利用矩阵的谱范数估计，研究了连续T- S型模糊控制器的稳定性，给出模糊开环系统稳定的充分条件。

Based on 2 norm estimate of matrix, stability of T S type fuzzy controller is studied and several sufficient conditions of open loop system are proposed .

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在第二章中，作者以谱分解、函数演算等为工具，给出一些重要的算子不等式与范数不等式。

In this chapter, we give some operator inequalities and norm inequalities by means of spectral decomposition and functional calculus.

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结论算子范数对于估计有界线性算子乘积与和的谱半径是至关重要的。

Conclusion Norm of operator is very important to estimate the spectral radius of operator.

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