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Discrete fixed-point theorem
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<p>In <a href="/facts/Discrete_mathematics/XdRUnzUL">discrete mathematics</a>, a discrete fixed-point is a <a href="/facts/Fixed_point_(mathematics)/vVVddTKc">fixed-point</a> for functions defined on finite sets, typically subsets of the integer grid Z n {\displaystyle \mathbb {Z} ^{n}} . </p><p>Discrete fixed-point theorems were developed by Iimura, Murota and Tamura, Chen and Deng and others. Yang provides a survey. </p>