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Research focus:

Lehrstuhl für Mathematik IV Am Hubland, 97074 Würzburg Mail: -math4@mathematik.uni-wuerzburg.de Url: http://www3.mathematik.uni-wuerzburg.de

Scientific members:

   Professors:

• Prof. Dr. Stephan Ruscheweyh ,Tel: 0931 888 5005,Fax: 0931 888 5376,Mail: ruscheweyh@mathematik.uni-wuerzburg.de

   Scientific assistants:

• Dr. Richard Greiner ,Tel: 0931 888 5029,Fax: 0931 888 5376,Mail: greiner@mathematik.uni-wuerzburg.de

   Other participating persons and organisations:

• Prof. Dr. V. V. Andrievskii (USA)

Research foci (and basic equipment-based research projects):

• Structure-preserving approximation
  
• maximal range problems
  

Results:

1. V.V. Andrievskii, St. Ruscheweyh, Complex polynomials and maximal ranges: background and applications, in: Recent Progress in Inequalities (Milovanovic, G.V., Ed.), Kluwer Academic Publishers. Math. Appl., Dordr. 430 (1998), 31 -- 54.
   
2. R. Greiner, Generalized Jackson kernels in approximation theory,
   Proceedings of the CMFT '97, 1999, 259-266.