COCOON 2009: Computing and Combinatorics pp 106-115

# Reconstruction of Interval Graphs

• Masashi Kiyomi
• Toshiki Saitoh
• Ryuhei Uehara
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5609)

## Abstract

The graph reconstruction conjecture is a long-standing open problem in graph theory. There are many algorithmic studies related it besides mathematical studies, such as DECK CHECKING, LEGITIMATE DECK, PREIMAGE CONSTRUCTION, and PREIMAGE COUNTING. We study these algorithmic problems limiting the graph class to interval graphs. Since we can solve GRAPH ISOMORPHISM for interval graphs in polynomial time, DECK CHECKING for interval graphs is easily done in polynomial time. Since the number of interval graphs that can be obtained from an interval graph by adding a vertex and edges incident to it can be exponentially large, developing polynomial time algorithms for LEGITIMATE DECK, PREIMAGE CONSTRUCTION, and PREIMAGE COUNTING on interval graphs is not trivial. We present that these three problems are solvable in polynomial time on interval graphs.

## Keywords

the graph reconstruction conjecture interval graphs polynomial time algorithm

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## Authors and Affiliations

• Masashi Kiyomi
• 1
• Toshiki Saitoh
• 1
• Ryuhei Uehara
• 1
1. 1.School of Information ScienceJAIST, AsahidaiIshikawaJapan

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