harmonic analysis

noun

: the expression of a periodic function as a sum of sines and cosines and specifically by a Fourier series

Examples of harmonic analysis in a Sentence

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The Mizohata-Takeuchi conjecture is a problem in harmonic analysis, a field that studies how functions are assembled from wavelike components. Kevin Hartnett, Quanta Magazine, 1 Aug. 2025 Rajula Srivastava, for contributions in harmonic analysis and analytic number theory, including contributions to the problem of counting rational points near smooth manifolds. Alex Cramer, HollywoodReporter, 6 Apr. 2025 Larry Guth’s expertise in harmonic analysis gave him a fresh perspective on a number theory problem that had resisted proof for decades. Jordana Cepelewicz, WIRED, 4 Aug. 2024 In 1874 in the United States, William Ferrel, a mathematician with the Coast and Geodetic Survey, developed a similar harmonic analysis and prediction device that used 19 harmonic constituents. IEEE Spectrum, 2 June 2024

Word History

First Known Use

1867, in the meaning defined above

Time Traveler
The first known use of harmonic analysis was in 1867

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Cite this Entry

“Harmonic analysis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/harmonic%20analysis. Accessed 7 Sep. 2025.

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