New randomized reductions and faster algorithms for XNFA decision problems under polynomial or bounded ambiguity, extending to other semirings.
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An O(4^{k + k log k} n + n m^2)-time algorithm for TREE CONTAINMENT parameterized by scanwidth k of a given tree-extension, with a matching ETH lower bound of no 2^{o(c log c)} n^{O(1)} algorithm for directed cutwidth c even on binary inputs.
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Algorithms and fine-grained complexity for nondeterministic and symmetric difference automata
New randomized reductions and faster algorithms for XNFA decision problems under polynomial or bounded ambiguity, extending to other semirings.