Document Type

Article

Publication Date

1-1-2014

Abstract

Archdeacon proved that projective-planar graphs are characterized by 35 excluded minors. Using this result we show that internally 4-connected projective-planar graphs are characterized by 23 internally 4-connected excluded minors. © 2014 Elsevier Inc.

Publication Source (Journal or Book title)

Journal of Combinatorial Theory. Series B

First Page

123

Last Page

138

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