JournalspmVol. 80, No. 3/4pp. 401–405

A reverse Ozawa–Rogers estimate

  • Yi C. Huang

    Nanjing Normal University, China
A reverse Ozawa–Rogers estimate cover
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Abstract

We provide a reverse bilinear estimate for the one-dimensional Klein–Gordon equation that complements a result of Ozawa and Rogers. The proof relies on the cosine formula for frequency vectors adapted to the Klein–Gordon equation.

Cite this article

Yi C. Huang, A reverse Ozawa–Rogers estimate. Port. Math. 80 (2023), no. 3/4, pp. 401–405

DOI 10.4171/PM/2108