Abstract
We complete the understanding of the question of the essential self-adjoitness and non-essential self-adjointness of the discrete Laplacian acting on 1-forms. We also discuss the notion of completeness. Moreover, we study the relationship between the adjacency matrix of the line graph and the discrete Laplacian acting on 1-forms. Thanks to it, we exhibit a condition that ensures that the adjacency matrix on line graph is bounded from below and not essentially self-adjoint.
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Acknowledgments
SG was partially supported by the ANR project GeRaSic (ANR-13-BS01-0007-01) and SQFT (ANR-12-JS01-0008-01). HB enjoyed the hospitality of Bordeaux University when this work started. We would like to thank the anonymous referee, Colette Anné, Michel Bonnefont, Delio Mugnolo, and Nabila Torki-Hamza for useful discussions and comments on the text.
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Baloudi, H., Golénia, S. & Jeribi, A. The Adjacency Matrix and the Discrete Laplacian Acting on Forms. Math Phys Anal Geom 22, 9 (2019). https://doi.org/10.1007/s11040-019-9301-0
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DOI: https://doi.org/10.1007/s11040-019-9301-0