Expected improvements in polarized parton distribution uncertainties from, proposed, Electron Ion Collider using a Global analysis approach.

Parton distribution functions (PDFs) are indispensable in any calculation of high energy processes involving hadrons. Global analysis of all the experimental data over a wide range of longitudinal momentum fraction of the partons, $x$, and a well resolved momentum scale, $Q^2$, is a way to extract the PDFs. A high luminosity ($>10^{33-34}$ $cm^{-2} s^{-1}$), high energy ($\sqrt(s)$ = 30 to 100 GeV) Electron-Ion-Collider (EIC) will allow to access the kinematic regime between that of HERA and of the fixed-target experiments with much higher statistics. Thus a global analysis including the EIC data will allow us to precisely determine the PDFs in a larger kinematic region. Since EIC will run with a polarized nucleon beam, an extraction of gluon polarization, $\Delta G$, using global analysis will be a major goal for the spin community at this facility. We will present results and improvements in uncertainties we can expect, coming from EIC, on polarized PDFs from global analysis.