As we have observed, the constraints of a meaningful linear program must include at least one linear inequality, but otherwise they may be composed of linear equations, linear inequalities, or some of each.
CITATION STYLE
Cottle, R. W., & Thapa, M. N. (2017). Linear equations and inequalities. In International Series in Operations Research and Management Science (Vol. 253, pp. 29–60). Springer New York LLC. https://doi.org/10.1007/978-1-4939-7055-1_2
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