牛顿系统周期解的存在性和连续性
Existence and continuation of periodic solutions of Newtonian systems
摘要:
本文研究了一类自治牛顿系统周期解的存在性和连续性。为了证明结果,我们应用SO(2)-等变梯度算子的无限维版本的程度。利用Rabier的结果,我们证明了勒雷-绍德尔度在我们定理的证明中是不适用的,因为它为零。
英文摘要:
In this article we study the existence and the continuation of periodic solutions of autonomous Newtonian systems. To prove the results we apply the infinite-dimensional version of the degree for SO(2)-equivariant gradient operators. Using the results due to Rabier we show that the Leray-Schauder degree is not applicable in the proofs of our theorems, because it vanishes.
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