\(a\): |
A typical link |

\(p\): |
A typical path |

\(w\): |
A typical demand market |

\(n_M\): |
Possible production locations |

\(n_D\): |
Distribution centers for storage |

\(J\): |
Number of demand markets |

\(W\): |
Set of demand markets |

\(\rho_w\): |
Price at a demand market \(w\) |

\(\rho\): |
A vector of prices |

\(\hat c_a\): |
Total cost on link \(a\) |

\(\hat c\): |
A vector of total costs |

\(\alpha_a\): |
A positive productivity factor of link \(a\) reflecting how much an hour of labor will yield in terms of product flow on that link |

\(\alpha\): |
A vector of link productivity factors |

\(\bar l\): |
Bound on labor, which will be a vector if the constraints are on individual links [@126302; @126303] |

\(\pi_a\): |
Wage on link \(a\) |

\(\pi\): |
A vector of wages that are paid for an hour of labor on a link |