Shen's $L$-process on Berwald connection

  • M. Faghfouri Univ. Tabriz, Iran)
  • N. Jazer Univ. Tabriz, Iran)
Keywords: Shen’s C and L-Processes, Landsberg metric, Shen connection

Abstract

The Shen connection cannot be obtained by using Matsumoto's processes from the other well-known connections.  Hence Tayebi–Najafi introduced two new processes called Shen's $C$ and $L$-processes and showed that the Shen connection is obtained from the Chern connection by Shen's $C$-process.  In this paper, we  study the Shen's $C$- and $L$-process on Berwald connection and introduce two new torsion-free connections in Finsler geometry.  Then, we obtain all of Riemannian and non-Riemannian curvatures of these connections.  Using it, we find the explicit form of $hv$-curvatures of these connections and prove that $hv$-curvatures of these connections are vanishing if and only if the Finsler structures reduce to Berwaldian or Riemannian structures.  As an application, we consider compact Finsler manifolds and obtain ODEs.



References

H. Akbar-Zadeh, Les espaces de Finsler et certaines de leurs généralisations , (French) Ann. Sci. École Norm. Sup. (3) ´ (3), 80, 1 – 79 (1963), https://doi.org/10.24033/asens.1117 DOI: https://doi.org/10.24033/asens.1117

L. Berwald, Untersuchung der Krümmung allgemeiner metrischer Räume auf Grund des in ihnen herrschenden Parallelismus (German), Math. Z., 25, 40 – 73 (1926), https://doi.org/10.1007/BF01283825 DOI: https://doi.org/10.1007/BF01283825

B. Bidabad, A. Tayebi, Properties of generalized Berwald connections, Bull. Iran. Math. Soc., 35, No. 1, 237 – 254 (2009)

B. Bidabad, A. Tayebi, A classification of some Finsler connections, Publ. Math. Debrecen., 71, No. 3-4, 253 – 260 (2007)

E. Cartan, Les espaces de Finsler, Hermann, Paris (1934).

S. S. Chern, On the Euclidean connections in a Finsler space, Proc. National Acad. Soc., 29, 33 – 37 (1943), https://doi.org/10.1073/pnas.29.1.33 DOI: https://doi.org/10.1073/pnas.29.1.33

L. Kozma, L. Tamássy, Finsler geometry without line elements faced to applications, Proceedings of the XXXIV Symposium on Mathematical Physics (Toruń, 2002). Rep. Math. Phys., 51, 233 – 250, (2003), https://doi.org/10.1016/S0034-4877(03)80017-4 DOI: https://doi.org/10.1016/S0034-4877(03)80017-4

M. Matsumoto, Finsler connections with many torsions, Tensor (N.S.), 71, 217 – 226, (1966).

Z. Muzsnay, P. T. Nagy, Invariant Shen connections and geodesic orbit spaces, Period. Math. Hung., 51, 37 – 51, (2005).

B. Najafi, A. Tayebi A., On a family of Einstein – Randers metric, Int. J. Geom. Methods Mod. Phys., 8,no. 1, 1021 – 1029, (2011), https://doi.org/10.1007/s10998-005-0019-3 DOI: https://doi.org/10.1007/s10998-005-0019-3

Z. Shen, On a connection in Finsler geometry, Houston J. Math., 20, No. 4, 591 – 602 (1994)

A. Tayebi, On the class of generalized Landsbeg manifolds, Period. Math. Hung., 72, No. 1, 29 – 36, (2016), https://doi.org/10.1007/s10998-015-0108-x DOI: https://doi.org/10.1007/s10998-015-0108-x

A. Tayebi, B. Barzagari, Generalized Berwald spaces with $(alpha , beta)$-metrics, Indag. Math., 27, No. 3, 670 – 683 (2016), https://doi.org/10.1016/j.indag.2016.01.002 DOI: https://doi.org/10.1016/j.indag.2016.01.002

A. Tayebi, E. Azizpour, E. Esrafilian, On a family of connections in Finsler geometry, Publ. Math. Debrecen., 72, No. 1-2, 1 – 15, (2008)

A. Tayebi, E. Peyghan, B. Najafi, On semi-$C$-reducibility of $(alpha,beta)$-metrics, Int. J. Geom. Methods Mod. Phys., 9, № 4, Article 1250038, 10 pp. (2012), https://doi.org/10.1142/S0219887812500387 DOI: https://doi.org/10.1142/S0219887812500387

A. Tayebi, B. Najafi, On isotropic Berwald metrics, Ann. Polon. Math., 103, No. 2, 109 – 121 (2012), https://doi.org/10.4064/ap103-2-1 DOI: https://doi.org/10.4064/ap103-2-1

A. Tayebi, B. Najafi, Shen’s processes on Finslerian connections, Bull. Iran. Math. Soc., 36, No. 2, 57 – 73 (2010)

A. Tayebi, A. Nankali, On generalized Einstein randers metrics, Int. J. Geom. Methods Mod. Phys., 12, No. 10, Article 1550105, 14 p (2015), https://doi.org/10.1142/S0219887815501054 DOI: https://doi.org/10.1142/S0219887815501054

A. Tayebi, H. Sadeghi, On Cartan torsion of Finsler metrics, Publ. Math. Debrecen, 82, No. 2, 461 – 471, (2013), https://doi.org/10.5486/PMD.2013.5379 DOI: https://doi.org/10.5486/PMD.2013.5379

A. Tayebi, H. Sadeghi, Generalized $P$-reducible $(alpha,beta)$-metrics with vanishing $S$-curvature, Ann. Polon. Math., 114, No. 1, 67 – 79, (2015), https://doi.org/10.4064/ap114-1-5 DOI: https://doi.org/10.4064/ap114-1-5

A. Tayebi, H. Sadeghi, On generalized Douglas – Weyl $(alpha,beta)$-metrics, Acta Mathe. Sinica (Engl. Ser.), 31, No. 10, 1611 – 1620, (2015), https://doi.org/10.1007/s10114-015-3418-2 DOI: https://doi.org/10.1007/s10114-015-3418-2

A. Tayebi, T. Tabatabaeifar, Dougals – Randers manifolds with vanishing stretch tensor, Publ. Math. Debrecen, 86, No. 3 - 4, 423 – 432 (2015), https://doi.org/10.5486/pmd.2015.7033 DOI: https://doi.org/10.5486/PMD.2015.7033

Published
18.08.2020
How to Cite
Faghfouri, M., and N. Jazer. “Shen’s $L$-Process on Berwald Connection”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 72, no. 8, Aug. 2020, pp. 1134-48, doi:10.37863/umzh.v72i8.6001.
Section
Research articles