173 research outputs found

    Foliations of Tangent Bundle in a Finsler Manifold

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    In this paper, a frame is introduced on tangent bundle of a Finsler manifold in a manner that it makes some simplicity to study the properties of the natural foliations in tangent bundle. Moreover, we show that the indicatrix bundle of a Finsler manifold with lifted sasaki metric and natural almost complex structure on tangent bundle cannot be a sasakian manifold.Comment: 11 pages. arXiv admin note: substantial text overlap with arXiv:1106.482

    The Warped Product of Hamiltonian Spaces

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    In this paper, the geometric properties of warped product Hamiltonian spaces are studied. It is shown there is a close geometrical relation between a warped product Hamiltonian space and its base Hamiltonian manifolds. For example, it is proved that for nonconstant warped function f, the Sasaki lifted metric G of Hamiltonian warped product space is bundle-like for its vertical foliation if and only if based Hamiltonian spaces are pseudo-Riemannian manifolds.Π˜Π·ΡƒΡ‡Π΅Π½Ρ‹ гСомСтричСскиС свойства Π³Π°ΠΌΠΈΠ»ΡŒΡ‚ΠΎΠ½ΠΎΠ²Ρ‹Ρ… пространств Π² Π²ΠΈΠ΄Π΅ искривлСнных ΠΏΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈΠΉ. Показано, Ρ‡Ρ‚ΠΎ ΠΌΠ΅ΠΆΠ΄Ρƒ Π³Π°ΠΌΠΈΠ»ΡŒΡ‚ΠΎΠ½ΠΎΠ²Ρ‹ΠΌ пространством - искривлСнным ΠΏΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΈΠ΅ΠΌ ΠΈ Π΅Π³ΠΎ Π±Π°Π·ΠΎΠ²Ρ‹ΠΌΠΈ Π³Π°ΠΌΠΈΠ»ΡŒΡ‚ΠΎΠ½ΠΎΠ²Ρ‹ΠΌΠΈ многообразиями сущСствуСт тСсная гСомСтричСская связь. НапримСр, Π΄ΠΎΠΊΠ°Π·Π°Π½ΠΎ, Ρ‡Ρ‚ΠΎ для нСпостоянной ΠΈΡΠΊΡ€ΠΈΠ²Π»ΡΡŽΡ‰Π΅ΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ f ΠΌΠ΅Ρ‚Ρ€ΠΈΠΊΠ° Басаки G для Π³Π°ΠΌΠΈΠ»ΡŒΡ‚ΠΎΠ½ΠΎΠ²Π° пространства - искривлСнного произвСдСния являСтся расслоСнной ΠΌΠ΅Ρ‚Ρ€ΠΈΠΊΠΎΠΉ ΠΏΠΎ ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΡŽ ΠΊ Π΅Π΅ Π²Π΅Ρ€Ρ‚ΠΈΠΊΠ°Π»ΡŒΠ½ΠΎΠΌΡƒ слоСнию Ρ‚ΠΎΠ³Π΄Π° ΠΈ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ Ρ‚ΠΎΠ³Π΄Π°, ΠΊΠΎΠ³Π΄Π° Π±Π°Π·ΠΎΠ²Ρ‹Π΅ Π³Π°ΠΌΠΈΠ»ΡŒΡ‚ΠΎΠ½ΠΎΠ²Ρ‹ пространства ΡΠ²Π»ΡΡŽΡ‚ΡΡ псСвдо-Ρ€ΠΈΠΌΠ°Π½ΠΎΠ²Ρ‹ΠΌΠΈ многообразиями.The first author would like to thank the INSF for the partially support on the grant number 92006616
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