Post Closed as "Not suitable for this site" by Alex M., David Handelman, user44191, ARG, Yemon Choi

occurred May 22, 2020 at 5:08

added a top-level tag; see: https://meta.mathoverflow.net/questions/1457/why-are-mo-tags-formatted-as-they-are

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edited May 20, 2020 at 8:34

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asked May 20, 2020 at 8:24

Do there exist graphs whose adjacency matrix is positive semi-definite?

If so, could you provide examples and specify the conditions under which this occurs? Thank you in advance

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