If given a primal LP problem with an optimal solution and the values of its optimal variables. Is there a way to know if the optimal of the dual is degenerate?
Check this page:
https://math.stackexchange.com/questions/8393/primal-degenerate-optimal-dual-unique-optimal
Check these:
https://people.orie.cornell.edu/dpw/orie6300/fall2008/Lectures/lec08.pdf
https://pdfs.semanticscholar.org/33ab/69292edd8a5891dc6c67640ef755aa4cf634.pdf
For linear programming problems, if the primal has nonunique optimal solutions, then its dual is degenrated .
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