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Van der Corput lemma (harmonic analysis)

 Home Mathematics Fields of mathematics Fields of abstract algebra Representation theory Harmonic analysis
 0 By others on same topic  0 Discussions  1970-01-01  See my version
The Van der Corput lemma is a result in harmonic analysis that provides a way to estimate oscillatory integrals, especially integrals of the form: \[ \int e^{i \phi(t)} f(t) \, dt \] where \( \phi(t) \) is a smooth function, and \( f(t) \) is usually a function that is well-behaved (often in \( L^1 \) space).

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