Search engine: DuckDuckGo_DE | Query: felix klein | Position: 20
URL: https://mathshistory.st-andrews.ac.uk/Biographies/Klein/
Title: Felix Klein (1849 - Biography - MacTutor History of Mathematics
Description: Felix Klein is best known for his work in non-euclidean geometry, for his work on the connections between geometry and group theory, and for results in function theory. He was born on 25 / 4 / 1849 and delighted in pointing out that each of the day (5 2 5^{2} 5 2), month (2 2 2^{2} 2 2), and year (4 3 2 43^{2} 4 3 2) was the square of a prime. Klein's father was secretary to the head of the ...
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