%0 Journal Article %T Abramovsky¡ªGribov¡ªKancheli Theorem in the Physics of Black Holes %J Physics | An Open Access Journal from MDPI %D 2019 %R https://doi.org/10.3390/physics1020020 %X The proof of the Abramovsky¡ªGribov¡ªKancheli (AGK) theorem for black hole physics is given. Based on the AGK relations, a formula for the luminosity of a black hole as a function of the mass of the black hole is derived. The correspondence to experimental data is considered. It is shown that the black holes of the galaxies NGC3842 and NGC4889 do not differ from those of the other galaxies. View Full-Tex %U https://www.mdpi.com/2624-8174/1/2/20