# Department of Mathematical Modelling and Numerical Analysis

## Andreev, Andrey

### Associate Professor, PhD, Associate Member

Numerical methods, Approximation theory, Data compression.

## Bazhlekov, Ivan

### Associate Professor, PhD

Mathematical modeling and computer simulation of multiphase flows with heat and mass transfer and bioprocesses.

## Borisov, Milen

### Senior Assistant Professor, PhD

Mathematical modeling of biological processes, Bifurcation analysis of dynamical system, Computer simulations of biological models

## Dimitrova, Neli

### Professor, PhD, Associate Member

Dynamical systems, Applications in mathematical modeling of bioprocesses, Computer-oriented numerical analysis.

## Dimova, Milena

### Associate Professor, PhD

Numerical methods for nonlinear partial differential equations – finite element and finite difference methods; algorithms and scientific software; Numerical analysis of nonlinear and spectral problems in hydrodynamics, quantum mechanics, nonlinear heat - conducting medium; Numerical investigation of solutions to generalized Boussinesq’s type equations; Global solvability or finite time blow up of Cauchy problem for generalized Boussinesq’s type equations.

## Draganov, Borislav

### Associate Professor, PhD

I carry out research mostly in the field of approximation theory. In the recent years I have been particularly interested in establishing a precise and useful characterization of the rate of convergence of various approximation processes generated either by linear operators or by non-linear as best (weighted) approximation by algebraic or trigonometric polynomials. My research also includes interpolation, (generalized) Fourier expansions, orthogonal polynomials, quadrature formulae, multipliers, application of Fourier analysis in approximation theory, and functional analysis.

## Georgiev, Ivan

### Associate Professor, PhD

Numerical solution of partial differential equations, Finite elements, Multilevel methods.

## Georgieva, Irina

### Associate Professor, PhD, Department Secretary

Numerical methods; Approximation theory; Spline-functions; Interpolation and approximation by radon projection data; Aproximating harmonic functions through Radon projections; Low rank approximations.

## Harizanov, Stanislav

### Associate Professor, PhD

Nonlinear Subdivision; Normal multi-scale transforms for curves and surfaces; Image and Signal Processing; Mathematical Modeling; Constrained Optimization; Primal-Dual Algorithms and their Parallel implementation.

## Iliev, Iliya D.

### Professor, PhD, Associate Member

Differential Equations, Dynamical Systems, Mathematical Physics.

## Ilieva, Nevena

### Professor, PhD

Fields of interest/ expertise:

• Theoretical and mathematical physics; quantum field theory; field-theoretical methods in condensed-matter theory;

• Algorithms for large system modelling and analysis;

• Mathematical biology: biocomputing; modelling of biomolecular structure and dynamics; immunoinformatics; protein folding

• High-performance computing

• History and philosophy of physics

## Ivanov, Kamen

### Professor, D.Sc., Department Head

My mathematical work is primary connected with the approximation theory. Other areas of interest are varying fields of analysis, analytic number theory, numerical methods and mathematical modeling. I am also interested in the theory and application of the electoral systems, election conduct and observation.

## Kolkovska, Natalia

### Professor, PhD, Associate Member

My scientific interests are in the field of numerical methods for solving differential and integral equations, in particular - the methods of finite differences, finite elements, boundary elements, as well as their application to the mathematical models of physical and industrial processes.

## Krastanov, Mikhail

### Professor, D.Sc.

Application of geometrical methods in control theory, Mathematical applications in biosciences, economic and etc.

## Kyurkchiev, Nikolay

### Professor, PhD, Associate Member

Numerical methods, Approximation theory.

## Markov, Svetoslav

### Professor, D.Sc., Associate Member

Interval analysis, Numerical methods with verification, Algebraic properties of intervals, errors, convex bodies, stochastic numbers etc., Hausdorff approximations, Mathematical modeling in biology, enzyme kinetics, microbial growth, synaptic transmission, special relativity.

## Ndairou, Faiçal

### post-doctoral researcher, PhD

mathematical biology, optimal control, fractional calculus

## Popova, Evgenija

### Professor, PhD

Numerical and algebraic methods for problems with uncertain (interval) data; Linear algebraic systems involving (non)linear dependencies between interval parameters: methods, software tools, applications; Algebraic extensions (http://www.math.bas.bg/~epopova/directed.html) of the classical interval space; Software tools for problems with uncertain data and/or result verification; Interaction between computer algebra and interval computations; Dynamic and interactive web-accessible mathematical computations and graphics (webComputing) (http://cose.math.bas.bg/webComputing/); Standards for floating-point arithmetic and computer interval arithmetic; Statistical data analysis.

## Rashkov, Peter

### Associate Professor, PhD

Mathematical modelling with applications in biology and onclogy, dynamical systems and applications, numerical analysis, harmonic analysis.

## Souvandjieva, Vladimira

### Mathematician

Dynamical systems, immunology, ecology

## Vucheva, Veselina

### Assistant Professor, PhD

## Zikatanov, Ludmil

### Professor, PhD, Associate Member

Numerical Analysis and Applications

## Zlateva, Plamena

### Associate Professor, PhD

Mathematical modeling and analysis of bioprocesses; mathematical applications in management of nonlinear systems, economics, risk assessment, etc. Mathematical biology, modeling of infectious and chronic diseases, population dynamics.