“…For example, it has more cycles than the hypercube [15], and it can embed binary trees [22], paths of odd and even lengths [14], [16], and many-to-many disjoint path covers [25]. The crossed cube has received many researchers' attention [4], [5], [12], [14], [19], [28]. Its definition will be introduced in the next section.…”
Section: Introductionmentioning
confidence: 99%
“…The faulttolerant Hamiltonicity of a Hamiltonian graph G indicates the maximum integer k such that G − F remains Hamiltonian for every F ⊂ (V(G) ∪ E(G)) with |F| ≤ k. Similarly, the fault-tolerant Hamiltonian connectedness of a Hamiltonian connected graph G indicates the maximum integer k such that G − F remains Hamiltonian connected for every F ⊂ (V(G) ∪ E(G)) with |F| ≤ k [19]. In other words, a graph G is k-fault-tolerant Hamiltonian (respectively, kfault-tolerant Hamiltonian connected) if it remains HamilCopyright c 2015 The Institute of Electronics, Information and Communication Engineers tonian (respectively, Hamiltonian connected) after removing at most k vertices and/or edges.…”
Section: Introductionmentioning
confidence: 99%
“…In other words, a graph G is k-fault-tolerant Hamiltonian (respectively, kfault-tolerant Hamiltonian connected) if it remains HamilCopyright c 2015 The Institute of Electronics, Information and Communication Engineers tonian (respectively, Hamiltonian connected) after removing at most k vertices and/or edges. Huang et al [19] have shown that the n-dimensional crossed cube is (n − 2)-faulttolerant Hamiltonian and (n − 3)-fault-tolerant Hamiltonian connected if n ≥ 3.…”
SUMMARYIn this paper, we investigate the fault-tolerant Hamiltonian problems of crossed cubes with a faulty path. More precisely, let P denote any path in an n-dimensional crossed cube CQ n for n ≥ 5, and let V(P) be the vertex set of P. We show that CQ n − V(P) is Hamiltonian if |V(P)| ≤ n and is Hamiltonian connected if |V(P)| ≤ n−1. Compared with the previous results showing that the crossed cube is (n − 2)-fault-tolerant Hamiltonian and (n − 3)-fault-tolerant Hamiltonian connected for arbitrary faults, the contribution of this paper indicates that the crossed cube can tolerate more faulty vertices if these vertices happen to form some specific types of structures.
“…For example, it has more cycles than the hypercube [15], and it can embed binary trees [22], paths of odd and even lengths [14], [16], and many-to-many disjoint path covers [25]. The crossed cube has received many researchers' attention [4], [5], [12], [14], [19], [28]. Its definition will be introduced in the next section.…”
Section: Introductionmentioning
confidence: 99%
“…The faulttolerant Hamiltonicity of a Hamiltonian graph G indicates the maximum integer k such that G − F remains Hamiltonian for every F ⊂ (V(G) ∪ E(G)) with |F| ≤ k. Similarly, the fault-tolerant Hamiltonian connectedness of a Hamiltonian connected graph G indicates the maximum integer k such that G − F remains Hamiltonian connected for every F ⊂ (V(G) ∪ E(G)) with |F| ≤ k [19]. In other words, a graph G is k-fault-tolerant Hamiltonian (respectively, kfault-tolerant Hamiltonian connected) if it remains HamilCopyright c 2015 The Institute of Electronics, Information and Communication Engineers tonian (respectively, Hamiltonian connected) after removing at most k vertices and/or edges.…”
Section: Introductionmentioning
confidence: 99%
“…In other words, a graph G is k-fault-tolerant Hamiltonian (respectively, kfault-tolerant Hamiltonian connected) if it remains HamilCopyright c 2015 The Institute of Electronics, Information and Communication Engineers tonian (respectively, Hamiltonian connected) after removing at most k vertices and/or edges. Huang et al [19] have shown that the n-dimensional crossed cube is (n − 2)-faulttolerant Hamiltonian and (n − 3)-fault-tolerant Hamiltonian connected if n ≥ 3.…”
SUMMARYIn this paper, we investigate the fault-tolerant Hamiltonian problems of crossed cubes with a faulty path. More precisely, let P denote any path in an n-dimensional crossed cube CQ n for n ≥ 5, and let V(P) be the vertex set of P. We show that CQ n − V(P) is Hamiltonian if |V(P)| ≤ n and is Hamiltonian connected if |V(P)| ≤ n−1. Compared with the previous results showing that the crossed cube is (n − 2)-fault-tolerant Hamiltonian and (n − 3)-fault-tolerant Hamiltonian connected for arbitrary faults, the contribution of this paper indicates that the crossed cube can tolerate more faulty vertices if these vertices happen to form some specific types of structures.
“…Embedding paths and cycles in various well-known networks, such as the hypercube and some well-known variations of the hypercube, have been extensively investigated in the literature (see, e.g., Tsai [5] for the hypercubes, Fu [6] for the folded hypercubes, Huang et al [7] and Yang et al [8] for the crossed cubes, Yang et al [9] for the twisted cubes, Hsieh and Chang [10] for the Möbius cubes, Li et al [11] for the star graphs and Xu and Ma [12] for a survey on this topic). Recently, Cao et al [13] have shown that every edge of is contained in cycles of every length from 4 to 2 except 5, and every pair of vertices with distance is connected by paths of every length from to 2 − 1 except 2 and 4 if = 1, from which contains a Hamilton cycle for ⩾ 2 and a Hamilton path between any pair of vertices for ⩾ 3.…”
This paper considers the varietal hypercube network with mixed faults and shows that contains a fault-free Hamilton cycle provided faults do not exceed − 2 for ⩾ 2 and contains a fault-free Hamilton path between any pair of vertices provided faults do not exceed − 3 for ⩾ 3. The proof is based on an inductive construction.
키워드 : 교차큐브, 메쉬, 임베딩, 연장율, 확장율
Embedding a Mesh into a Crossed CubeKim, Sook-Yeon †
ABSTRACTThe crossed cube has received great attention because it has equal or superior properties to the hypercube that is widely known as a versatile parallel processing system. It has been known that a mesh of size m 2 2 × can be embedded into a crossed cube with dilation 1and expansion 1 and a mesh of size m 2 4 × with dilation 1 and expansion 2. However, as we know, it has been a conjecture that a mesh with more than eight rows and columns can be embedded into a crossed cube with dilation 1. In this paper, we show that a mesh of size
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