Assistant Professor and Head of the Department
I have received my Ph. D. degree in Applied Mathematics from the University of Calcutta in 2010 and joined Presidency University as Assistant Professor of Mathematics in January' 2013. My research areas are mainly dealt with "Qualitative Theory of Differential Equations and Nonlinear Dynamics in Population Biology" .
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)
I did M.sc. in Applied mathematics from the University of Calcutta. After getting the degree 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). I was then appointed as lecturer in Mathematics in West Bengal Education Service in 2007 and have been in teaching profession since then. I was awarded the Ph. D. degree in 2010 and finally, I joined Presidency University in January, 2013.
Research / Administrative Experience+
My research interests includes the following areas:
Formulation and development of Mathematical Models of Ecological systems and to investigate different qualitative results, like stability (local & global), persistency, change of stability through change of parameters, bifurcations (Hopf, Bogdanov-Takens, homoclinic, saddle-node), stability of periodic solutions , stability in presence of environmental fluctuations, modelling Allee effect of such model systems.
Bifurcation theory of vector fields.
Normal form theory and study of delay differential equations.
Teaching / Other Experience+
I teach the following subjects in UG and PG level:
Probability Theory and Statistics.
Qualitative Theory of Differential Equations.
Post Graduate Supervision+
Associated as a Reviewer for Mathematical Reviews, Published By American Mathematical Society.
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., Sarwardi, S., Saha, T. & Mandal, P.K. (2011): "Mean Square Stability in a Modified Leslie Gower and Holling Type II Predator-Prey Model" , J. Applied Mathematics & Informatics 29(3-4) 781-802.
9. 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.
10. 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.
86/1 College Street, Kolkata - 700073,
West Bengal, India
Email: tapan.maths at presiuniv.ac.in