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- W4385848904 abstract "In this paper we prove that a graph is a string graph (the intersection graph of curves in the plane) if and only if it admits a drawing in the plane with certain properties. This also allows us to define an algebraic obstruction, similar to the Van Kampen obstruction to embeddability, which must vanish for every string graph. However, unlike in the case of graph planarity this obstruction is incomplete." @default.
- W4385848904 created "2023-08-16" @default.
- W4385848904 creator A5047373028 @default.
- W4385848904 date "2023-08-13" @default.
- W4385848904 modified "2023-10-16" @default.
- W4385848904 title "A Van Kampen type obstruction for string graphs" @default.
- W4385848904 doi "https://doi.org/10.48550/arxiv.2308.06833" @default.
- W4385848904 hasPublicationYear "2023" @default.
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