2 problems

Let $\{\mathscr{I},\bm{\gamma},\bm\ell,\ell^{(2)},\sigma,\mathfrak q\}$ be $\mathscr{I}$-structure data of odd dimension $\mathfrak n\ge 7$ admitting a cross-section…

Let the Einstein vacuum equations be posed as a scattering problem with conformally regular data on an ingoing null hypersurface and no incoming radiation from past null infinity.…