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Nikolai Kutev

Bulgarian Academy of Sciences

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Open Mathematics | 2013

Hardy-type inequality with double singular kernels

Alexander Fabricant; Nikolai Kutev; Tsviatko Rangelov

A Hardy-type inequality with singular kernels at zero and on the boundary ∂Ω is proved. Sharpness of the inequality is obtained for Ω= B1(0).

Journal of Mathematical Analysis and Applications | 1988

Nontrivial solutions for the equations of Monge-Ampere type

Nikolai Kutev

Nonlinear Analysis-theory Methods & Applications | 1989

On the solvability of the Dirichlet problem for degenerate equations of monge-Ampere type

Nikolai Kutev

Filomat | 2016

Revised Concavity Method and Application to Klein-Gordon Equation

Milena Dimova; Natalia Kolkovska; Nikolai Kutev

Nonlinear Analysis-theory Methods & Applications | 2015

Jump discontinuous viscosity solutions to second order degenerate elliptic equations

G. Chobanov; Bernd Kawohl; Nikolai Kutev

Mediterranean Journal of Mathematics | 2012

Interior Boundaries for Degenerate Elliptic Equations and Viscosity Solutions

Georgi Chobanov; Nikolai Kutev

Journal of Mathematical Analysis and Applications | 2009

Positive solutions of the generalized Emden-Fowler equation in Holder spaces

Julia Chaparova; Nikolai Kutev

Mediterranean Journal of Mathematics | 2017

Sharp Hardy Inequalities in Star-shaped Domains with Double Singular Kernels

Alexander Fabricant; Nikolai Kutev; Tsviatko Rangelov

Biomath Communications | 2016

Stability of Solitary Waves in Biomembranes and Nerves

Nikolai Kutev; Natalia Kolkovska; Milena Dimova

Biomath Communications | 2015

Stability and Instability of Improved Heimburg-Jackson Model to Nerve Pulse Propagation

Nikolai Kutev; Natalia Kolkovska; Milena Dimova

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Alexander Fabricant

Bulgarian Academy of Sciences

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Milena Dimova

Bulgarian Academy of Sciences

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Natalia Kolkovska

Bulgarian Academy of Sciences

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Tsviatko Rangelov

Bulgarian Academy of Sciences

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G. Chobanov

Bulgarian Academy of Sciences

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Georgi Chobanov

Bulgarian Academy of Sciences

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Bernd Kawohl

University of Cologne

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