This study contains the solution of the dark matter mystery of spiral
galaxies by using the space of four distance dimensions x, y, z, x', in which x' is the fourth distance dimension. The calculation
of galaxy rotation has been presented in the space of four dimensions by using
two dimensional section x, x' and three dimensional section x, y, x'. The four dimensional mass M which generates the main gravitation
field of galaxy is located at the fourth dimension at the distance x' = X' and other dimensions are zero x = 0, y = 0, z = 0. The method to calculate the speed
distribution curve of four dimensional mass V_{M}:
the speed distribution curve V_{M}is calculated by using the equation in which the gravitational force is
equal to the centrifugal force of rotation. The solution of this equation yields
the speed distribution component V_{M} of the four dimensional
mass M and the value of the mass M. In the publication [1] has been presented rotational speed distributions curves of the galaxy
NGC 3198. The speed distribution curve of galactic halo in that publication
corresponds to the speed distribution curve V_{M} of four dimensional mass M of this
study. In order to find out how well this four dimensional model functions, the
speed distribution curve V_{M} of four dimensional mass M has been
calculated by using two

References

[1]

Van Albada, T.S., Bahcall, J.N., Begeman, K. and Sanscisi, R. (1985) Distribution of Dark Matter in the Spiral Galaxy NGC 3198. The Astrophysical Journal, 295, 305-313. https://doi.org/10.1086/163375

[2]

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[3]

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