Geodesic
On completeness of groups of diffeomorphisms
Journal of the European Mathematical Society, Tome 19 (2017) no. 5, pp. 1507-1544.

Voir la notice de l'article provenant de la source EMS Press

We study completeness properties of the Sobolev diffeomorphism groups Ds(M) endowed with strong right-invariant Riemannian metrics when M is Rd or a compact manifold without boundary. We prove that for s> dim (M)/2+1, the group Ds(M) is geodesically and metrically complete and any two diffeomorphisms in the same component can be joined by a minimal geodesic. We then present the connection between the Sobolev diffeomorphism group and the large deformation matching framework in order to apply our results to diffeomorphic image matching.
DOI : 10.4171/jems/698
Classification : 58-XX, 35-XX
Keywords: Diffeomorphism groups, Sobolev metrics, strong Riemannian metric, completeness, minimizing geodesics 
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     author = {Martins Bruveris and Fran\c{c}ois-Xavier Vialard},
     title = {On completeness of groups of diffeomorphisms},
     journal = {Journal of the European Mathematical Society},
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     year = {2017},
     doi = {10.4171/jems/698},
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Martins Bruveris; François-Xavier Vialard. On completeness of groups of diffeomorphisms. Journal of the European Mathematical Society, Tome 19 (2017) no. 5, pp. 1507-1544. doi : 10.4171/jems/698. http://geodesic.mathdoc.fr/articles/10.4171/jems/698/

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