Edge Multiway Cut and Node Multiway Cut are NP-complete on subcubic graphs
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We show that Edge Multiway Cut (also called Multiterminal Cut) and Node Multiway Cut are NP-complete on graphs of maximum degree 3 (also known as subcubic graphs). This improves on a previous degree bound of 11. Our NP-completeness result holds even for subcubic graphs that are planar.
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