- Superconvergence
In
numerical analysis , a superconvergent method is one which converges faster than generally expected. For example in theFinite Element Method approximation toPoisson's equation in two dimensions, using piecewise linear elements, the average error in thegradient is first order. However under certain conditions it's possible to recover the gradient at certain locations within each element to second order.References
*Levine, N.D. "Superconvergent Recovery of the Gradient from Piecewise Linear Finite-element Approximations" IMA J Numer Anal.1985; 5: 407-427
Wikimedia Foundation. 2010.