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arXiv 0904.3588cs.LO
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具有非线性约束的线性规划的终止性

Termination of Linear Programs with Nonlinear Constraints

Bican Xia, Zhihai Zhang

摘要:

Tiwari通过Jordan形式和特征向量计算证明了实数上线性规划(具有线性循环条件和更新的循环)的终止性是可判定的。布雷弗曼证明了它在整数上也是可判定的。本文研究了实数和整数上具有多项式循环条件和线性更新的循环的终止性。首先,我们证明了这种循环的终止整数是不可判定的。其次,在一个假设条件下,我们给出了一个完整的算法来判定一类实数上的此类规划的终止性。我们的方法在精神上类似于蒂瓦里,但使用不同的技术。最后,我们通过构造一个循环,将线性规划的终止性问题归结为另一个与数论和遍历理论有关的判定问题,并猜想其不可判定,从而推测了实数上具有多项式循环条件的线性规划的终止性一般是不可判定的.

英文摘要:

Tiwari proved that termination of linear programs (loops with linear loop conditions and updates) over the reals is decidable through Jordan forms and eigenvectors computation. Braverman proved that it is also decidable over the integers. In this paper, we consider the termination of loops with polynomial loop conditions and linear updates over the reals and integers. First, we prove that the termination of such loops over the integers is undecidable. Second, with an assumption, we provide an complete algorithm to decide the termination of a class of such programs over the reals. Our method is similar to that of Tiwari in spirit but uses different techniques. Finally, we conjecture that the termination of linear programs with polynomial loop conditions over the reals is undecidable in general by %constructing a loop and reducing the problem to another decision problem related to number theory and ergodic theory, which we guess undecidable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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