采用带 AC 符号的重写系统编码博弈;终止性证明结合 type introduction、多排序语义标注,并提出与 AC 兼容的新归约序 AC-MPO(AC-RPO 的弱化版本)。
评估
通过形式化证明论证编码的忠实性和终止性;摘要未提及实现或实验评估。
原文摘要(Abstract)
We present a new encoding of the Battle of Hercules and Hydra as a rewrite system with AC symbols. Unlike earlier term rewriting encodings, it faithfully models any strategy of Hercules to beat Hydra. To prove the termination of our encoding, we employ type introduction in connection with many-sorted semantic labeling for AC rewriting and AC-MPO, a new AC compatible reduction order that can be seen as a much weakened version of AC-RPO.
@article{HirokawaM25,
title = {Hydra Battles and AC Termination},
author = {Nao Hirokawa and Aart Middeldorp},
journal = {Logical Methods in Computer Science},
volume = {Volume 21, Issue 2},
year = {2025},
doi = {10.46298/lmcs-21(2:29)2025}
}