Delay-Partitioning Approach to Stability of Linear Discrete-Time Systems with Interval-Like Time-Varying Delay

Table 1

Comparison of the number of decision variables involved in various methods.

Methods	Number of the decision variables
Theorem  1 in [19]	(23𝑛^2+5𝑛)/2
Theorem 3 in [19]	(67𝑛^2+9𝑛)/2
Theorem 1 in [23]	9𝑛^2+3𝑛
Theorem 1 in [18]	13𝑛^2+5𝑛
Proposition 2 in [6]	3𝑛^2+3𝑛
Theorem 1 in [7]	3𝑛^2+3𝑛
Theorem 2 in [30]	(𝑛/2)[𝑛(3𝑚^2+18𝑚+41)+(3𝑚+11)]
Theorem 3.1 in [29]	(𝑛/2)[𝑛(𝑚^2+4𝑚+19)+(𝑚+5)]
Theorem 1	(𝑛/2)𝑛(𝑚^2+5)+(𝑚+5)