Sigurður Helgason (mathematician)
Icelandic mathematician (1927–2023) / From Wikipedia, the free encyclopedia
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Sigurdur Helgason (Icelandic: Sigurður Helgason; 30 September 1927 – 3 December 2023) was an Icelandic mathematician whose research has been devoted to the geometry and analysis on symmetric spaces. In particular, he used new integral geometric methods to establish fundamental existence theorems for differential equations on symmetric spaces as well as some new results on the representations of their isometry groups. He also introduced a Fourier transform on these spaces and proved the principal theorems for this transform, the inversion formula, the Plancherel theorem and the analog of the Paley–Wiener theorem.
Quick Facts Sigurdur Helgason, Born ...
Sigurdur Helgason | |
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Born | (1927-09-30)30 September 1927 |
Died | 3 December 2023(2023-12-03) (aged 96) |
Occupation | Mathematician |
Honors | AMS fellow (2013) Leroy P. Steele Prize (1988) AAA&S member (1970) |
Scientific career | |
Doctoral advisor | Salomon Bochner |
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