-b-99-10.ps.gz Peter Brass On the number of cylinders touching a ball Report B 99-10, Berlin, June 1999 tr-b-99-11.ps.gz Andr Spiegel Object Graph Analysis Report B 99-11, Berlin, July 1999 tr-b-99-16.ps.gz Joerg Caumanns A Fast and Simple Stemming Algorithm for German Words Report B 99-16, Berlin, October 1999 tr-b-99-18.ps.gz Peter Brass Testing the congruence of d-dimensional point sets Report B 99-18, Berlin, November 1999 tr-b-99-19.ps.gz Stefan Felsner The Compelxity of Partial Order Properties Report B 99-19, Berlin, December 1999 tr-b-99-20.ps.gz Stefan Felsner The Skeleton of a Reduced Word and a Correspondence of Edelman and Greene Report B 99-20, Berlin, December 1999 tr-b-99-21.ps.gz Frank Hoffmann A Simple and Robust Geometric Algorithm for Landmark Registration in Computer Assisted Neurosurgery Report B 99-21, Berlin, December 1999 tr-b-99-22.ps.gz Marek Lassak Approximation of Convex Bodies by Rhombi and by other Axially Symmetric Bodies Report B 99-22, Berlin, December 1999