Abstract
We present tight upper and lower bounds for the traveling salesman path through the points of two-dimensional modular lattices. We use these results to bound the traveling salesman path of two-dimensional Kronecker point sets. Our results rely on earlier work on shortest vectors in lattices as well as on the strong convergence of Jacobi–Perron type algorithms.
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References
Arlotto A, Steele JM (2013) Beardwood–Halton–Hammersley theorem for stationary ergodic sequences: a counterexample. arXiv:1307.0221v4 [math.PR]
Beardwood J, Halton J, Hammersley J (1959) The shortest path through many points. Math Proc Camb Philos Soc 55:299–327
Berthé V (2011) Multidimensional Euclidean algorithms, numeration and substitutions. Integers, 11B, Paper A02
Eisenbrand F (2001) Short vectors of planar lattices via continued fractions. Inform Process Lett 79:121–126
Gao J, Steele JM (1994) General spacefilling curve heuristics and limit theory for the traveling salesman problem. J Complex 10:230–245
Karloff H (1989) How long can a Euclidean traveling salesman tour be? SIAM J Discret Math 2(1):91–99
Kuipers L, Niederreiter H (1974) Uniform distribution of sequences. Wiley, New York
Meester R (1999) A simple proof of the exponential convergence of the modified Jacobi–Perron algorithm. Ergodic Theory Dyn Sys 19:1077–1083
Niederreiter H (1992) Random number generation and Quasi-Monte Carlo methods, CBMS-NSF Regional Conference Series in Applied Mathematics, vol 63. Society for Industrial and Applied Mathematics (SIAM), Philadelphia, PA
Pausinger F, Steinerberger S (2016) On the discrepancy of jittered sampling. J Complex 33:199–216
Pausinger F, Topuzoğlu A (2014) Permutations of finite fields and uniform distribution modulo 1, algebraic curves and finite fields. In: Niederreiter H, Ostafe A, Panario D, Winterhof A (eds) Radon series on applied and computational mathematics, vol 16, pp 145–160
Perron O (1907) Grundlagen für eine Theorie des Jacobischen Kettenbruchalgorithmus. Math Ann 64:1–76
Perron O (1921) Über diophantische approximationen. Math Ann 83:77–84
Platzman LK, Bartholdi J (1989) Spacefilling curves and the planar traveling salesman problem. J Assoc Comput Mach 36:719–737
Raju N (1976) Periodic Jacobi–Perron algorithms and fundamental units. Pac J Math 64:241–251
Rote G (1997) Finding a shortest vector in a two-dimensional lattice modulo \(m\). Theor Comput Sci 172:303–308
Schratzberger B (1998) The exponent of convergence of Brun’s algorithm in two dimensions. Sitzungsber Abt II(207):229–238
Schweiger F (1996) The exponent of convergence for the 2-dimensional Jacobi–Perron algorithm. In: Nowak WG, Schoissengeier J (eds) Proceedings of the conference on analytic and elementary number theory, Vienna, pp 207–213
Schweiger F (2000) Multidimensional continued fractions. Oxford University Press, Oxford
Steele JM (1980) Shortest path through pseudorandom points in the \(d\)-cube. Proc Am Math Soc 80:130–134
Steinerberger S (2010) A new lower bound for the geometric traveling salesman problem in terms of discrepancy. Oper Res Lett 38:318–319
Steinerberger S (2015) New bounds for the traveling salesman constant. Adv Appl Probab 47:27–36
Acknowledgments
I would like to thank Stefan Steinerberger for bringing this research problem to my attention and for many interesting discussions. Furthermore, I would like to thank an anonymous referee for very constructive feedback and for simplifying my initial proof of Lemma 3.1.
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Pausinger, F. Bounds for the traveling salesman paths of two-dimensional modular lattices. J Comb Optim 33, 1378–1394 (2017). https://doi.org/10.1007/s10878-016-0043-7
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DOI: https://doi.org/10.1007/s10878-016-0043-7