The reversing number of a diagraph

Jean Pierre Barthélemy; Olivier Hudry; Garth Isaak; Fred S. Roberts; Barry Tesman

doi:10.1016/0166-218X(94)00042-C

The reversing number of a diagraph

Jean Pierre Barthélemy, Olivier Hudry, Garth Isaak, Fred S. Roberts, Barry Tesman

Research output: Contribution to journal › Article › peer-review

Abstract

A minimum reversing set of a diagraph is a smallest sized set of arcs which when reversed makes the diagraph acyclic. We investigate a related issue: Given an acyclic diagraph D, what is the size of a smallest tournament T which has the arc set of D as a minimun reversing set? We show that such a T always exists and define the reversing number of an acyclic diagraph to be the number of vertices in T minus the number of vertices in D. We also derive bounds and exact values of the reversing number for certain classes of acyclic diagraphs.

Original language	English
Pages (from-to)	39-76
Number of pages	38
Journal	Discrete Applied Mathematics
Volume	60
Issue number	1-3
DOIs	https://doi.org/10.1016/0166-218X(94)00042-C
Publication status	Published - 23 Jun 1995
Externally published	Yes

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title = "The reversing number of a diagraph",

abstract = "A minimum reversing set of a diagraph is a smallest sized set of arcs which when reversed makes the diagraph acyclic. We investigate a related issue: Given an acyclic diagraph D, what is the size of a smallest tournament T which has the arc set of D as a minimun reversing set? We show that such a T always exists and define the reversing number of an acyclic diagraph to be the number of vertices in T minus the number of vertices in D. We also derive bounds and exact values of the reversing number for certain classes of acyclic diagraphs.",

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AU - Barthélemy, Jean Pierre

AU - Hudry, Olivier

AU - Isaak, Garth

AU - Roberts, Fred S.

AU - Tesman, Barry

PY - 1995/6/23

Y1 - 1995/6/23

N2 - A minimum reversing set of a diagraph is a smallest sized set of arcs which when reversed makes the diagraph acyclic. We investigate a related issue: Given an acyclic diagraph D, what is the size of a smallest tournament T which has the arc set of D as a minimun reversing set? We show that such a T always exists and define the reversing number of an acyclic diagraph to be the number of vertices in T minus the number of vertices in D. We also derive bounds and exact values of the reversing number for certain classes of acyclic diagraphs.

AB - A minimum reversing set of a diagraph is a smallest sized set of arcs which when reversed makes the diagraph acyclic. We investigate a related issue: Given an acyclic diagraph D, what is the size of a smallest tournament T which has the arc set of D as a minimun reversing set? We show that such a T always exists and define the reversing number of an acyclic diagraph to be the number of vertices in T minus the number of vertices in D. We also derive bounds and exact values of the reversing number for certain classes of acyclic diagraphs.

U2 - 10.1016/0166-218X(94)00042-C

DO - 10.1016/0166-218X(94)00042-C

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SP - 39

EP - 76

JO - Discrete Applied Mathematics

JF - Discrete Applied Mathematics

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ER -

The reversing number of a diagraph

Abstract

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