Chemical Systems with Limit Cycles.

Chemical Systems with Limit Cycles.
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DOI:
10.1007/s11538-023-01170-3
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发表时间:
2023-07-04
影响因子:
3.5
通讯作者:
--
中科院分区:
数学4区
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--
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化学反应网络(CRN)的动力学通常在质量作用动力学的假设下通过具有多项式右侧的常微分方程(ODE)系统来建模,所述常微分方程描述所涉及的化学物种的浓度的时间演化。对于任意大的整数,我们证明了存在CRN使得它的常微分方程模型至少有K个稳定的极限环。这样的CRN可以用至多二级的反应来构造,只要化学物种的数量随K线性增长。给出了具有K个稳定极限环和至多二阶或七阶动力学的CRN的最小化学物种数和最小化学反应数的界。当化学反应级数与K成线性增长时,只有两种化学物种的CRN可以有K个稳定极限环。
The dynamics of a chemical reaction network (CRN) is often modeled under the assumption of mass action kinetics by a system of ordinary differential equations (ODEs) with polynomial right-hand sides that describe the time evolution of concentrations of chemical species involved. Given an arbitrarily large integer , we show that there exists a CRN such that its ODE model has at least K stable limit cycles. Such a CRN can be constructed with reactions of at most second-order provided that the number of chemical species grows linearly with K. Bounds on the minimal number of chemical species and the minimal number of chemical reactions are presented for CRNs with K stable limit cycles and at most second order or seventh-order kinetics. We also show that CRNs with only two chemical species can have K stable limit cycles, when the order of chemical reactions grows linearly with K.
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发表时间: 2018-07-01
影响因子: 3.9
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