arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2208.04490math.COcs.SCmath.AG
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多元解析组合学的同伦技巧

Homotopy techniques for analytic combinatorics in several variables

Kisun Lee, Stephen Melczer, Josip Smolčić

摘要:

我们结合同伦连续求解器的工具,在几个变量的分析组合学的方法,给出第一个实用的算法和实现的渐近的多元有理生成函数不依赖于一个非算法检查的“组合”非负性假设。我们的同伦实现终止的例子从文献中的三个变量,我们还描述了启发式方法,终止和正确预测渐近行为在合理的时间内的例子,甚至更高的维度。我们的结果是实现在朱莉娅,通过使用的HomotopyContinuation.jl包,我们提供了一个选择的例子和基准。

英文摘要:

We combine tools from homotopy continuation solvers with the methods of analytic combinatorics in several variables to give the first practical algorithm and implementation for the asymptotics of multivariate rational generating functions not relying on a non-algorithmically checkable `combinatorial' non-negativity assumption. Our homotopy implementation terminates on examples from the literature in three variables, and we additionally describe heuristic methods that terminate and correctly predict asymptotic behaviour in reasonable time on examples in even higher dimension. Our results are implemented in Julia, through the use of the HomotopyContinuation.jl package, and we provide a selection of examples and benchmarks.

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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