Concept

Groupe topologique

Publications associées (117)

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An Hybrid Approach for Robust and Precise Mobile Robot Navigation with Compact Environment Modeling

Roland Siegwart, Nicola Tomatis, Kai Oliver Arras

In this paper a new localization approach combining the metric and topological paradigm is presented. The main idea is to connect local metric maps by means of a global topological map. This allows a compact environment model which does not require global ...

2001

A history of rational homotopy theory

Kathryn Hess Bellwald

Rational homotopy theory is the study of topological spaces “modulo torsion”. When rational homotopy theorists calculate algebraic invariants of a topological space, such as its homotopy or homology groups, they retain only the nontorsion information. Alge ...

Elsevier Science B.V.1999

The 3-regular nets with 4 and 6 vertices per unit cell

The 3-regular nets with 4 and 6 vertices per unit cell are enumerated. The large number of nets obtained (5 nets and 269 nets resp.) is in stark contrast to the relatively small number of nets which are of crystallographic interest. This subset of crystall ...

1997

Zeolite cycle sequences

Cycle sequences are presented as topological invariants of zeolites. The sequences are calculated for 374 topologically inequivalent atoms in 105 zeolite frameworks. All sequences are found to be different. The first nonzero terms of the sequence indicate ...

1997

Modeling using the Visible Human Dataset

Daniel Thalmann, Jean Fasel

Modeling with medical images in this context provides both structural and topological information of different elements. In addition to displaying these elements, the interest is in using them for physically based deformation simulation, motion generation ...

1996

3D interactive topological modeling using visible human dataset

Daniel Thalmann, Jean Fasel

Availability of Visible Human Dataset (VHD) has provided numerous possibilities for its exploitation in both medical applications and 3D animation. We present our interactive tools which enable extraction of surfaces for different organs, including bones, ...

1996

Analysis of multiplets in two-dimensional NMR spectra by topological classification: applications to vinblastine and cyclosporin A

Geoffrey Bodenhausen

A recently developed approach for the anal. of cross-peak multiplets was applied to 2-dimensional correlation spectra of the binary alkaloid vinblastine and the cyclic undecapeptide cyclosporin A. The exptl. multiplet patterns are encoded in a manner that ...

1988