Geodesic
Maximum nontrivial convex cover number of join and corona of graphs
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 1 (2021), pp. 93-98.

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Let G be a connected graph. We say that a set S⊆X(G) is convex in G if, for any two vertices x,y∈S, all vertices of every shortest path between x and y are in S. If 3≤|S|≤|X(G)|−1, then S is a nontrivial set. The greatest p≥2 for which there is a cover of G by p nontrivial and convex sets is the maximum nontrivial convex cover number of G. In this paper, we determine the maximum nontrivial convex cover number of join and corona of graphs. 
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Radu Buzatu. Maximum nontrivial convex cover number of join and corona of graphs. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 1 (2021), pp. 93-98. https://geodesic-test.mathdoc.fr/item/BASM_2021_1_a4/

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