Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4612704 | Journal of Differential Equations | 2006 | 17 Pages |
Abstract
In this paper we prove the existence of nonstationary periodic solutions of delay Lotka–Volterra equations. In the proofs we use the S1-degree due to Dylawerski et al. [G. Dylawerski, K. Geba, J. Jodel, W. Marzantowicz, An S1-equivariant degree and the Fuller index, Ann. Polon. Math. 63 (1991) 243–280].
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