Permutation graphs, fast forward permutations, and sampling the cycle structure of a permutation
نویسندگان
چکیده
منابع مشابه
Permutation graphs, fast forward permutations, and sampling the cycle structure of a permutation
P ∈ SN is a fast forward permutation if for each m the computational complexity of evaluating Pm(x) is small independently of m and x. Naor and Reingold constructed fast forward pseudorandom cycluses and involutions. By studying the evolution of permutation graphs, we prove that the number of queries needed to distinguish a random cyclus from a random permutation in SN is (N) if one does not us...
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A special class of cubic graphs are the cycle permutation graphs. A cycle permutation graph Pn(α) is defined by taking two vertex-disjoint cycles on n vertices and adding a matching between the vertices of the two cycles.In this paper we determine a good upper bound for tenacity of cycle permutation graphs.
متن کاملon the tenacity of cycle permutation graph
a special class of cubic graphs are the cycle permutation graphs. a cycle permutation graph pn( α) is defined by taking two vertex-disjoint cycles on n vertices and adding a matching between the vertices of the two cycles.in this paper we determine a good upper bound for tenacity of cycle permutation graphs.
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The random permutation is the Fräıssé limit of the class of finite structures with two linear orders. Answering a problem stated by Peter Cameron in 2002, we use a recent Ramsey-theoretic technique to show that there exist precisely 39 closed supergroups of the automorphism group of the random permutation, and thereby expose all symmetries of this structure. Equivalently, we classify all struct...
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ژورنال
عنوان ژورنال: Journal of Algorithms
سال: 2003
ISSN: 0196-6774
DOI: 10.1016/s0196-6774(03)00017-8