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Table 1 Number of CG iterations for \(\pmb{\theta\to0}\) , \(\pmb{h=0.359}\) , \(\pmb{\varepsilon=0}\) ; the discretization is based on \(\pmb{R^{2}}\) edge functions

From: An a priori error estimate for interior penalty discretizations of the Curl-Curl operator on non-conforming meshes

θ [rad]

No preconditioner

ILUPACK

10−1

1,118

135

10−2

3,705

214

10−3

3,731

320

10−4

6,102

426

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