Comments on “The matrix sign function and computations in systems” by E. D. Denman and A. N. Beavers
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摘要
The suggested method of Denman and Beavers for solving a Lyapunov matrix equation is shown to fail when the solution is not unique. It is also shown that sgnA can be used to determine the inertia of A.
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论文评审过程：Available online 22 March 2002.
论文官网地址：https://doi.org/10.1016/0096-3003(78)90012-7
