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1999 | OriginalPaper | Buchkapitel

Strong Resonance

verfasst von : Martin Schechter

Erschienen in: Linking Methods in Critical Point Theory

Verlag: Birkhäuser Boston

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As we saw in Chapter VIII, the equation 12.1.1$$Au = f\left( {x,u} \right)$$ has asymptotic resonance at infinity if 12.1.2$$f\left( {x,t} \right)/t \to {\lambda _\ell }as\left| t \right| \to \infty,$$ where λ is an eigenvalue of A. However, there are various degrees of resonance. If we write 12.1.3$$f\left( {x,t} \right) = \lambda _\ell t + p\left( {x,t} \right),$$ then (12.1.2) will be true as long as 12.1.4$$p\left( {x,t} \right)/t \to 0{\text{ }}as{\text{ }}\left| t \right| \to \infty .$$

Metadaten
Titel
Strong Resonance
verfasst von
Martin Schechter
Copyright-Jahr
1999
Verlag
Birkhäuser Boston
DOI
https://doi.org/10.1007/978-1-4612-1596-7_12

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