Geodesic
On some generalization of the Willmore functional for surfaces in~$\widetilde{SL}_2$
Sibirskie èlektronnye matematičeskie izvestiâ, Tome 7 (2010), pp. 140-149.

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We propose some generalization of the Willmore functional for closed surfaces in$\widetilde{SL}_2$. We discuss the relation between this functional and isoperimetric problem in $\widetilde{SL}_2$.
Keywords: Thorston’s geometry, Willmore functional. 
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D. A. Berdinskii. On some generalization of the Willmore functional for surfaces in~$\widetilde{SL}_2$. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 7 (2010), pp. 140-149. http://geodesic.mathdoc.fr/item/SEMR_2010_7_a14/

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