East Tennessee State University
Decompositions of Mixed Graphs with Partial Orientations of the P<sub>4</sub>.
Abstract
dc:description.abstract<p>A decomposition <em>D</em> of a graph <em>H</em> by a graph <em>G</em> is a partition of the edge set of <em>H</em> such that the subgraph induced by the edges in each part of the partition is isomorphic to <em>G</em>. A <em>mixed graph</em> on <em>V</em> vertices is an ordered pair (<em>V</em>,<em>C</em>), where <em>V</em> is a set of vertices, |<em>V</em>| = <em>v</em>, and <em>C</em> is a set of ordered and unordered pairs, denoted (<em>x</em>, <em>y</em>) and [<em>x</em>, <em>y</em>] respectively, of elements of <em>V</em> [8]. An ordered pair (<em>x</em>, <em>y</em>) ∈ <em>C</em> is called an <em>arc</em> of (<em>V</em>,<em>C</em>) and an unordered pair [<em>x</em>, <em>y</em>] ∈ <em>C</em> is called an <em>edge</em> of graph (<em>V</em>,<em>C</em>). A path on <em>n</em> vertices is denoted as <em>P<sub>n</sub></em>. A <em>partial orientation</em> on <em>G</em> is obtained by replacing each edge [<em>x</em>, <em>y</em>] ∈ <em>E</em>(<em>G</em>) with either (<em>x</em>, <em>y</em>), (<em>y</em>, <em>x</em>), or [<em>x</em>, <em>y</em>] in such a way that there are twice as many arcs as edges. The <em>complete mixed graph</em> on <em>v</em> vertices, denoted <em>M<sub>v</sub></em>, is the mixed graph (<em>V</em>,<em>C</em>) where for every pair of distinct vertices <em>v</em><sub>1</sub>, <em>v</em><sub>2</sub> ∈ <em>V</em> , we have {(<em>v</em><sub>1</sub>, <em>v</em><sub>2</sub>), (<em>v</em><sub>2</sub>, <em>v</em><sub>1</sub>), [<em>v</em><sub>1</sub>, <em>v</em><sub>2</sub>]} ⊂ <em>C</em>. The goal of this thesis is to establish necessary and sufficient conditions for decomposition of <em>M<sub>v</sub></em> by all possible partial orientations of <em>P</em><sub>4</sub>.</p>
Degree
thesis:*- Name thesis:degree_name
- MS (Master of Science)
- Level thesis:degree_level
- Thesis - unrestricted
- Discipline thesis:degree_discipline
- Mathematical Sciences
- Year dc:date.issued
- 2009
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Meadows, Adam M.
Subjects
dc:subject × 7Rights
dc:rights- Statement dc:rights
-
- Copyright by the authors.
Identifiers
dc:identifier.*- Repository record dc:identifier
- https://dc.etsu.edu/etd/1870
- OAI identifier oai:identifier
- oai:dc.etsu.edu:etd-3222