Square Signed Graph


The square graph \(G^2\) of a graph \(G=(V,E)\) is a graph with same vertex set as G, and the vertices are adjacent in \(G^2\) when their distance in G is at most two. In this paper, we characterize signed graph (or sigraph) which is a square root signed graph of some signed graph. Also, we find whether for a given signed graph its square signed graph and line of square signed graph are balanced. Each theorem is supported by respective algorithms.

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Funding was provided by South Asian University.

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Correspondence to Deepa Sinha.

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Sinha, D., Sharma, D. Square Signed Graph. Natl. Acad. Sci. Lett. 42, 513–518 (2019). https://doi.org/10.1007/s40009-018-0781-4

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  • Square signed graph
  • Balance signed graph
  • Line signed graph
  • Algorithm