Casimir elements and optimal control
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V. Jurdjevic (1995)
Banach Center Publications
Arjeh M. Cohen, Gabriele Nebe, Wilhelm Plesken (1996)
Compositio Mathematica
Valentino Magnani (2006)
Journal of the European Mathematical Society
We establish an explicit connection between the perimeter measure of an open set with boundary and the spherical Hausdorff measure restricted to , when the ambient space is a stratified group endowed with a left invariant sub-Riemannian metric and denotes the Hausdorff dimension of the group. Our formula implies that the perimeter measure of is less than or equal to up to a dimensional factor. The validity of this estimate positively answers a conjecture raised by Danielli, Garofalo...
Boussejra, A., Sami, H. (2002)
Journal of Lie Theory
D. Shelstad (1979)
Compositio Mathematica
N. B. Backhouse, J. Rembielinski, W. Tybor (1996)
Δελτίο της Ελληνικής Μαθηματικής Εταιρίας
J. Ludwig, M.E.B. Bekka (1990)
Mathematische Zeitschrift
Paweł Głowacki (2010)
Colloquium Mathematicae
We prove the composition and L²-boundedness theorems for the Nagel-Ricci-Stein flag kernels related to the natural gradation of homogeneous groups.
Yuri L. Sachkov (2010)
ESAIM: Control, Optimisation and Calculus of Variations
The left-invariant sub-Riemannian problem on the group of motions (rototranslations) of a plane SE(2) is studied. Local and global optimality of extremal trajectories is characterized. Lower and upper bounds on the first conjugate time are proved. The cut time is shown to be equal to the first Maxwell time corresponding to the group of discrete symmetries of the exponential mapping. Optimal synthesis on an open dense subset of the state space is described.
Mladen Božičević (2008)
Annales mathématiques Blaise Pascal
Let be a real form of a complex semisimple Lie group . Recall that Rossmann defined a Weyl group action on Lagrangian cycles supported on the conormal bundle of the flag variety of . We compute the signed average of the Weyl group action on the characteristic cycle of the standard sheaf associated to an open -orbit on the flag variety. This result is applied to find the value of the constant term in Harish-Chandra’s limit formula for the delta function at zero.
M. Anoussis, A. Bisbas (2000)
Annales de l'institut Fourier
We study continuous measures on a compact semisimple Lie group using representation theory. In Section 2 we prove a Wiener type characterization of a continuous measure. Next we construct central measures on which are related to the well known Riesz products on locally compact abelian groups. Using these measures we show in Section 3 that if is a compact set of continuous measures on there exists a singular measure such that is absolutely continuous with respect to the Haar measure on...
Ewa Damek (1989)
Colloquium Mathematicae
P. Juutinen, G. Lu, J. J. Manfredi, B. Stroffolini (2007)
Revista Matemática Iberoamericana
Francescopaolo Montefalcone (2016)
Analysis and Geometry in Metric Spaces
In this paper, we generalize to sub-Riemannian Carnot groups some classical results in the theory of minimal submanifolds. Our main results are for step 2 Carnot groups. In this case, we will prove the convex hull property and some “exclosure theorems” for H-minimal hypersurfaces of class C2 satisfying a Hörmander-type condition.
Michel Duflo, David Wigner (1979)
Mathematische Zeitschrift
E. P. Van den Ban, H. Schlichtkrull (1993)
Compositio Mathematica
Paweł Głowacki (2010)
Colloquium Mathematicae
Yuri L. Sachkov (2011)
ESAIM: Control, Optimisation and Calculus of Variations
The left-invariant sub-Riemannian problem on the group of motions (rototranslations) of a plane SE(2) is considered. In the previous works [Moiseev and Sachkov, ESAIM: COCV, DOI: 10.1051/cocv/2009004; Sachkov, ESAIM: COCV, DOI: 10.1051/cocv/2009031], extremal trajectories were defined, their local and global optimality were studied. In this paper the global structure of the exponential mapping is described. On this basis an explicit characterization of the cut locus and Maxwell set is obtained....
Yuri L. Sachkov (2011)
ESAIM: Control, Optimisation and Calculus of Variations
The left-invariant sub-Riemannian problem on the group of motions (rototranslations) of a plane SE(2) is considered. In the previous works [Moiseev and Sachkov, ESAIM: COCV, DOI: 10.1051/cocv/2009004; Sachkov, ESAIM: COCV, DOI: 10.1051/cocv/2009031], extremal trajectories were defined, their local and global optimality were studied. In this paper the global structure of the exponential mapping is described. On this basis an explicit characterization of the cut locus and Maxwell set is obtained....
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