New Pumping Technique for 2-dimensional VASS
New Pumping Technique for 2-dimensional VASS
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二维 VASS 的新泵浦技术
DOI:
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发表时间:
2019
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通讯作者:
Radoslaw Piórkowski
中科院分区:
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作者:
Wojciech Czerwinski;S. Lasota;Christof Löding;Radoslaw Piórkowski
We propose a new pumping technique for 2-dimensional vector addition systems with states (2-VASS) building on natural geometric properties of runs. We illustrate its applicability by reproving an exponential bound on the length of the shortest accepting run, and by proving a new pumping lemma for languages of 2-VASS. The technique is expected to be useful for settling questions concerning languages of 2-VASS, e.g., for establishing decidability status of the regular separability problem.