A first-order purely frame-formulation of General Relativity
  In the gauge natural bundle framework a new space is introduced and a first-order purely frame-formulation of General Relativity is obtained. 
R. Cianci (1), S. Vignolo (1) and D. Bruno (2) ((1) DIPTEM - Facolta'   di Ingegneria - Universita' di Genova, (2) Dipartime...