The Infinite Interface Limit of Multiple-Region Relaxed MHD
  We show the stepped-pressure equilibria that are obtained from a generalization of Taylor relaxation known as multi-region, relaxed MHD (MRXMHD) are also generalizations of ideal MHD. We show this by proving that as the number of plasma regions becomes infinite, MRXMHD reduces to ideal MHD. Numerical convergence studies demonstrating this limit are presented. 
G.R. Dennis and S.R. Hudson and R.L. Dewar and M.J. Hole
physics.plasm-ph