Åke Vilhelm Carl Pleijel (10 August 1913 – 24 September 1989) was a Swedish mathematician. He completed his PhD in mathematics at

Stockholm University Stockholm University (SU) () is a public university, public research university in Stockholm, Sweden, founded as a college in 1878, with university status since 1960. With over 33,000 students at four different faculties: law, humanities, social ...

in 1940 (with

Torsten Carleman Torsten Carleman (8 July 1892, Visseltofta, Osby Municipality – 11 January 1949, Stockholm), born Tage Gillis Torsten Carleman, was a Swedish mathematician, known for his results in classical analysis and its applications. As the director of t ...

as supervisor), and later became Professor of Mathematics at

Uppsala University Uppsala University (UU) () is a public university, public research university in Uppsala, Sweden. Founded in 1477, it is the List of universities in Sweden, oldest university in Sweden and the Nordic countries still in operation. Initially fou ...

. Åke Vilhelm Carl Pleijel published the paper in which the

Minakshisundaram–Pleijel zeta function The Minakshisundaram–Pleijel zeta function is a zeta function encoding the eigenvalues of the Laplacian of a compact Riemannian manifold. It was introduced by . The case of a compact region of the plane was treated earlier by . Definition For ...

was introduced.

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* 1913 births 1989 deaths Stockholm University alumni 20th-century Swedish mathematicians Members of the Royal Swedish Academy of Sciences {{Sweden-mathematician-stub