| 1. | Then a is positive semidefinite, negative definite and negative semidefinite .
则A是半正定，负定，半负定的。 |
| 2. | Positive semi-definite matrices are positive definite if and only if they are nonsingular .
正半定矩阵是正定的，当且仅当它们是非奇异矩阵。 |
| 3. | If a symmetrical matrix is positive definite, the determinants of all its minors are also positive .
如果对称矩阵是为正定者，它的所有子式的行列式也都是正的。 |
| 4. | On metapositive difinite of product of complex matrices
关于复矩阵乘积的正定性 |
| 5. | Some properties of complex metapositive definite matrices
复亚正定矩阵的一些性质 |
| 6. | The semidefinite positive on the tensor product of matrix
矩阵张量积的半正定性 |
| 7. | Generalized positive definite matrices and its property
广义正定矩阵及其性质 |
| 8. | On the metapositive definite of complex normal matrices
复正规矩阵的亚正定性 |
| 9. | The classification of positive definite unimodular lattices over
上正定幺模格的分类 |
| 10. | Further researches on generalized positive definite matrices
广义正定矩阵的进一步研究 |
