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The reachability problem for vector addition systems with a stack is not elementary

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 نشر من قبل Ranko Lazic
 تاريخ النشر 2013
  مجال البحث الهندسة المعلوماتية
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By adapting the iterative yardstick construction of Stockmeyer, we show that the reachability problem for vector addition systems with a stack does not have elementary complexity. As a corollary, the same lower bound holds for the satisfiability problem for a two-variable first-order logic on trees in which unbounded data may label only leaf nodes. Whether the two problems are decidable remains an open question.



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