What does $\displaystyle \frac{| \tilde x^{(0)} - x^{(0)} | } {max \lbrace 1, | x^{(0)} | \rbrace} \ge \epsilon $ mean, particularly the comma in the denominator? And do the brackets have any special meaning wrt the $\displaystyle x^{(0)}$?
What does $\displaystyle \frac{| \tilde x^{(0)} - x^{(0)} | } {max \lbrace 1, | x^{(0)} | \rbrace} \ge \epsilon $ mean, particularly the comma in the denominator? And do the brackets have any special meaning wrt the $\displaystyle x^{(0)}$?