By the weak linking theorem and the local linking theorem, we study the existence of periodic solutions for the following delay non-autonomous systems The variational principle is given, some existence theorems of 4r-periodic solutions of (1) are obtained.
โฆ LIBER โฆ
On instability of solutions for a class of a first order partial differential equation with delay
โ Scribed by Song Kaitai; Zhou Li
- Publisher
- Wuhan University
- Year
- 1998
- Tongue
- English
- Weight
- 56 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1007-1202
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