Extensions of Signed Graphs
Given a signed graph (G, Σ) with an embedding on a surface S, we are interested in "extending" (G, Σ) by adding edges and splitting vertices, such that the resulting graph has no embedding on S. We show (assuming 3-connectivity for (G, Σ)) that there are a small number of minimal extension...
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| Language: | en |
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2014
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| Online Access: | http://hdl.handle.net/10012/8387 |