  The separation of the connected and disconnected sea partons, which were
uncovered in the Euclidean path-integral formulation of the hadronic tensor, is
accommodated with the CT18 parametrization of the global analysis of the parton
distribution functions (PDFs). This is achieved with the help of the distinct
small $x$ behaviors of these two sea parton components and the constraint from
the lattice calculation of the ratio of the strange momentum fraction to that
of the ${\bar u}$ or ${\bar d}$ in the disconnected insertion. This allows
lattice calculations of separate flavors in both the connected and disconnected
insertions to be directly compared with the global analysis results term by
term.
