We give the general solution of the stationary problem of 2+1 dimensional gravity in presence of extended sources, also endowed with angular momentum. We solve explicitly the compact support property of the energy momentum tensor and we apply the results to the study of closed time-like curves. In the case of rotational symmetry we prove that the weak energy condition combined with the absence ...

It’s commonly recognized that Avant-garde creativity begins with almost complete negation and deconstruction of previous cultural background. But examination architects’ creative work shows such an act is preceded by their deep study architectural history form creation derivation own sets universal forms assemblage methods. The purpose essay to reconstruct the process architect reveal inclusion...

Despite the popularity of stochastic parsers, symbolic parsing still has some advantages, but is not practical without an effective mechanism for selecting among alternative analyses. This paper describes the symbolic preference system of a hybrid parser that combines a shallow parser with an overlay parser that builds on the chunks. The hybrid currently equals or exceeds most stochastic parser...