Soit une surface compacte, connexe, orientée, éventuellement à bord, de caractéristique d’Euler négative. Dans cet article nous étendons la classification des mesures ergodiques, localement finies et invariantes sous l’action du mapping class group, sur l’espace des laminations mesurées obtenue par Lindenstrauss–Mirzakhani et Hamenstädt, à l’espace des courants géodésiques , et nous discutons le cas homogène. De plus, nous étendons la classification de la fermeture des orbites obtenue par Lindenstrauss–Mirzakhani à . Notre argument repose sur leurs résultats et sur le décomposition d’un courant en une somme de trois courants avec supports isotopiquement disjoints : une lamnation mesurée sans feuilles fermées, une multi-courbe simple et un courant qui remplit son enveloppe.
Let be a compact, connected, oriented surface, possibly with boundary, of negative Euler characteristic. In this article we extend Lindenstrauss–Mirzakhani’s and Hamenstädt’s classification of locally finite mapping class group invariant ergodic measures on the space of measured laminations to the space of geodesic currents , and we discuss the homogeneous case. Moreover, we extend Lindenstrauss–Mirzakhani’s classification of orbit closures to . Our argument relies on their results and on the decomposition of a current into a sum of three currents with isotopically disjoint supports: a measured lamination without closed leaves, a simple multi-curve and a current that binds its hull.
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Keywords: Hyperbolic surfaces, geodesic currents, mapping class group, measure classification
Mot clés : Surfaces hyperboliques, courants géodésiques, groupe modulaire, classification de mesures
Erlandsson, Viveka 1 ; Mondello, Gabriele 2
@article{AIF_2022__72_6_2449_0, author = {Erlandsson, Viveka and Mondello, Gabriele}, title = {Ergodic invariant measures on the space of geodesic currents}, journal = {Annales de l'Institut Fourier}, pages = {2449--2513}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {72}, number = {6}, year = {2022}, doi = {10.5802/aif.3498}, language = {en}, url = {https://aif.centre-mersenne.org/articles/10.5802/aif.3498/} }
TY - JOUR AU - Erlandsson, Viveka AU - Mondello, Gabriele TI - Ergodic invariant measures on the space of geodesic currents JO - Annales de l'Institut Fourier PY - 2022 SP - 2449 EP - 2513 VL - 72 IS - 6 PB - Association des Annales de l’institut Fourier UR - https://aif.centre-mersenne.org/articles/10.5802/aif.3498/ DO - 10.5802/aif.3498 LA - en ID - AIF_2022__72_6_2449_0 ER -
%0 Journal Article %A Erlandsson, Viveka %A Mondello, Gabriele %T Ergodic invariant measures on the space of geodesic currents %J Annales de l'Institut Fourier %D 2022 %P 2449-2513 %V 72 %N 6 %I Association des Annales de l’institut Fourier %U https://aif.centre-mersenne.org/articles/10.5802/aif.3498/ %R 10.5802/aif.3498 %G en %F AIF_2022__72_6_2449_0
Erlandsson, Viveka; Mondello, Gabriele. Ergodic invariant measures on the space of geodesic currents. Annales de l'Institut Fourier, Tome 72 (2022) no. 6, pp. 2449-2513. doi : 10.5802/aif.3498. https://aif.centre-mersenne.org/articles/10.5802/aif.3498/
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