Ulf Rehmann | |
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Fakultät für Mathematik Universität Bielefeld ( Letters:) Postfach 10013133501 Bielefeld ( Parcels:) Universitätsstr. 25 33615 Bielefeld Germany |
Office: V4-240 Tel: (+49) 521 106 49 98 (Office) Fax: (+49) 521 106 64 61 (Office) Tel: (+49) 521 106 50 22 (Secretary) Tel: (+49) 521 10 54 91 (Home) email: rehmann@math.uni-bielefeld.de |

- Linear algebraic groups over arbitrary fields, anisotropic groups
- Quadratic forms, splitting behavior and invariants
- Azumaya algebras, index and exponent reduction, splitting properties

Study of 1. gives information for 2. and 3., and vice versa.

- The Digital Mathematics Library,
its Actual State, and its Possible Future Developments,

Talk given on the workshop The Future World Heritage Digital Mathematics Library: Plans and Prospects

Washington DC, June 1-3, 2012, National Academy of Sciences. - Retrodigitized Mathematical Journals and Monographs (This list will be updated.)
- Books, digitized in Bielefeld (Almost all books are searchable, this list will be extended.)
- The Digital Mathematics Library (DML)
- Our Mathematical Heritage Versus the Organisatorial and Copyright Nightmare, Mainz 2005
- Digital Mathematics Library - die - "Globale mathematische Weltbibliothek" Vortrag auf der IuK-Herbsttagung 2002 Blaubeuren, 3.-5. Oktober 2002
- Documenta Mathematica,
A Community-Driven Scientific Journal,

High Energy Physics Libraries Webzine Issue 8 / October 2003 [ local copy of preceeding link] - Report on DOCUMENTA MATHEMATICA given at ChALS 2003: Chalmers Annual Library Seminars, Göteborg, on Sept. 24, 2003
- Reports on Electronic Publishing
- Price Surveys on Math Journals
- A Community Driven Scientific Journal (Talk, Bielefeld, 2004)

- Coordinator: RTN-Network HPRN-CT-2002-00287
- Coordinator: INTAS-Project INTAS-99-00817 "Linear Algebraic Groups and Related Linear and Homological Structures"
- Coordinator: TMR-Network ERB FMRX CT-97-0107 (ended on June 30, 2002).

- Editor: DOCUMENTA MATHEMATICA
- Editor: Preprint Server on Linear Algebraic Groups and Related Structures
- Editor (until July 2019): Homology, Homotopy and Applications [EMIS]
- Editor: ICM'98: Conference Proceedings
- Editor in Chief:
Encyclopedia of Mathematics

This is a Wikipedia like edition, it is open access and everything is in the public domain, co-licensed under the Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA) and the GNU Free Documentation License (GFDL) - Editor (jointly with Yuri Tschinkel): Martin Kneser, Collected Works, 2021 (Birkhäuser)
- Organizer of Local Mirrors:
- MathSciNet Bielefeld, for subscribers only (until 2010)
- The Mathematics Genealogy Project (until 2018)

- Editor

Member of Deutsche Mathematiker-Vereinigung (DMV), of American Mathematical Society (AMS), and of European Mathematical Society (EMS).