On the Riemannian and Einstein-Weyl Geometry in Theory of the Second Order Ordinary Differential Equations

Details On the Riemannian and Einstein-Weyl Geometry in Theory of the Second Order Ordinary Differential Equations On the Riemannian and Einstein-Weyl Geometry in Theory of the Second Order Ordinary Differential Equations

2001-04-28

arxiv.org/abs/gr-qc/0104095v1

Bul.Acad.Sti.Rep.Moldova (Fiz.Teh.) 3 (1999) 95-102

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, Latex

Scientific paper

Some properties of the 4-dim Riemannian spaces with metrics $$ ds^2=2(za_3-ta_4)dx^2+4(za_2-ta_3)dxdy+2(za_1-ta_2)dy^2+2dxdz+2dydt $$ associated with the second order nonlinear differential equations $$ y''+a_{1}(x,y){y'}^3+3a_{2}(x,y){y'}^2+3a_{3}(x,y)y'+a_{4}(x,y)=0 $$ with arbitrary coefficients $a_{i}(x,y)$ and 3-dim Einstein-Weyl spaces connected with dual equations $$ b''=g(a,b,b') $$ where the function $g(a,b,b')$ satisfied the partial differential equation $$ g_{aacc}+2cg_{abcc}+2gg_{accc}+c^2g_{bbcc}+2cgg_{bccc}+ g^2g_{cccc}+(g_a+cg_b)g_{ccc}-4g_{abc}- $$ $$ -4cg_{bbc} -cg_{c}g_{bcc}- 3gg_{bcc}-g_cg_{acc}+ 4g_cg_{bc}-3g_bg_{cc}+6g_{bb} =0 $$ are considered.

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