7.1 Equations, polarized T3-Gowdy
In the case of polarized Gowdy,
, so that Equations (16) – (19) reduce to
As an aside, it is of interest to note that the set
coincides with the image of a geodesic in
hyperbolic space
. This system of equations should be compared with (11a) – (11d) of [50
] (note,
however, that the variables of [50
] are somewhat different).