Collatz conjecture Collatz–Wielandt formula Spectral graph theory
Scientific career
Fields
Mathematics
Institutions
University of Berlin Technical University of Karlsruhe Technische Universität Darmstadt University of Hanover University of Hamburg
Doctoral advisor
Alfred Klose Erhard Schmidt
Doctoral students
Frank Natterer Heinz Unger [de]
Lothar Collatz (German:[ˈkɔlaʦ]; July 6, 1910 – September 26, 1990) was a German mathematician, born in Arnsberg, Westphalia.
The "3x + 1" problem is also known as the Collatz conjecture, named after him and still unsolved. The Collatz–Wielandt formula for the Perron–Frobenius eigenvalue of a positive square matrix was also named after him.
Collatz's 1957 paper with Ulrich Sinogowitz,[1] who had been killed in the bombing of Darmstadt in World War II,[2] founded the field of spectral graph theory.
^Von Collatz, L. and Sinogowitz, U., 1957, December. Spektren endlicher Grafen. In Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg (vol. 21, no. 1, pp. 63–77). Springer-Verlag.
^Mallion, R.B., 2005. An autobiographical account of chemical graph theory in the years surrounding the launch of MATCH: An Oxford participant's highly personal and parochial reminiscence about the period 1969–1976. Match-Communications In Mathematical And In Computer Chemistry, 53(1), pp. 15–52.
LotharCollatz (German: [ˈkɔlaʦ]; July 6, 1910 – September 26, 1990) was a German mathematician, born in Arnsberg, Westphalia. The "3x + 1" problem is...
no general proof has been found. It is named after the mathematician LotharCollatz, who introduced the idea in 1937, two years after receiving his doctorate...
East German politician Lothar-Günther Buchheim (1918–2007), German author LotharCollatz (1910–1990), German mathematician Lothar Dräger (1927–2016), German...
in Berlin Fritz Cremer (1906–1993), sculptor (Buchenwald Memorial) LotharCollatz (1910–1990), mathematician Günter Keute (born 1955), footballer Friedrich...
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professor Constantin Carathéodory (1873–1950), mathematician, professor LotharCollatz (1910-1990), chair in applied mathematics at the technical university...
Hilbert Doctoral students Salomon Bochner Alfred Brauer Richard Brauer LotharCollatz Alexander Dinghas Michael Golomb Guido Hoheisel Eberhard Hopf Heinz...
Differentialgleichungen zweiter und vierter Ordnung" under the supervision of Prof. LotharCollatz. In 1971, he made the habilitation "Verallgemeinerte Splines und singuläre...
Florent Bureau Mary Lucy Cartwright Lamberto Cesari K. S. Chandrasekharan LotharCollatz H. S. M. Coxeter Harold Davenport Jean Dieudonné Joseph L. Doob Beno...
Hamburg where he earned his doctorate 1976 under the supervision of LotharCollatz. The name of his dissertation was Dualität und Näherungsverfahren bei...
applied and industrial mathematics. Named after the German mathematician LotharCollatz, it is widely regarded as one of the most prestigious prizes for young...
Numerical mathematics, Symposium on the Occasion of Retirement of LotharCollatz, Hamburg 1979, International Series of Numerical Mathematics, vol. 49...
aeronautical engineering faculty, which only existed there for a short time. LotharCollatz was one of his doctoral students, but he was the last student of Richard...
espaces pseudodistaciés". C. R. Acad. Sci. Paris. 198 (1934): 1563–1565. Collatz, Lothar (1966). Functional Analysis and Numerical Mathematics. New York, San...
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