A **Closure problem** is a problem in graph theory for finding a set of vertices in a directed graph such that there are no edges from the set to the rest of the graph. More specifically, the minimum closure problem asks for a set of this type with the minimum possible weight in a weighted graph.

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**Closure Problem**- History

... Picard was working on the open-pit mining

**problem**and during that time worked on generalizing the selection

**problem**to the

**closure problem**... Picard's contribution introduced the

**closure problem**to the mining industry ...

**Closure Problem**

... A

**closure problem**arises in the Reynolds-averaged Navier-Stokes (RANS) equation because of the non-linear term from the convective acceleration, known as the ...

### Famous quotes containing the word problem:

“If we parents accept that problems are an essential part of life’s challenges, rather than reacting to every *problem* as if something has gone wrong with universe that’s supposed to be perfect, we can demonstrate serenity and confidence in *problem* solving for our kids....By telling them that we know they have a *problem* and we know they can solve it, we can pass on a realistic attitude as well as empower our children with self-confidence and a sense of their own worth.”

—Barbara Coloroso (20th century)