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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Vektorinių sluoksniuočių tenzorinės struktūros / Tensor structures of vector bundles

Loginova, Galina 22 June 2006 (has links)
Vector bundles , which basic space is smooth n-dimensional space with affine connection, are exploring in this paper. It was proved that linear connection of such bundle defines affine connection, there were found curvature objects of these connections. It was also proved that linear connection induces inside almost product’s structure in bundle , there were explored integrable conditions of this structure and defined criterions on affine connections that are associated with these structures.
2

Vektorinių sluoksniuočių tęsinių sietys / Linear connection of extension of vector bundle

Čiburaitė, Irena 23 June 2006 (has links)
The vector bundles with the basic structure space with affine connection. It is shown that in the present bundles the linear inducts the affine connection, and the curvature of the objects of the present connection is traced. Having defined the concept of the first differential extension of the vector bundles, an indication is made that the linear connection of vector bundles inducts the elongated linear connection of space and linear co-connection, expression form of the linear co-connection components and their interrelation. There are derived commutative formulas of the inducted connection and forms of its components of curvature objects.
3

Koliestinių sluoksniuočių homogeninės beveik kompleksinės struktūros / Homogeneous almost complex structure of contangent bundle

Žilėnaitė, Judita 13 August 2012 (has links)
Darbe nagrinėjamos koliestinės sluoksniuotės su apibrėžta metrika. Parodyta kaip šių erdvių metrinis tenzorius indukuoja tiesinę ir afiniąją sietį, surasti šių siečių kreivumo objektai. Įrodyta, kad šiose sluoksniuotėse egzistuoja vidinės homogeninės beveik kompleksinės struktūros. Nustatytos šių struktūrų integruojamumo sąlygos, surastos sąlygos, kad šį struktūra būtų Kelerio tipo. / In this paper cotangent bundle with determinate metrics are analysed. It is shown how metrical tensor of those spaces induces linear and affine connections, also objects of those connections‘ curvature are found. It is proved that intrinsic homogeneous almost complex structure exists in that bundle. Conditions of those structure integration are identified as well as conditions for this structure to be Kahler‘s type are found.

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