• Title/Summary/Keyword: pebbling number

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THE DOMINATION COVER PEBBLING NUMBER OF SOME GRAPHS

  • Kim, Ju Young;Kim, Sung Sook
    • Journal of the Chungcheong Mathematical Society
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    • v.19 no.4
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    • pp.403-408
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    • 2006
  • A pebbling move on a connected graph G is taking two pebbles off of one vertex and placing one of them on an adjacent vertex. The domination cover pebbling number ${\psi}(G)$ is the minimum number of pebbles required so that any initial configuration of pebbles can be transformed by a sequence of pebbling moves so that the set of vertices that contain pebbles forms a domination set of G. We determine the domination cover pebbling number for fans, fuses, and pseudo-star.

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COVERING COVER PEBBLING NUMBER OF A HYPERCUBE & DIAMETER d GRAPHS

  • Lourdusamy, A.;Tharani, A. Punitha
    • The Pure and Applied Mathematics
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    • v.15 no.2
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    • pp.121-134
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    • 2008
  • A pebbling step on a graph consists of removing two pebbles from one vertex and placing one pebble on an adjacent vertex. The covering cover pebbling number of a graph is the smallest number of pebbles, such that, however the pebbles are initially placed on the vertices of the graph, after a sequence of pebbling moves, the set of vertices with pebbles forms a covering of G. In this paper we find the covering cover pebbling number of n-cube and diameter two graphs. Finally we give an upperbound for the covering cover pebbling number of graphs of diameter d.

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Pebbling Numbers on Graphs (그래프 위에서의 Pebbling 수)

  • Chun, Kyung-Ah;Kim, Sung-Sook
    • The Journal of Natural Sciences
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    • v.12 no.1
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    • pp.1-9
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    • 2002
  • Let G be a connected graph on n vertices. The pebbling number of graph G, f(G), is the least m such that, however m pebbles are placed on the vertices of G, we can move a pebble to any vertex by a sequence of moves, each move taking two pebbles off one vertex and placing one on an adjacent vertex. In this paper, we compute the pebbling number of the Petersen Graph. We also show that the pebbling number of the categorical Product G.H is (m+n)h where G is the complete bipartite graph $K_{m,n}$ and H is the complete graph with $h(\geq4)$ vertices.

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PEBBLING ON THE MIDDLE GRAPH OF A COMPLETE BINARY TREE

  • LOURDUSAMY, A.;NELLAINAYAKI, S. SARATHA;STEFFI, J. JENIFER
    • Journal of applied mathematics & informatics
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    • v.37 no.3_4
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    • pp.163-176
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    • 2019
  • Given a distribution of pebbles on the vertices of a connected graph G, a pebbling move is defined as the removal of two pebbles from some vertex and the placement of one of those pebbles at an adjacent vertex. The t-pebbling number, $f_t(G)$, of a connected graph G, is the smallest positive integer such that from every placement of $f_t(G)$ pebbles, t pebbles can be moved to any specified vertex by a sequence of pebbling moves. A graph G has the 2t-pebbling property if for any distribution with more than $2f_t(G)$ - q pebbles, where q is the number of vertices with at least one pebble, it is possible, using the sequence of pebbling moves, to put 2t pebbles on any vertex. In this paper, we determine the t-pebbling number for the middle graph of a complete binary tree $M(B_h)$ and we show that the middle graph of a complete binary tree $M(B_h)$ satisfies the 2t-pebbling property.

MONOPHONIC PEBBLING NUMBER OF SOME NETWORK-RELATED GRAPHS

  • AROCKIAM LOURDUSAMY;IRUDAYARAJ DHIVVIYANANDAM;SOOSAIMANICKAM KITHER IAMMAL
    • Journal of applied mathematics & informatics
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    • v.42 no.1
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    • pp.77-83
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    • 2024
  • Chung defined a pebbling move on a graph G as the removal of two pebbles from one vertex and the addition of one pebble to an adjacent vertex. The monophonic pebbling number guarantees that a pebble can be shifted in the chordless and the longest path possible if there are any hurdles in the process of the supply chain. For a connected graph G a monophonic path between any two vertices x and y contains no chords. The monophonic pebbling number, µ(G), is the least positive integer n such that for any distribution of µ(G) pebbles it is possible to move on G allowing one pebble to be carried to any specified but arbitrary vertex using monophonic a path by a sequence of pebbling operations. The aim of this study is to find out the monophonic pebbling numbers of the sun graphs, (Cn × P2) + K1 graph, the spherical graph, the anti-prism graphs, and an n-crossed prism graph.

PEBBLING EXPONENTS OF PATHS

  • Kim, Ju-Young;Kim, Sun-Ah
    • Honam Mathematical Journal
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    • v.32 no.4
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    • pp.769-776
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    • 2010
  • A pebbling move on a connected graph G is taking two pebbles off of one vertex and placing one of them on an adjacent vertex. For a connected graph G, $G^p$ (p > 1) is the graph obtained from G by adding the edges (u, v) to G whenever 2 $\leq$ dist(u, v) $\leq$ p in G. And the pebbling exponent of a graph G to be the least power of p such that the pebbling number of $G^p$ is equal to the number of vertices of G. We compute the pebbling number of fourth power of paths so that the pebbling exponents of some paths are calculated.

PEBBLING NUMBERS OF THE COMPOSITIONS OF TWO GRAPHS

  • Kim, Ju-Young;Kim, Sung-Sook
    • The Pure and Applied Mathematics
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    • v.9 no.1
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    • pp.57-61
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    • 2002
  • Let G be a connected graph. A pebbling move on a graph G is the movement of taking two pebbles off from a vertex and placing one of them onto an adjacent vertex. The pebbling number f(G) of a connected graph G is the least n such that any distribution of n pebbles on the vertices of G allows one pebble to be moved to any specified, but arbitrary vertex by a sequence of pebbling moves. In this paper, the pebbling numbers of the compositions of two graphs are computed.

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PEBBLING NUMBERS OF GRAPH PRODUCTS

  • Kim, Ju Young;Kim, Sung Sook
    • Journal of the Chungcheong Mathematical Society
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    • v.14 no.1
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    • pp.7-14
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    • 2001
  • Let G be a connected graph. A pebbling move on a graph G is taking two pebbles off one vertex and placing one of them on an adjacent vertex. The pebbling number of a connected graph G, f(G), is the least n such that any distribution of n pebbles on the vertices of G allows one pebble to be moved to any specified, but arbitrary vertex by a sequence of pebbling moves. In this paper, the pebbling numbers of the lexicographic products of some graphs are computed.

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