Many mathematical models of applied problems require investigations of this type of equations.
Simultaneously, many mathematical models have been proposed to describe and predict the process of NF.
Many mathematical models for the design and/or operation of CCHP systems have been developed.
Reaction diffusion systems arise in many mathematical models and thus this study has many applicabilities.
Since then many mathematical models with free boundary have been developed to research biological population [16 19].
Many mathematical models have been developed to describe short-term plasticity over the past 20 years [18, 19, 21, 22].
Many mathematical models starting from fluid dynamics to the problems in mathematical biology are modeled by singularly perturbed problems.
Up to date, many mathematical models have been investigated to understand the mechanism of real world phenomena.
Many mathematical models have been formulated to describe the dynamical interaction between zooplankton and phytoplankton [6 10].
Difference equations appear in many mathematical models in diverse fields, such as economy, biology, physics, and finance; see [1 3].
Many mathematical models describing complex (bio- chemical reaction networks with a high level of detail are availabio- chemicaltereaction
