مهدی نجفی خواه
دانشگاه علم و صنعت ایران
[ 1 ] - دورنمایی از خلاقیت در فرآیند آموزش ریاضی
خلاقیت ریاضی اغلب یک پدیده ناشناخته محسوب میشود. به نظر میرسد بیشتر دانشمندان علاقهمند نیستند فرآیندهای تفکر خود را که موجب خلق و ابداع میشود توصیف و تحلیل نمایند. یکی از اهداف مقاله حاضر، که متکی بر یافتههای تحقیقی معاصر میباشد، آن است که با اشاره به بعضی از تعاریف و ویژگیهای خلاقیت ریاضی، به توصیف و تحلیل فرآیندهای تفکر ریاضیدانان در حین خلق ریاضیات، بپردازد. در این راستا، یک مدل چهار...
[ 2 ] - Mathematical modeling of optimized SIRS epidemic model and some dynamical behavior of the solution
In this paper, a generalized mathematical model of spread of infectious disease as SIRS epidemic model is considered as a nonlinear system of differential equation. We prove that for positive initial conditions the resulting equivalence system has positive solution and under some hypothesis, this system with initial positive condition, has a positive $T$-periodic solution which is globally asym...
[ 3 ] - The Lie Algebra of Smooth Sections of a T-bundle
In this article, we generalize the concept of the Lie algebra of vector fields to the set of smooth sections of a T-bundle which is by definition a canonical generalization of the concept of a tangent bundle. We define a Lie bracket multiplication on this set so that it becomes a Lie algebra. In the particular case of tangent bundles this Lie algebra coincides with the Lie algebra of vector fie...
[ 4 ] - First Integrals of a Special System of Odes (TECHNICAL NOTE)
In this paper we suggest a method to calculate the first integrals of a special system of the first order of differential equations. Then we use the method for finding the solutions of some differential equations such as, the differential equation of RLC circuit.
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