T | Number of time periods. |
N | Number of products. |
t | Index of time periods. Where |
| Index of products. Where |
| Demand for item |
| Unit production cost of finished product |
| Setup cost of finished product |
| Unit holding cost of finished product |
| Available capacity at period t. |
| External demand for item |
| Initial inventory of item |
| Launching production of item |
| Requires units of the joint resource. |
| represents the aggregate demand in period t, i.e. |