Rong-Kun Zhuang
Abstract:
We establish oscillation criteria for the second-order
elliptic differential equation
where
is an exterior domain in
.
These
criteria are different from most known ones in the sense that they
are based on the information only on a sequence of annulus
of
,
rather than on the whole exterior domain
.
Both the cases when
exists
for all i and when it does not exist for some i
are considered.
Submitted May 28, 2008. Published January 2, 2009.
Math Subject Classifications: 35J60, 34C10.
Key Words: Nonlinear elliptic differential equation; second order;
oscillation; annulus criteria.
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Rong-Kun Zhuang Department of Mathematics, Huizhou University Huizhou 516015, China Department of Mathematics, Sun Yat-sen University Guangzhou 510275, China email: rkzhuang@163.com |
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