First integrals of anti-symmetric replicator equations (Q2718011)

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scientific article; zbMATH DE number 1606230
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First integrals of anti-symmetric replicator equations
scientific article; zbMATH DE number 1606230

    Statements

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    21 January 2002
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    replicator equation
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    Lotka-Volterra equation
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    first integrals
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    graphs
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    First integrals of anti-symmetric replicator equations (English)
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    The authors study the system \(\dot x_i = x_i( \sum_{j=1}^n a_{ij}x_j)\), \(i=1,2,\ldots,n\), with an anti-symmetric real \(n\times n\)-matrix \(A\), i.e., \(A^T=-A\). The functions \(\varphi_1=x_1+\ldots+x_n\) and \(\varphi_n=\prod_{i=1}^n x_i^{p_i}\), with \((p_1,\ldots,p_n)\in \operatorname {Ker}A\), are first integrals. By using a combinatorial approach, additional first integrals are obtained.
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