Geodesic
An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 16 (2020) no. 3, pp. 221-227 
Alexander A. Borisenko. An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 16 (2020) no. 3, pp. 221-227. http://geodesic.mathdoc.fr/item/JMAG_2020_16_3_a1/
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Voir la notice de l'article provenant de la source Math-Net.Ru

In the paper, a generalization of the Toponogov theorem about the length of a curve in a two-dimensional Riemannian manifold is proved for the case of two-dimensional Aleksandrov spaces.

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