Introduces k-neighborhood ideals NI_k(G) of graphs and studies their Castelnuovo-Mumford regularity, projective dimension, and Cohen-Macaulayness with combinatorial characterizations in the degree-vector and edge-ideal cases.
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$\textbf{k}$-neighborhood ideals of graphs
Introduces k-neighborhood ideals NI_k(G) of graphs and studies their Castelnuovo-Mumford regularity, projective dimension, and Cohen-Macaulayness with combinatorial characterizations in the degree-vector and edge-ideal cases.