Waves of maximal height for a class of nonlocal equations with homogeneous symbols
Peer reviewed, Journal article
Published version
Åpne
Permanent lenke
https://hdl.handle.net/11250/3139320Utgivelsesdato
2021Metadata
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- Institutt for matematiske fag [2408]
- Publikasjoner fra CRIStin - NTNU [37763]
Originalversjon
Indiana University Mathematics Journal. 2021, 70 (2), 711-742. 10.1512/IUMJ.2021.70.8368Sammendrag
We discuss the existence and regularity of periodic traveling-wave solutions of a class of nonlocal equations with homogeneous symbol of order −r , where r > 1. Based on the properties of the nonlocal convolution operator, we apply analytic bifurcation theory and show that a highest, peaked, periodic traveling-wave solution is reached as the limiting case at the end of the main bifurcation curve. The regularity of the highest wave is proved to be exactly Lipschitz. As an application of our analysis, we reformulate the steady reduced Ostrovsky equation in a nonlocal form in terms of a Fourier multiplier operator with symbolm(k) = k−2. Thereby, we recover its unique highest 2π-periodic, peaked traveling-wave solution, having the property of being exactly Lipschitz at the crest.