Geometric grids and tensor operations

Collaboration diagram for Geometric grids and tensor operations:

Topics
	Geometry classes
	Geometry classes with X-point
	Grid refinement
	Tensor-Vector operations
	\( v^i = T^{ij} w_j\)
	Pullback, pushforward, volume
	\( f_i = f( x (\zeta_i,\eta_i), y(\zeta_i,\eta_i)) \), \( \sqrt{g} \)

Detailed Description

These routines form the heart of our geometry free numerical algorithms. They are called by our geometric operators like the Poisson bracket.