Abstract
The paper investigates relationship between algebraic expressions and graphs. Our intention is to simplify graph expressions and eventually find their shortest representations. We prove the decomposition lemma which asserts that the shortest expression of a subgraph of a graph G is not larger than the shortest expression of G. Using this finding, we estimate an upper bound of a size of the shortest expression for any two-terminal directed acyclic graph.
Original language | English |
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Pages (from-to) | 109-116 |
Number of pages | 8 |
Journal | Electronic Notes in Discrete Mathematics |
Volume | 63 |
DOIs | |
State | Published - Dec 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 Elsevier B.V.
Keywords
- Two-terminal directed acyclic graph
- algebraic expression
- complexity
- edge-labeled graph
- series-parallel graph