摘要
本文研究了两类重要的(α,β)-度量-(广义)Kropina度量和Matsumoto度量的Cartan张量.证明了这两类(α,β)-度量的Cartan张量是有界的,并由此给出了这两类度量的一些刚性结果及其应用.
In this paper,we study the Cartan torsion of two classes of important(α,β)-metrics including(generalized) Kropina metric and Matsumoto metric.We find that they have bounded Cartan torsion.Moreover,we give some applications and rigid results on these two classes of metrics.
引文
[1]Antonelli,P.L.,Ingarden,R.S.and Matsumoto,M.,The theory of Sprays and Finsler Spaces With Applications in Physics and Biology,FTPH 58,Dordrecht:Kluwer Academic Publishers,1993.
[2]Bao,D.,Chern,S.S.and Shen,Z.,An Introduction to Riemannian-Finsler Geometry,New York:SpringerVerlag,2000.
[3]Burago,D.and Ivanov,S.,Isometric embedding of Finsler manifolds,Algebra i Analiz,1993,5(1):179-192.
[4]Cheng,X.,Wang,H.and Wang,M.,(α,β)-metrics with relatively isotropic mean Landsberg curvature,Publ.Math.Debrecen,2008,72(3/4):475-485.
[5]Chern,S.S.and Shen,Z.,Riemann-Finsler Geometry,Singapore:World Scientific,2005.
[6]Deicke,A.,Uber die Finsler-Raume mit A_i=0,Arch.Math.,1953,4:45-51(in German).
[7]Finsler,P.,Ueber Kurven und Flachen in allgeneinen Raumen,Basel:Birkhauser-Verlag,1951(in German).
[8]Gu,C.H.,imbedding of Finsler manifold in Minkowski space,Acta.Math.Sin.,Chin.Ser.,1957,7:215-232.
[9]Gu,C.H.,imbedding of Finsler manifold in Minkowski space,Acta.Math.Sin.,Chin.Ser.,1958,8:282-285.
[10]Ingarden,R.S.,Uber die Einbetting eines Finslerschen Rammes in einan Minkowskiischen Raum,Bull.Acad.Polon.Sci.,1954,2:305-308(in German).
[11]Kropina,V.K,On projective two-dimensional Finsler spaces with special metric,Tridy Sem.Vector.Tensor.Anal.,1961,11:277.
[12]Matsumoto,M.,On C-reducible Finsler spaces,Tensor(N.S.),1972,24:29-37.
[13]Matsumoto,M.,Theory of Finsler space with(α,β)-metric,Reports on Mathematical Physics,1992,31(1):43-83.
[14]Matsumoto,M.,A slope of a moutain is a Finsler surface with respect to a time measure,J.Math.Kyoto Univ.,1989,29(1):17-25.
[15]Matsumoto,M.,Projectively flat Finsler spaces with(α,β)metric,Rep.Math.Phys.,1991,30(1):15-20.
[16]Mo,X.H.and Zhou,L.F.,A class of Finsler metrics with bounded Cartan torsion,Canad.Math.Bull.,2010,53(1):122-132.
[17]Nash,J.,The immedding problem for Riemannian manifolds,Ann.Math.,1956,63(1):20-63.
[18]Narasimhamurthy,S.K.,Latha Kumari,G.N.and Bagewadi,C.S.,Projectively flat Kropina metric with K=0,Appl.Math.Sci.,2011,5(12):585-593.
[19]Shen,Y.B.and Zhang,X.L.,On Einstein Kropina metrics,Diff.Geom.Appl.,2013,31(1):80-92.
[20]Shen,Z.M.,On Finsler geometry of submanifolds,Math.Ann.,1998,311(3):549-576.
[21]Shen,Z.M.,On R-quadratic Finsler spaces,Publ.Math.Debrecen,2001,58(1/2):263-274.
[22]Shen,Z.M.,Landsberg curvature,S-curvature and Riemann curvature,In:A Sampler of Finsler Geometry,Math.Sci.Res.Inst.Publ.,Vol.50,Cambridge:Cambridge Univ.Press,2004.
[23]Shen,Z.M.,On a class of Landsberg metrics in Finsler Geometry,Canad.J.Math.,2009,61(6):1357-1374.
[24]Yoshikawa,R.and Okubo,K.,Kropina spaces of constant curvature,Tensor(N.S.),2007,68(2):190-203.
[25]Yoshikawa,R.and Okubo,K.,Constant curvature conditions for Kropina spaces,Balkan J.Geom.Appl.,2012,17(1):115-124.