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Complexity of Hamiltonian Cycle Reconfiguration [PDF]

open access: yesAlgorithms, 2018
The Hamiltonian cycle reconfiguration problem asks, given two Hamiltonian cycles C 0 and C t of a graph G, whether there is a sequence of Hamiltonian cycles C 0 , C 1 , … , C t such that C i can be obtained ...
Asahi Takaoka
doaj   +2 more sources

Contractible Hamiltonian Cycles in Polyhedral Maps [PDF]

open access: yesDiscrete Mathematics, Algorithms and Applications, 2012
We present a necessary and sufficient condition for existence of a contractible Hamiltonian Cycle in the edge graph of equivelar maps on surfaces. We also present an algorithm to construct such cycles.
Maity, Dipendu, Upadhyay, Ashish Kumar
core   +2 more sources

Hamiltonian Cycles in Polyhedral Maps [PDF]

open access: yesProceedings - Mathematical Sciences, 2014
We present a necessary and sufficient condition for existence of a contractible, non-separating and noncontractible separating Hamiltonian cycle in the edge graph of polyhedral maps on surfaces.
Maity, Dipendu, Upadhyay, Ashish Kumar
core   +3 more sources

Hamiltonian Cycles on Random Eulerian Triangulations [PDF]

open access: yesNuclear Physics B, 1998
A random Eulerian triangulation is a random triangulation where an even number of triangles meet at any given vertex. We argue that the central charge increases by one if the fully packed O(n) model is defined on a random Eulerian triangulation instead ...
Ambjorn   +38 more
core   +5 more sources

Counting Traversing Hamiltonian Cycles in Tiled Graphs

open access: yesMathematics, 2023
Recently, the problem of counting Hamiltonian cycles in 2-tiled graphs was resolved by Vegi Kalamar, Bokal, and Žerak. In this paper, we continue our research on generalized tiled graphs.
Alen Vegi Kalamar
doaj   +1 more source

Hamiltonian cycles in torical lattices [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
We establish sufficient conditions for a toric lattice $T_{m,n}$ to be Hamiltonian. Also, we give some asymptotics for the number of Hamiltonian cycles in $T_{m,n}$.
Vladimir K. Leontiev
doaj   +1 more source

An explicit construction of graphs of bounded degree that are far from being Hamiltonian [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2022
Hamiltonian cycles in graphs were first studied in the 1850s. Since then, an impressive amount of research has been dedicated to identifying classes of graphs that allow Hamiltonian cycles, and to related questions.
Isolde Adler, Noleen Köhler
doaj   +1 more source

Finding hidden hamiltonian cycles [PDF]

open access: yesRandom Structures & Algorithms, 1991
AbstractConsider a random graph G composed of a Hamiltonian cycle on n labeled vertices and dn random edges that “high” the cycle. Is it possible to unravel the structures, that is, to efficiently find a Himiltonian cycle in G? We describe an O(n3 log n)‐step algorithm A for this purpose, and prove that it succeeds almost surely. Part one of A properly
Broder, Andrei Z.   +2 more
openaire   +1 more source

Counting Hamiltonian Cycles in 2-Tiled Graphs

open access: yesMathematics, 2021
In 1930, Kuratowski showed that K3,3 and K5 are the only two minor-minimal nonplanar graphs. Robertson and Seymour extended finiteness of the set of forbidden minors for any surface.
Alen Vegi Kalamar   +2 more
doaj   +1 more source

Two Hamiltonian cycles

open access: yesDiscrete Mathematics, 2022
If the line graph of a graph $G$ decomposes into Hamiltonian cycles, what is $G$? We answer this question for decomposition into two cycles.
Vaidy Sivaraman, Thomas Zaslavsky
openaire   +3 more sources

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