| Symbol | Type | Meaning |
| | Function | Euclidean vector norm | | Function | Ellipsis for the symmetric terms | | Function | Yielding a block diagonal matrix | | Function | Denoting | | Matrix | Identity matrix of appropriate dimensions | , , , | Vector | Input, state, output, perturbation | , , , | Vector | Steady-state values of , , , | , , | Vector | Deviation between , , and , , | , , , | Scalar | The th element in , , , | | Vector | State of the integrator | | Vector | Augmented state | , , , | Matrix | Identified system matrix | , | Matrix | Augmented identified system matrix | , , , | Matrix | Identified system matrix under the th health condition | , | Matrix | Augmented identified system matrix | , , , | Matrix | Nominal system matrix | , , , | Matrix | Norm-bounded uncertainty | | Matrix | Feedback gain matrix | , | Set | Set whose members contain a group of , , , | , | Set | Set whose members contain a group of , | | Matrix | Interval matrix | , | Matrix | Constant matrix | , , | Matrix | Augmented constant matrix | | Matrix | Uncertain matrix satisfying | | Matrix | Augmented uncertain matrix satisfying | | Scalar | Sampling period | | Scalar | Delay/dropout margin | | Scalar | Maximum allowable transmission delay | | Scalar | Maximum allowable number of consecutive packet dropouts | | Set | A disk region of which the center is and the radii is |
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