On Bojarski's index formula for nonsmooth interfaces.
Mitrea, Marius (1999)
Electronic Research Announcements of the American Mathematical Society [electronic only]
Mauro Nacinovich (1985)
Annales Polonici Mathematici
Xu, Zhenyuan (1990)
Proceedings of the Winter School "Geometry and Physics"
A. A. Du Plessis, C. T. C. Wall (1989)
Publications Mathématiques de l'IHÉS
Anton Dekrét (1972)
Czechoslovak Mathematical Journal
Molev, A. I. (1991)
Proceedings of the Winter School "Geometry and Physics"
Janusz Grabowski, Paweŀ Urbański (2003)
Open Mathematics
We characterize Poisson and Jacobi structures by means of complete lifts of the corresponding tensors: the lifts have to be related to canonical structures by morphisms of corresponding vector bundles. Similar results hold for generalized Poisson and Jacobi structures (canonical structures) associated with Lie algebroids and Jacobi algebroids.
R. Brooks, P. Perry, Petersen V, P. (1993)
Commentarii mathematici Helvetici
Abrosimov, N.V. (2006)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
Wenxue Huang (1996)
Czechoslovak Mathematical Journal
Er Jian Xiao (1983)
Mathematische Annalen
Obukhovskii, Valeri, Zecca, Pietro, Zvyagin, Victor (2002)
Abstract and Applied Analysis
Jiří Durdil (1976)
Commentationes Mathematicae Universitatis Carolinae
Jürgen Moser (1990)
Mathematische Zeitschrift
Samuel I. Goldberg, Izu Vaisman (1980)
Annales de la Faculté des sciences de Toulouse : Mathématiques
Holubowicz, Ryszard, Mozgawa, Witold (1998)
Proceedings of the 17th Winter School "Geometry and Physics"
Kuz'minov, V.I., Shvedov, I.A. (2003)
Sibirskij Matematicheskij Zhurnal
Csaba Vincze, Tahere Reza Khoshdani, Sareh Mehdi Zadeh Gilani, Márk Oláh (2019)
Communications in Mathematics
In the paper we characterize the two-dimensional generalized Berwald manifolds in terms of the classical setting of Finsler surfaces (Berwald frame, main scalar etc.). As an application we prove that if a Landsberg surface is a generalized Berwald manifold then it must be a Berwald manifold. Especially, we reproduce Wagner's original result in honor of the 75th anniversary of publishing his pioneering work about generalized Berwald manifolds.
D. Fischer-Colbrie (1985)
Inventiones mathematicae
R.S. Kulkarni (1978)
Inventiones mathematicae