Status and Future Prospects of Combining the Results of Three-Flavor Neutrino Oscillation Experiments

Neutrino oscillations have been actively studied for the last few decades. At the moment, the unknown parameters of the theory are the neutrino mass ordering and the phase of CP violation in the lepton sector. One of the ways to increase the sensitivity to these parameters is the combination of the results of several experiments. For many years phenomenologists have been doing such unification with certain approximations taken into account, so called global fits. Recently, experiments themselves started to produce the joint fits. In the past year T2K $$+$$ Super-Kamiokande and T2K $$+$$ NOvA announced their first results. In this paper status of both joint and global fits will be discussed as well as their future prospects.