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Graphs with nonnegative Bakry-Émery curvature without quadrilateral

Year: 2024
Type: preprint
Abstract: The definition of Ricci curvature on graphs in Bakry-Émery’s sense based on curvature dimension condition was introduced by Lin and Yau [Math. Res. Lett. 17 (2010), pp. 343–356]. Hua and Lin [Comm. Anal. Geom. 27 (2019), pp. 619–638] classified unweighted graphs satisfying the curvature dimension condition C D ( 0 , ∞ ) CD(0,\infty ) whose girth are at least five. In this paper, we classify all of connected unweighted normalized C 4 C_4 -free graphs satisfying curvature dimension condition C D ( 0 , ∞ ) CD(0,\infty ) for minimum degree at least 2 and the case with non-normalized Laplacian without degree condition.
Language: English
Open Access status: green
OpenAlex ID: W4404953231
Cites: 22
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Related to: 10