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- National University of UzbekistanUZ35 papers
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12 papers · 1 filter
Quantum effects on the black hole shadow and deflection angle in presence of plasma
Farruh Atamurotov, Mubasher Jamil, Kimet Jusufi
In this paper, optical properties of renormalization group improved (RGI) Schwarzschild black hole (BH) are investigated in plasma medium. Starting from the equations of motions in…
A family of non-Volterra quadratic operators corresponding to permutations
U. U. Jamilov
In the present paper we consider a family of non-Volterra quadratic stochastic operators depending on a parameter and study their trajectory behaviors. We find all fixed points…
Shadow and quasinormal modes of the Kerr-Newman-Kiselev-Letelier black hole
Farruh Atamurotov, Ibrar Hussain, G. Mustafa +1
We investigate the null geodesics and the shadow cast by the Kerr-Newman-Kiselev-Letelier (KNKL) black hole for the equation of state parameter and for different values…
Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field
Ghulam Mustafa, Farruh Atamurotov, Ibrar Hussain +2
In this work, we observe that in the presence of the string cloud parameter and the quintessence parameter , with the equation of state parameter the radius o…
Fixed points of an infinite dimensional operator related to Gibbs measures
U. R. Olimov, U. A. Rozikov
We describe fixed points of an infinite dimensional non-linear operator related to a hard core (HC) model with a countable set of spin values on the Cayley tree. This…
A HC model with countable set of spin values: uncountable set of Gibbs measures
U. A. Rozikov, F. H. Haydarov
We consider a hard core (HC) model with a countable set of spin values on the Cayley tree. This model is defined by a countable set of parameters $λ_{i}>0, i \in \math…