Tuesday, September 1st 
16:00–16:30 
Registration 
16:3016:45 
OPENING 
17:0018:00 
SESSION 1 
17:0018:00 
Invited Plenary Talk, Petar Popivanov, Microlocal nonsolvability and nonhypoellipticity of linear PDO 
18:30 
Welcome party 
Wednesday, September 2nd 
10:0011:00 
SESSION 2 
10:0011:00 
Invited Plenary Talk, Elena Litsyn, Stabilizing Control of a Hysteresis Cellular Nonlinear Network Model 
11:0011:30 
Coffee Break 
11:3012:30 
SESSION 3 Applications in Neuroscience 
11:3012:00 
Valery Covachev, Zlatinka Covacheva, Existence of periodic solutions for a modified Elman neural network 
12:0012:30 
Angela Slavova, Edge of chaos in polynomial predatorprey CNN Model 
12:3014:00 
Lunch Break 
14:0015:00 
SESSION 4 Nonlinear PDEs 
14:0014:30 
Zlatinka Dimitrova, Nikolay Vitanov, Simple Equations Method (SEsM) and some of its particular cases 
14:3015:00 
Nikolay Vitanov, Simple Equations Method (SEsM): relation to Hirota's method and to IST method 
15:0015:30 
Coffee Break 
15:3018:00 
SESSION 5: Applications in Financial Mathematics 
15:3016:00 
Elena Nikolova, Denislav Serbezov, Nikolay Vitanov, Chaos in a generalized system for modeling dynamics of three competing economic sectors 
16:00 16:30 
Pavel Stoynov, Lévy processes for financial modelling 
17:3018:00 
Pavel Stoynov, Some computational methods in finance

Thursday, September 3rd 
9:0010:00 
SESSION 6 
9:0010:00 
Invited Plenary Talk, Vladimir Georgiev, Ground states for BerisEdward model of liquid crystals 
10:0010:30 
Coffee Break 
10:3012:00 
SESSION 7: Applications of Nonlinear PDEs 
10:3011:00 
Ivan Jordanov, Nikolay Vitanov, Elena Nikolova, Nonlinear travelling waves in a generalized model of interacting high density populations 
11:0011:30 
Elena Nikolova, Mila ChilikovaLubomirova, Nikolay Vitanov, Exact solutions of a generalized SawadaKotera equation modeling nonlinear long waves in several natural phenomena 
11:3012:00 
Aleksander Stefanov, Ivan Chavdarov, Dimitar Nedanovski, Detailed dynamical model of a simple 3D printed walking Robot 
12:0014:00 
Lunch Break 
14:0015:30 
SESSION 8: Applications in Neurosience 
14:0014:30 
Atanaska Georgieva, Iva Naydenova, Adomian decomposition method and homotopy perturbation method in solving twodimensional VolterraFredholm fuzzy integral equations 
14:3015:00 
Atanaska Georgieva, Mira Spasova, Solving partial fuzzy integrodifferential equations using fuzzy Sumudu transform method 
15:0015:30 
D. Ditchev, Z. Petrova, On the simultaneous teaching of Mathematics and new programming language in master degree 
15:3016:00 
Coffee Break 
16:0018:00 
SESSION 9 Applications in Mechanics 
16:0016:30 
Tsviatko Rangelov, Petia Dineva, Dynamic fracture of two nanocracks in graded elastic halfplane 
16:3017:00 
Yoshihiro Mochimaru, Estimation of wood check 
17:0017:30 
Nikolai Kutev, Tsviatko Rangelov, Sharp Hardy inequalities in an exterior of a ball 
17:3018:00 
Tsvetelina Ivanova, Nikolay Vitanov, Analysis of the dynamics of substances in nodes of a channel of a network 
19:00 
Official Dinner 
Friday, September 4th (online presentations) 
9:0011:00 
SESSION 10: Applications in Financial Mathematics 
9:009:30 
Vyara Kostadinova, Ivan Georgiev, Vesela Mihova, Velizar Pavlov, An Application of Markov Chains in Stock Price Prediction and Risk Portfolio Optimization 
9:3010:00 
Simona Georgieva, Velizar Pavlov, Claim Reserving Estimation by Using the Chain Ladder Method 
10:0010:30 
Ivan Georgiev, Evelina Veleva, Emilia Pancheva, The Influence of Social Distancing on The Change of Economic Losses 
10:3011:00 
Maya Markova, Credit Card Approval Model: An Application Of Deep Neural Networks 
11:0013:00 
SESSION 11: Applications in Fractional Analysis 
11:0011:30 
S. Hristova, T. Donchev, A. Georgieva, Finite time stability of systems of RiemannLiouville fractional differential equations with a constant delay 
11:3012:00 
Snezhana Hristova, Cemil Tunc, On the stability properties of retarded Volterra integrofractional differential equations with Caputo derivative 
12:0012:30 
Snezhana Hristova, Antonia Dobreva, Krasimira Ivanova, Practical stability of differential equations with supremum and noninstantaneous impulses 
12:3013:00 
Tzanko Donchev, Semilinear RiemannLiouville evolution inclusions with causal operators 
13:0014:30 
SESSION 12: Applications in Mathematical Biology 
13:0013:30 
Nikolay Kyurkchiev, Anton Iliev, Asen Rahnev, Todorka Terzieva, On the Extended HalfLogistic model by H. Bakouch with "polynomial variable transfer". Application to approximate the specific "Data BG COVID19" 
13:3014:00 
Anna Malinova, Olga Rahneva, Nikolay Pavlov,Angel Golev, Vesselin Kyurkchiev, A look at the Garima cumulative distribution function and related c.d.f. 
14:0014:30 
Antonia Dobreva, Finite Time Stability for Neural Networks with Supremum 
14:3018:30 
SESSION 14: Applications in Mathematical Physics 
14:3015:00 
V. Vucheva, N. Kolkovska, High Order Symplectic Finite Difference Scheme for Double Dispersion Equation 
15:0015:30 
Kulikov A., Kulikov D., Global attractor of periodic boundary value problem of the nonlocal GinzburgLandau equation 
15:3016:00 
Daniele Barbera,Vladimir Georgiev, Least energy solutions for a model of liquid crystals 
16:0016:30 
Velizara Pencheva, Ivan Georgiev, Asen Asenov, Empirical evaluation of passenger waiting time in public transport by using the Monte Caro method sectors 
16:3017:00 
Sedef Karakilic, Setenay Akduman, On the eigenvalues of a polyharmonic matrix operator near diffraction planes 
17:0017:30 
Sevdalin Tsvetanov, Daniela Marinova, Finding the k Shortest Paths 
17:3018:00 
Sevdalin Tsvetanov, Daniela Marinova, Applications of k shortest paths algorithm in vision recognition 
18:0018:30 
Mirko Tarulli, Local and global spacetime integrability for the inhomogeneous heat equation 