Heinz Häfner

Heinz Nixdorf Institute Heinz Nixdorf

Biharmonic Distance Björn Häfner Fakultät für Mathematik - Technische Universität München

This report investigates the paper Lipman et al. Biharmonic distance, who introduced a new distance measure, called biharmonic. We examine the approach of the distance, which is based on the Green’s kernel of the Bi-Laplacian in the continuous and the discrete setting. For the discrete setting we have two different methods of calculation, an approximate as well as an exact computation. Furtherm...

The Heinz fellowships 1960-80.

This paper celebrates a 25th birthday, a record of learning and teaching across the Commonwealth. It began in 1959, when Philip Evans (secretary, British Paediatric Association 1954-59) and Reginald Lightwood (Head of University Department of Paediatrics, St Mary's Medical School, London), convinced that paediatric teaching exchanges would improve child health within the Commonwealth, sought th...

Extensions of Heinz - Kato - Furuta

Reprints available directly from the publisher Photocopying permitted by license only (C) 1999 OPA (Overseas Publishers Association) N.V. In our preceding note, we discussed a generalized Schwarz inequality, an improvement of the Heinz-Kato-Furuta inequality and an inequality related to the Furuta inequality. In succession, we give further discussions on them from the viewpoint of the covarianc...

Foliations and Chern-Heinz inequalities

We extend the Chern-Heinz inequalities about mean curvature and scalar curvature of graphs of C2-functions to leaves of transversally oriented codimension one C2-foliations of Riemannian manifolds. That extends partially Salavessa’s work on mean curvature of graphs and generalize results of Barbosa-Kenmotsu-Oshikiri [3] and Barbosa-GomesSilveira [2] about foliations of 3-dimensional Riemannian ...