Tapan Saha

Assistant Professor

Ph. D. Applied Mathematics (University of Calcutta, 2010)

M.Sc.  Applied Mathematics (University of Calcutta, 2002)

B.Sc. with Mathematics Major (Berhampore K.N. College, 2000)

After completing my Masters I joined the Department of Applied Mathematics, University of Calcutta as CSIR-UGC junior research fellow to persue my doctoral work under the supervision of Prof. C.G. Chakrabarti (S.N. Bose  Professor of Theoretical Physics, now retired). During my doctoral research I got my first appointment as lecturer at Scottish Church College, Kolkata. In 2007, I was appointed as lecturer at Haldia Government College under WBES. I was awarded the Ph. D. degree in 2010 and finally, I joined Presidency University in January, 2013.

Research Interests:

Predator Prey Models, Stability & Bifurcation Theory of Vector Fields,
Center and Cyclicity Problems of Planar Polynomial Vector Fields. Normal form theory and study of delay differential equations.

I teach the following subjects at the UG and PG level in Mathematics:

Probability Theory and Statistics.

Real Analysis.

Copmplex Analysis.

Differential Equations and Dynamical Systems.

Associated as a Reviewer for Mathematical Reviews, Published By American Mathematical Society.

Selected Publications:

1. Saha, T. and Bandyopadhyay, M.(2008): "Dynamical Analysis of a Delayed Ratio-Dependent Prey Predator Model within Fluctuating Environment" , Applied Mathematics & Computations (196) 458-478.

2. Saha, T. and Bandyopadhyay, M.(2008): "Dynamical Analysis of Toxin Producing Phytoplankton-Zooplankton Interactions" , Nonlinear Analysis: Real World Applications 10(1) 314-332.

3. Saha, T. and Bandyopadhyay, M.(2008): "Effect of Small Time Delay in a Predator-Prey Model within Random Environment" , Differential Equations and Dynamical Systems 16(3) 225-250.

4. Bandyopadhyay, M., Saha, T. and Pal, R. (2008): "Deterministic and Stochastic Analysis of a Delayed Allelopathic Phytoplankton Model within Fluctuating Environment" , Nonlinear Analysis: Hybrid Systems 2(3) 958-970.

5. Saha, T. and Bandyopadhyay, M.(2008): "Multiple Scale Analysis of a Delayed Predator-Prey Model within Random Environment" , J. Applied Mathematics & Informatics (26)1191-1205.

6. Saha, T. and Chakrabarti, C.G.(2009): "Dynamical Analysis of a Delayed Ratio-Dependent Holling-Tanner Predator-Prey Model" ,  J. Mathematical Analysis and Applications(358)389-402.

7. Saha, T. and Chakrabarti, C.G.(2011): "Stochastic Analysis of Prey Predator Model with Stage Structure for Prey." , J. Applied Mathematics & Computing 35(1-2) 195-209.

8. Pal, P.J., Saha, T., Sen, M. & Banerjee, M. (2012): "A Delayed Predator-Prey Model with Strong Allee Effect in Prey Population Growth" , Nonlinear Dynamics (68)23-42.

9. Pal, P.J., Haque, M., Saha, T. & Ryu, K.(2013): "A Predatory Commensalism Model in a Deterministic and Stochastic Environment" , Dynamics of Continuous, Discrete and Impulsive Systems 20(1) 1-32.

10. Pal, P.J., Saha, T. (2015): "Qualitative analysis of a predator prey system with
double Allee effect in Prey" , Chaos, Solitons & Fractals (73) 36-63.