Lothar collatz biography books
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Lothar Collatz
Lothar Collatz (German: [ˈkɔlaʦ]; 6 July, 1910 – 26 September 1990) was a German mathematician. He was born in Arnsberg, Westphalia.
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The "3x + 1" problem also known as the Collatz conjecture was named after him, and is still not solved. The Collatz–Wielandt formula for the Perron–Frobenius theorem was also named after him. His 1957 paper with Ulrich Sinogowitz,[1] who was killed in the bombing of Darmstadt in World War II,[2] started the field of spectral graph theory.
Biography
[change | change source]Collatz studied at universities in Germany, including the University of Berlin under Alfred Klose. He received his doctorate in 1935 for writing a paper about linear differential equations.
He worked as an assistant for the university.
Lothar collatz biography books
Then, he worked at the Technical University of Karlsruhe in 1935. He habilitated (achieved the highest university degree in European countries) in 1937. He worked as a Privatdozent (sign of position g