András Sebő

András Sebő (born 24 April 1954) is a Hungarian-French mathematician working in the areas of combinatorial optimization and discrete mathematics. Sebő is a French National Centre for Scientific Research (CNRS) Director of Research and the head of the Combinatorial Optimization.[1] group in Laboratory G-SCOP,[2] affiliated with the University of Grenoble and the CNRS.

András Sebő
Mathematical Institute Oberwolfach, 2011
Born (1954-04-24) 24 April 1954
Budapest
NationalityHungary, France
Alma materEötvös Loránd University
Scientific career
FieldsMathematics
InstitutionsCNRS, University of Grenoble
Doctoral advisorAndrás Frank

Biography

Sebő received his Ph.D. in 1984 from Faculty of Sciences of the Eötvös Loránd University and he obtained the Candidate's Degree from the Hungarian Academy of Sciences in 1989, advised by András Frank. From 1979 through 1988, Sebő was a Research Assistant and Research Fellow at The Computer and Automation Research Institute, Hungarian Academy of Sciences in Budapest. He moved to the University of Grenoble in 1988, where he advanced to his current position of CNRS Director of Research. He has held visiting positions at leading mathematical centers, including the Research Institute for Discrete Mathematics in Bonn, Germany (1988-89 as an Alexander von Humboldt Foundation Fellow and 1992-93 as the John von Neumann Professor), DIMACS (1989), University of Waterloo Faculty of Mathematics (multiple years), and the Hausdorff Center for Mathematics (2015). He is also one of seven honorary members of the Egerváry Research Group on Combinatorial Optimization.[3]

Research work

In 2012, Sebő and Jens Vygen developed a 7/5-approximation algorithm for the graph version of the traveling salesman problem;[4][5] currently the best-known approximation, improving on the widely cited 1.5-epsilon result of Gharan, Saberi, and Singh.[6][7] In 2013, Sebő found also an 8/5-approximation algorithm for the path version of the TSP.[8] A scientific conference in honor of Sebő was held April 24–25, 2014 in Grenoble, France.[9]

References
  1. "G-SCOP - Optimisation Combinatoire (OC)". G-scop.grenoble-inp.fr. Retrieved 2015-11-02.
  2. "G-SCOP - Laboratoire des Sciences pour la Conception, l'Optimisation et la Production de Grenoble - UMR5272". G-scop.grenoble-inp.fr. Retrieved 2015-11-02.
  3. "EGRES - Egerváry Research Group on Combinatorial Optimization". Cs.elte.hu. Retrieved 2015-11-02.
  4. Sebő, András; Vygen, Jens (2014-07-03). "Shorter tours by nicer ears: 7/5-approximation for the graph-TSP, 3/2 for the path version, and 4/3 for two-edge-connected subgraphs". Combinatorica. 34 (5): 597–629. arXiv:1201.1870. doi:10.1007/s00493-011-2960-3. S2CID 189904526.
  5. Harald Frater (2014). "scinexx | Rekord bei mathematischer Rundreise: Neuer Algorithmus verbessert Annäherung an das Handlungsreisenden-Problem". Combinatorica. 34 (5): 597–629. doi:10.1007/s00493-011-2960-3. S2CID 189904526. Retrieved 2015-11-02.
  6. Shayan Oveis Gharan; Amin Saberi; Mohit Singh (2011). "A Randomized Rounding Approach to the Traveling Salesman Problem" (PDF). Proc. IEEE 52nd Annual Symposium on Foundations of Computer Science (FOCS). pp. 550–559.
  7. "Computer Scientists Find New Shortcuts for Infamous Traveling Salesman Problem". Wired. 2013-01-30. Retrieved 2015-11-02.
  8. Sebő, András (2013-03-18). "Eight-Fifth Approximation for the Path TSP". Eight-Fifth Approximation for the Path TSP - Springer. Lecture Notes in Computer Science. Vol. 7801. Link.springer.com. pp. 362–374. arXiv:1209.3523. doi:10.1007/978-3-642-36694-9_31. ISBN 978-3-642-36693-2. S2CID 118031668.
  9. "Meeting in honor of Andras Sebo, April 24-25, 2014, Grenoble". Cermics.enpc.fr. 2014-03-20. Retrieved 2015-11-02.
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