Discrete Poisson equation: Difference between revisions

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(Lines between columns and rows for matrix A.)
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{{Use American English|date = March 2019}}
{{Short description|Finite difference equation}}
{{Use mdy dates|date = March 2019}}
{{More footnotes|date=April 2009}}
In [[mathematics]], the '''discrete Poisson equation''' is the [[finite difference]] analog of the [[Poisson equation]]. In it, the [[discrete Laplace operator]] takes the place of the [[Laplace operator]]. The discrete Poisson equation is frequently used in [[numerical analysis]] as a stand-in for the continuous Poisson equation, although it is also studied in its own right as a topic in [[discrete mathematics]].