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| 1) | Degree | (2023-04-30) |
| 2) | degree of differential equation | (2022-07-20) |
| 3) | Degree of Freedom | (2022-05-19) |
| 4) | Multi Degree of Freedom System | (2023-05-08) |
| 5) | One Degree of Freedom System | (2022-01-13) |
| 6) | Polynomial Degree | (2022-08-15) |
| 7) | Tree Degree | (2023-05-25) |