Mathematical analysis/Differential geometry
On a projectively invariant distance on Finsler spaces of constant negative Ricci scalar
[Sur une distance projectivement invariante dans les espaces d'Einstein–Finsler]
Comptes Rendus. Mathématique, Tome 352 (2014) no. 12, pp. 999-1003.

Dans ce travail, une distance intrinsèque projectivement invariante est utilisée pour établir une nouvelle approche en vue de l'étude de la géométrie projective dans les espaces de Finsler. Il est démontré que la distance projectivement invariante définie précédemment est un multiple constant de la distance finslérienne dans le cas où celle-ci est complète (à la fois en avant et en arrière). Par conséquent, deux espaces d'Einstein–Finsler complets à courbure scalaire constante négative sont homothétiques. Évidemment, ceci sera vrai aussi pour les espaces de Finsler à courbure sectionelle constante.

In this work, an intrinsic projectively invariant distance is used to establish a new approach to the study of projective geometry in a Finsler space. It is shown that the projectively invariant distance previously defined is a constant multiple of the Finsler distance when the manifold in question is both forward and backward complete. As a consequence, two projectively related complete Einstein Finsler spaces with constant negative scalar curvature are homothetic. Evidently, this will be true for Finsler spaces of constant flag curvature as well.

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Accepté le :
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DOI : 10.1016/j.crma.2014.09.011
Sepasi, Maryam 1 ; Bidabad, Behroz 1

1 Department of Mathematics, Amirkabir University of Technology (Tehran Polytechnic), Tehran 15914, Iran
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Sepasi, Maryam; Bidabad, Behroz. On a projectively invariant distance on Finsler spaces of constant negative Ricci scalar. Comptes Rendus. Mathématique, Tome 352 (2014) no. 12, pp. 999-1003. doi : 10.1016/j.crma.2014.09.011. http://www.numdam.org/articles/10.1016/j.crma.2014.09.011/

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