The cycle-convexity exchange number is NP-hard to compute in general but has polynomial-time algorithms for chained chordal graphs and explicit formulas for strong and lexicographic products.
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Computing the Exchange Number in Graphs with respect to Cycle Convexity
The cycle-convexity exchange number is NP-hard to compute in general but has polynomial-time algorithms for chained chordal graphs and explicit formulas for strong and lexicographic products.