THE ZEROS DISTRIBUTION OF SOLUTIONS OF HIGHER ORDER DIFFERENTIAL EQUATIONS IN AN ANGULAR DOMAIN

On the Number of Zeros of Bounded Nonoscillatory Solutions to Higher-order Nonlinear Ordinary Differential Equations

Growth of Solutions to Higher Order Linear Homogeneous Differential Equations in Angular Domains

In this article, we discuss the growth of meromorphic solutions to higher order homogeneous differential equations in some angular domains, instead of the whole complex plane.

On the Zero Distribution of Solutions of Second Order Linear Differential Equations in the Complex Domain

Let f(z) 6≡ 0 be a solution of f ′′ + P (z)f = 0, where P (z) is a polynomial. Then the set of accumulation lines of zero-sequence is a subset of the Borel directions of f(z). Let f1 and f2 be two linearly independent solutions of f ′′ + P (z)f = 0, where P (z) is a polynomial of degree n and set E = f1f2. Then, for every accumulation line arg z = θ of zero-sequence of E, there is another accum...

the survey of the virtual higher education in iran and the ways of its development and improvement

این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.

Oscillation of solutions of some higher order linear differential equations

We shall assume that reader is familiar with the fundamental results and the standard notations of the Nevanlinna value distribution theory of meromorphic functions(see [11,14]). In addition, we will use the notation σ(f) to denote the order of growth of entire function f(z), σ2(f) to denote the hyper-order of f(z), λ(f)(λ2(f)) to denote the exponent(hyper-exponent) of convergence of the zero-s...