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Dirichlet

American  
[dir-i-kley, dee-ree-kley] / ˌdɪr ɪˈkleɪ, ˌdi riˈkleɪ /

noun

  1. Peter Gustav Lejeune 1805–59, German mathematician.


Dirichlet British  
/ diriˈkleː /

noun

  1. Peter Gustav Lejeune (ˈpeːtər ˈɡʊstaf ləˈʒœn). 1805–59, German mathematician, noted for his work on number theory and calculus

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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They can be used, for example, to help solve classic boundary value problems such as the Dirichlet problem or the Neumann problem.

From Science Daily Jan. 7, 2026

The pigeonhole principle is usually attributed to Peter Gustav Lejeune Dirichlet, who lived about 200 years after Leurechon.

From Scientific American Mar. 20, 2023

This bit of common sense, sometimes termed the pigeonhole or Dirichlet drawer principle, can occasionally be used to derive claims that are not so obvious.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos

The first completely satisfactory investigation is due to Dirichlet; his first memoir appeared in Crelle’s Journal for 1829, and the second, which is a model of clearness, in Dove’s Repertorium der Physik.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" by Various

Dirichlet laid down certain definite sufficient conditions in regard to the nature of a function which is expansible, and found under these conditions the limiting value of the sum of n terms of the series.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" by Various

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