Geodetic rays and fibers in periodic graphs
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In: Journal of Graph Theory, Vol. 34, No. 1, 05.2000, p. 67-88.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Geodetic rays and fibers in periodic graphs
AU - Niemeyer, Peter
AU - Watkins, Mark E.
PY - 2000/5
Y1 - 2000/5
N2 - Using the notion of fibers, where two rays belong to the same fiber if and only if they lie within bounded Hausdorff-distance of one another, we study how many fibers of a graph contain a geodetic ray and how many essentially distinct geodetic rays such "geodetic fibers" must contain. A complete answer is provided in the case of locally finite graphs that admit an almost transitive action by some infinite finitely generated, abelian group. Such graphs turn out to have either finitely many or uncountably many geodetic fibers. Furthermore, with finitely many possible exceptions, each of these fibers contains uncountably many geodetic rays.
AB - Using the notion of fibers, where two rays belong to the same fiber if and only if they lie within bounded Hausdorff-distance of one another, we study how many fibers of a graph contain a geodetic ray and how many essentially distinct geodetic rays such "geodetic fibers" must contain. A complete answer is provided in the case of locally finite graphs that admit an almost transitive action by some infinite finitely generated, abelian group. Such graphs turn out to have either finitely many or uncountably many geodetic fibers. Furthermore, with finitely many possible exceptions, each of these fibers contains uncountably many geodetic rays.
KW - Business informatics
KW - locally finite
KW - almost transitive
KW - fiber
KW - geodesic
KW - periodic graph
KW - translatable
UR - http://www.scopus.com/inward/record.url?scp=0034180090&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1097-0118(200005)34:1<67::AID-JGT7>3.0.CO;2-V
DO - 10.1002/(SICI)1097-0118(200005)34:1<67::AID-JGT7>3.0.CO;2-V
M3 - Journal articles
VL - 34
SP - 67
EP - 88
JO - Journal of Graph Theory
JF - Journal of Graph Theory
SN - 0364-9024
IS - 1
ER -