Corners in non-equiregular sub-Riemannian manifolds
ESAIM: Control, Optimisation and Calculus of Variations, Tome 21 (2015) no. 3, pp. 625-634.

We prove that in a class of non-equiregular sub-Riemannian manifolds corners are not length minimizing. This extends the results of [G.P. Leonardi and R. Monti, Geom. Funct. Anal. 18 (2008) 552–582]. As an application of our main result we complete and simplify the analysis in [R. Monti, Ann. Mat. Pura Appl. (2013)], showing that in a 4-dimensional sub-Riemannian structure suggested by Agrachev and Gauthier all length-minimizing curves are smooth.

Reçu le :
DOI : 10.1051/cocv/2014041
Classification : 53C17, 49K21, 49J15
Mots-clés : Sub-Riemannian geometry, regularity of geodesics, corners
Le Donne, Enrico 1 ; Leonardi, Gian Paolo 2 ; Monti, Roberto 3 ; Vittone, Davide 3

1 University of Jyväskylä, Department of Mathematics and Statistics, P.O. Box 35, 40014 Jyväskylä, Finland
2 Università di Modena e Reggio Emilia, Dipartimento di Scienze Fisiche, Informatiche e Matematiche, via Campi 213/b, 41100 Modena, Italy
3 Università di Padova, Dipartimento di Matematica, via Trieste 63, 35121 Padova, Italy
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     title = {Corners in non-equiregular {sub-Riemannian} manifolds},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {625--634},
     publisher = {EDP-Sciences},
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Le Donne, Enrico; Leonardi, Gian Paolo; Monti, Roberto; Vittone, Davide. Corners in non-equiregular sub-Riemannian manifolds. ESAIM: Control, Optimisation and Calculus of Variations, Tome 21 (2015) no. 3, pp. 625-634. doi : 10.1051/cocv/2014041. http://www.numdam.org/articles/10.1051/cocv/2014041/

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