Hans De Vogel, 1904–1989

Hans Arnold Heilbronn 1908-1975 Hans

Gap Sheaves and Vogel Cycles

Throughout our work on the Lê cycles of an affine hypersurface singularity (see [M2-5]), our primary algebraic tool consisted of a method for taking the Jacobian ideal of a complex analytic function and decomposing it into pure-dimensional “pieces”. These pieces were obtained by considering the relative polar varieties of Lê and Teissier (see, for example, [L-T], [T1], [T2]) as gap sheaves in t...

Hans Meinhardt

Hans Meinhardt is a theoretical developmental biologist working at the Max-Planck-Institute for Developmental Biology in Tübingen. He has pioneered the use of mathematical modelling of embryonic pattern formation. He received his PhD from the University of Cologne in Physics. For a postdoctoral fellowship, he went to the European High Energy Laboratory CERN at Geneva. By collaborating in an exp...

Chair : Hans

Editorial Hans

European Journal of Information Systems (2008) 17, 555–556. doi:10.1057/ejis.2008.58 It is my pleasure to write the editorial for the last issue of this year of the European Journal of Information Systems (EJIS). This issue contains no less than nine papers. It is my privilege to introduce them below. We are starting off this issue with a paper from Thompson Teo and Bing Men on knowledge portal...