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arXiv 1503.04688cs.DMmath.CO
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图上的简单动力学

Simple dynamics on graphs

Maximilien Gadouleau, Adrien Richard

摘要:

一个有限动力系统的相互作用图是否可以迫使这个系统具有“复杂”动力学?换句话说,给定一个有限区间的整数$A$,这是有符号的有向图$G$,使得每个有限动力系统$f:A^n\to A^n$与$G$的相互作用图有一个“复杂”的动态?如果$|A|\geq 3$,我们证明不存在这样的带符号有向图。更准确地说,我们证明了,对于每一个有符号的有向图$G$存在一个系统$f:A^n\to A^n$与$G$的相互作用图,收敛到一个唯一的不动点在最多$\lfloor\log_2 n\rfloor+2$步骤。布尔情况$|A|=2$更困难,我们提供了部分答案。我们展示了大类的无符号有向图,它允许布尔动力系统在多项式,线性或常数时间内收敛到一个唯一的不动点。

英文摘要:

Does the interaction graph of a finite dynamical system can force this system to have a "complex" dynamics ? In other words, given a finite interval of integers $A$, which are the signed digraphs $G$ such that every finite dynamical system $f:A^n\to A^n$ with $G$ as interaction graph has a "complex" dynamics ? If $|A|\geq 3$ we prove that no such signed digraph exists. More precisely, we prove that for every signed digraph $G$ there exists a system $f:A^n\to A^n$ with $G$ as interaction graph that converges toward a unique fixed point in at most $\lfloor\log_2 n\rfloor+2$ steps. The boolean case $|A|=2$ is more difficult, and we provide partial answers instead. We exhibit large classes of unsigned digraphs which admit boolean dynamical systems which converge toward a unique fixed point in polynomial, linear or constant time.

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