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題名 均勻混合超級圖的唯一著色
The Unique colorability of a Uniform Mixed Hypergraph
作者 游喬任
貢獻者 張宜武
游喬任
關鍵詞 均勻混合超級圖
唯一著色
uinform mixed hypergraph
uniquely colorable
日期 2006
上傳時間 17-Sep-2009 13:47:55 (UTC+8)
摘要 在本篇論文,我們去找一個唯一著色的均勻混合超級圖的點數及邊數的下界。
我們證明為一著色的均勻混合超級圖的點數必須超過(l-1)(m-1)+1而且我們提出一個方法來建構為一著色的均勻混合超級圖。如果一個混合超圖是個D為空集合的r-均勻超級圖,當r=2則它是唯一著色的。否則,D為空集合的均勻超級圖不會是唯一著色的。我們介紹兩種有系統的方法建構唯一著色的均勻混合超級圖並且達到我們的邊界。首先,我們是著保持均勻混合超級圖的唯一著色下去減少D邊的個數。然後我們減少D邊的個數。我們考慮r均勻的C超圖和D超圖並找他們邊的個數的範圍。
In this thesis, we find the lower bounds of number of vertices and edges of
uniform mixed hypergraph which is uniquely colorable. We show that the size of vertex set of uniform mixed hypergraphs with unique coloring is more than (l-1)(m-1)+1 and we come up a way to construct uniquely colorable uniform mixed hypergraphs. If a mixed hypergraph is an r-uniform hypergraph with D empty, then it is uniquely colorable when r=2. Otherwise, an r-uniform hypergraph with D empty is not uniquely colorable. We will introduce two systematic ways to construct a uniform mixed hypergraph which is uniquely colorable and achieves our bounds. First,we reduce the number of C-edges such that uniform mixed hypergraphs keep being uniquely colorable. Then we reduce the number of D-edges. We consider r-uniform C-hypergraphs and D-hypergraphs and find the bounds on their number of edges.
參考文獻 1. V.I. Voloshin. The mixed hypergraphs. Comput. Sci. J.
Moldova 1 (1993), 45-52.
2. Zs. Tuza, V.I. Voloshin, H. Zhou. Uniquely colorable mixed hypergraphs. Discrete Math., to appear.
3. Zs. Tuza, V.I. Voloshin. Uncolorable mixed hypergraphs.
Discrete Appl. Math. 99 (2000), 209-227.
描述 碩士
國立政治大學
應用數學研究所
94751003
95
資料來源 http://thesis.lib.nccu.edu.tw/record/#G0094751003
資料類型 thesis
dc.contributor.advisor 張宜武zh_TW
dc.contributor.author (Authors) 游喬任zh_TW
dc.creator (作者) 游喬任zh_TW
dc.date (日期) 2006en_US
dc.date.accessioned 17-Sep-2009 13:47:55 (UTC+8)-
dc.date.available 17-Sep-2009 13:47:55 (UTC+8)-
dc.date.issued (上傳時間) 17-Sep-2009 13:47:55 (UTC+8)-
dc.identifier (Other Identifiers) G0094751003en_US
dc.identifier.uri (URI) https://nccur.lib.nccu.edu.tw/handle/140.119/32585-
dc.description (描述) 碩士zh_TW
dc.description (描述) 國立政治大學zh_TW
dc.description (描述) 應用數學研究所zh_TW
dc.description (描述) 94751003zh_TW
dc.description (描述) 95zh_TW
dc.description.abstract (摘要) 在本篇論文,我們去找一個唯一著色的均勻混合超級圖的點數及邊數的下界。
我們證明為一著色的均勻混合超級圖的點數必須超過(l-1)(m-1)+1而且我們提出一個方法來建構為一著色的均勻混合超級圖。如果一個混合超圖是個D為空集合的r-均勻超級圖,當r=2則它是唯一著色的。否則,D為空集合的均勻超級圖不會是唯一著色的。我們介紹兩種有系統的方法建構唯一著色的均勻混合超級圖並且達到我們的邊界。首先,我們是著保持均勻混合超級圖的唯一著色下去減少D邊的個數。然後我們減少D邊的個數。我們考慮r均勻的C超圖和D超圖並找他們邊的個數的範圍。
zh_TW
dc.description.abstract (摘要) In this thesis, we find the lower bounds of number of vertices and edges of
uniform mixed hypergraph which is uniquely colorable. We show that the size of vertex set of uniform mixed hypergraphs with unique coloring is more than (l-1)(m-1)+1 and we come up a way to construct uniquely colorable uniform mixed hypergraphs. If a mixed hypergraph is an r-uniform hypergraph with D empty, then it is uniquely colorable when r=2. Otherwise, an r-uniform hypergraph with D empty is not uniquely colorable. We will introduce two systematic ways to construct a uniform mixed hypergraph which is uniquely colorable and achieves our bounds. First,we reduce the number of C-edges such that uniform mixed hypergraphs keep being uniquely colorable. Then we reduce the number of D-edges. We consider r-uniform C-hypergraphs and D-hypergraphs and find the bounds on their number of edges.
en_US
dc.description.tableofcontents Abstrat...........................................i
中文摘要...........................................ii
1 Introduction....................................1
2 The Vertex Set of Uniquely Colorable
(l,m)-Uniform Mixed Hypergraphs.................2
3 The Uniquely Colorable r-Uniform Hypergraphs....4
4 Constructions of Uniquely Colorable
Uniform Mixed Hypergraphs.......................7
Reference.........................................24
zh_TW
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dc.language.iso en_US-
dc.source.uri (資料來源) http://thesis.lib.nccu.edu.tw/record/#G0094751003en_US
dc.subject (關鍵詞) 均勻混合超級圖zh_TW
dc.subject (關鍵詞) 唯一著色zh_TW
dc.subject (關鍵詞) uinform mixed hypergraphen_US
dc.subject (關鍵詞) uniquely colorableen_US
dc.title (題名) 均勻混合超級圖的唯一著色zh_TW
dc.title (題名) The Unique colorability of a Uniform Mixed Hypergraphen_US
dc.type (資料類型) thesisen
dc.relation.reference (參考文獻) 1. V.I. Voloshin. The mixed hypergraphs. Comput. Sci. J.zh_TW
dc.relation.reference (參考文獻) Moldova 1 (1993), 45-52.zh_TW
dc.relation.reference (參考文獻) 2. Zs. Tuza, V.I. Voloshin, H. Zhou. Uniquely colorable mixed hypergraphs. Discrete Math., to appear.zh_TW
dc.relation.reference (參考文獻) 3. Zs. Tuza, V.I. Voloshin. Uncolorable mixed hypergraphs.zh_TW
dc.relation.reference (參考文獻) Discrete Appl. Math. 99 (2000), 209-227.zh_TW