Results 31 to 40 of about 6,490,162 (222)

Entire solutions for several second-order partial differential-difference equations of Fermat type with two complex variables

open access: yesAdvances in Difference Equations, 2021
This paper is concerned with description of the existence and the forms of entire solutions of several second-order partial differential-difference equations with more general forms of Fermat type.
Hong Yan Xu   +3 more
doaj   +1 more source

Boundary relations and generalized resolvents of symmetric operators [PDF]

open access: yes, 2006
The Kre\u{\i}n-Naimark formula provides a parametrization of all selfadjoint exit space extensions of a, not necessarily densely defined, symmetric operator, in terms of maximal dissipative (in $\dC_+$) holomorphic linear relations on the parameter space
A. Dijksma   +53 more
core   +4 more sources

The q-Difference Theorems for Meromorphic Functions of Several Variables

open access: yesAbstract and Applied Analysis, 2014
We investigate q-shift analogue of the lemma on logarithmic derivative of several variables. Let f be a meromorphic function in ℂn of zero order such that f(0)≠0, ∞, and let q∈ℂn\{0}.
Zhi-Tao Wen
doaj   +1 more source

Value Distribution for a Class of Small Functions in the Unit Disk

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
If 𝑓 is a meromorphic function in the complex plane, R. Nevanlinna noted that its characteristic function 𝑇(𝑟,𝑓) could be used to categorize 𝑓 according to its rate of growth as |𝑧|=𝑟→∞. Later H.
Paul A. Gunsul
doaj   +1 more source

Tropical Nevanlinna theory and second main theorem

open access: yes, 2009
We present a version of the tropical Nevanlinna theory for real-valued, continuous, piecewise linear functions on the real line. In particular, a tropical version of the second main theorem is proved.
Laine, Ilpo, Tohge, Kazuya
core   +1 more source

Latitudinal and Hemispheric Responses of Solar Quiet Ionospheric Currents During Two Annular Solar Eclipses: Evidence From Low to Mid‐Latitude Observations

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract A sudden drop in solar radiation during an annular (or total) eclipse directly affects ionospheric electrodynamics, primarily through the reduction of solar extreme ultraviolet (EUV) and soft X‐ray flux, which are responsible for generating the ionospheric plasma.
Charles Owolabi   +6 more
wiley   +1 more source

Nevanlinna theory for the difference operator [PDF]

open access: yes, 2005
Certain estimates involving the derivative $f\mapsto f'$ of a meromorphic function play key roles in the construction and applications of classical Nevanlinna theory.
Halburd, R. G., Korhonen, R. J.
core   +4 more sources

GCD inequalities arising from codimension‐2 blowups

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract Assuming a deep Diophantine geometry conjecture by Vojta, Silverman proved an inequality giving an upper bound for the greatest common divisor (GCD). In this paper, we unconditionally prove a weaker version of this inequality. The main ingredient is the Ru–Vojta theory, which provides an efficient method of using Schmidt subspace theorem.
Yu Yasufuku
wiley   +1 more source

Notes on meromorphic functions sharing small function and its derivatives

open access: yesArab Journal of Mathematical Sciences, 2015
In this paper we study the uniqueness theorems of meromorphic functions which share a small function with its derivatives, and give some results which are related to the results of P. Li.
Amer H.H. Al-Khaladi
doaj   +1 more source

Uniqueness of certain differential polynomial of $L$-functions and meromorphic functions sharing a polynomial

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
The purpose of this paper is to obtain some sufficient conditions to determine the relation between a meromorphic function and an $L$-function when certain differential polynomial generated by them sharing a one degree polynomial. The main theorem of the
A. Banerjee, S. Bhattacharyya
doaj   +1 more source

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