Signed graphs

@article{Zaslavsky1982SignedG,
  title={Signed graphs},
  author={Thomas Zaslavsky},
  journal={Discret. Appl. Math.},
  year={1982},
  volume={4},
  pages={47-74}
}

On the signed chromatic number of some classes of graphs

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A signed graph is a pair Γ=( G ,σ), where G =( V ( G ), E ( G )) is a graph and σ: E ( G ) → {+1, -1} is the sign function on the edges of G . For a signed graph we consider the least eigenvalue λ(Γ)

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Data in the social sciences can often modeled using signed graphs, graphs where every edge has a sign + or , or marked graphs, graphs where every vertex has a sign + or . The path graph Pk(G) of a

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TLDR
Con conformally indecomposable tensions of T(\Sigma,{\Bbb Z}) are classified as characteristic vectors of signed-graphic directed bonds and a class of characteristic vector of directed semi-bonds and d...
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