Regge Calculus Package
----------------------

Package for computing various properties including the action of an
arbitrary triangulation of a space-time in Regge Calculus.
 
Variable:     Description:
 
i4            The list of 4-simplices. This defines your triangulated
              space-time. You have to supply the list by writing it
              in entry 3 of the Questionnaire (Be careful not to alter
              the frame of the Questionnaire when filling in. You can
              add extra lines here if necessary.) For example, if you
              label the vertices of the triangulation by numbers,
              a 4-simplex of the list looks like {0,3,7,1,4}. If you
              prefer, you may write here an algorithm generating the
              list.
 
s[ej,ek]      The length-square of the edge between vertices ej and ek.
              It defines the metric symmetries of your triangulation.
              You specify these similarly (by listing or generating)
              in entry 4.
 
i3            The list of triangles.
i2            The list of edges.
vk[ej,ek,...] The volume of the k-simplex {ej,ek,...}.
nei[o,e1,e2]  The 4-simplices with triangle {o,e1,e2} incident.
defi[o,e1,e2] The deficit angle at triangle {o,e1,e2}.
l2I           The Regge Action I times the square of the Planck
              length l.