## A preconditioner for a FETI-DP method for mortar element discretization of a 4th order problem in 2D

### Summary

Summary: In this paper a parallel preconditioner for a FETI-DP formulation for a mortar discretization of a fourth order problem is presented and analyzed. We show that the condition number of the preconditioned FETI-DP operator is proportional to , where and are mesh sizes. $\textcent \?\sterling$??§?$\copyright \?\?\?\textcent$- ?? -- ??! ?" ? ?

65N30, 65N55

### Keywords/Phrases

FETI-DP, mortar, nonmatching meshes, finite element, preconditioner