  We consider resurgence for the nonconformal Bjorken flow with Fermi-Dirac and
Bose-Einstein statistics on the extended relaxation-time approximation. We
firstly consider full formal transseries expanded around the equilibrium and
then construct the resurgent relation by looking to the structure of Borel
transformed ODEs. We form a conjecture of the resurgent relation based on the
considerations that Stokes constants constituting of the resurgent relation
originate only from singularities of dissipative variables on the Borel plane
and that the other variables such as temperature and chemical potential become
Borel nonsummable through nonlinear terms with the dissipative variables. We
numerically check the conjecture for fundamental variables by explicitly
evaluating values of the dominant Stokes constant depending on initial
conditions and a particle mass. We also make comments on some issues related to
transseries structure and resurgence such as the case of broken $U(1)$
symmetry, the massless case, generalized relaxation-time, and attractor
solution.
