 = b(00)$.  For example, if $\tau_0({\Delta}) = |{\Delta}(0)_{\ge 0}|$ and $b(0) \ge 0$, then $\tau_0({\Delta})$ is increased by 0. If $\tau_0({\Delta}) = |{\Delta}(0)^F_{[k_{0,0}, k_{0,0} ]}|$ and if $\deg^F 