zbMATH — the first resource for mathematics

Examples
Geometry Search for the term Geometry in any field. Queries are case-independent.
Funct* Wildcard queries are specified by * (e.g. functions, functorial, etc.). Otherwise the search is exact.
"Topological group" Phrases (multi-words) should be set in "straight quotation marks".
au: Bourbaki & ti: Algebra Search for author and title. The and-operator & is default and can be omitted.
Chebyshev | Tschebyscheff The or-operator | allows to search for Chebyshev or Tschebyscheff.
"Quasi* map*" py: 1989 The resulting documents have publication year 1989.
so: Eur* J* Mat* Soc* cc: 14 Search for publications in a particular source with a Mathematics Subject Classification code (cc) in 14.
"Partial diff* eq*" ! elliptic The not-operator ! eliminates all results containing the word elliptic.
dt: b & au: Hilbert The document type is set to books; alternatively: j for journal articles, a for book articles.
py: 2000-2015 cc: (94A | 11T) Number ranges are accepted. Terms can be grouped within (parentheses).
la: chinese Find documents in a given language. ISO 639-1 language codes can also be used.

Operators
a & b logic and
a | b logic or
!ab logic not
abc* right wildcard
"ab c" phrase
(ab c) parentheses
Fields
any anywhere an internal document identifier
au author, editor ai internal author identifier
ti title la language
so source ab review, abstract
py publication year rv reviewer
cc MSC code ut uncontrolled term
dt document type (j: journal article; b: book; a: book article)
Global behavior of solutions of the nonlinear difference equation x n+1 =p n +x n-1 /x n . (English) Zbl 1079.39005

The trichotomy results concerning the difference equation

x n+1 =p+x n-1 /x n

are considered for the equation

x n+1 =p n +x n-1 /x n

with the initial conditions x -1 0, x 0 >0 and {p n } n a positive sequence with lim inf n p n =p0, lim sup n p n =q<. If p>0 then {x n } n is persistent and if p>1 then {x n } n is bounded from above. Moreover, if 1<Pp n Q then the interval [(PQ-1)/(Q-1),(PQ-1)/(P-1)] is a positive invariant set of the equation. If either 0<p 2n+1 <1 and lim n p 2n+1 =0 or 0<p 2n <1 and lim n p 2n =0 then there exist unbounded solutions to the equation. Some special cases of the equation are considered as applications.


MSC:
39A11Stability of difference equations (MSC2000)
39A20Generalized difference equations