Entire functions admitting a special lower bound

1990 ◽  
Vol 48 (5) ◽  
pp. 613-615
Author(s):  
B. G. Freidin
Keyword(s):  
Lower Bound ◽  
Entire Functions

scholarly journals The Hausdorff dimension of Julia sets of entire functions

1991 ◽  
Vol 11 (4) ◽  
pp. 769-777 ◽  
Author(s):  
Gwyneth M. Stallard
Keyword(s):  
Lower Bound ◽  
Hausdorff Dimension ◽  
Entire Functions ◽  
Julia Sets ◽  
Hausdorff Dimensions ◽  
Transcendental Entire Functions

AbstractWe construct a set of transcendental entire functions such that the Hausdorff dimensions of the Julia sets of these functions have greatest lower bound equal to one.

scholarly journals On transcendental directions of entire solutions of linear differential equations

2021 ◽  
Vol 7 (1) ◽  
pp. 276-287
Author(s):  
Zheng Wang ◽  
◽  
Zhi Gang Huang
Keyword(s):  
Lower Bound ◽  
Differential Equations ◽  
Lower Order ◽  
Difference Operator ◽  
Entire Functions ◽  
Linear Differential Equations ◽  
Entire Solutions ◽  
The Common ◽  
Linear Differential ◽  
Finite Lower Order

<abstract><p>This paper is devoted to studying the transcendental directions of entire solutions of $ f^{(n)}+A_{n-1}f^{(n-1)}+...+A_0f = 0 $, where $ n(\geq 2) $ is an integer and $ A_i(z)(i = 0, 1, ..., n-1) $ are entire functions of finite lower order. With some additional conditions, the set of common transcendental directions of non-trivial solutions, their derivatives and their primitives must have a definite range of measure. Moreover, we obtain the lower bound of the measure of the set defined by the common transcendental directions of Jackson difference operator of non-trivial solutions.</p></abstract>

scholarly journals On the Growth of Solutions of a Class of Higher Order Linear Differential Equations with Extremal Coefficients

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jianren Long ◽  
Chunhui Qiu ◽  
Pengcheng Wu
Keyword(s):  
Lower Bound ◽  
Differential Equations ◽  
Infinite Order ◽  
Entire Functions ◽  
Higher Order ◽  
Linear Differential Equations ◽  
Order Linear ◽  
Linear Differential ◽  
Growth Of Solutions

We consider that the linear differential equationsf(k)+Ak-1(z)f(k-1)+⋯+A1(z)f′+A0(z)f=0, whereAj  (j=0,1,…,k-1), are entire functions. Assume that there existsl∈{1,2,…,k-1}, such thatAlis extremal forYang'sinequality; then we will give some conditions on other coefficients which can guarantee that every solutionf(≢0)of the equation is of infinite order. More specifically, we estimate the lower bound of hyperorder offif every solutionf(≢0)of the equation is of infinite order.

The least distance between extremums and minimal period of solutions to autonomous vector differential equations

2019 ◽  
Vol 485 (2) ◽  
pp. 142-144
Author(s):  
A. A. Zevin
Keyword(s):  
Lower Bound ◽  
Differential Equations ◽  
Periodic Solutions ◽  
Lipschitz Constant ◽  
Minimal Period ◽  
Arbitrary Vector ◽  
Vector Norm ◽  
Sharp Lower Bound

Solutions x(t) of the Lipschitz equation x = f(x) with an arbitrary vector norm are considered. It is proved that the sharp lower bound for the distances between successive extremums of xk(t) equals π/L where L is the Lipschitz constant. For non-constant periodic solutions, the lower bound for the periods is 2π/L. These estimates are achieved for norms that are invariant with respect to permutation of the indices.

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