Before revision:  < t_n < s_n \leq b i=1^{n} \max } W_{s_i and , analogously, downward truncated variation DTV^c_{\mu[a,b]=\sup_n a \leq t_1 < s_1 < ...
After revision:  < t_n < s_n \leq b i=1^{n} \max } W_{s_i and , analogously, downward truncated variation [a,b]=\sup_n a \leq t_1 < s_1 < ...