%0 Journal Article %A Gamboa Mutuberria, José Manuel %A Alonso García, María Emilia %A Ruiz Pérez, Javier %T Orderings On Real Surfaces %D 1984 %@ 0764-4442 %U https://hdl.handle.net/20.500.14352/64631 %X After describing explicitly all total orderings in the ring R[[x, y]], we prove that each ordering in the quotient field of the ring of germs of real analytic functions at anirreducible point O of a real analytic surface X is defined by a half-branch of the germ at O of some curve on X, which is analytic off the origin. Then follows an analogous result for real algebraic surfaces. %~