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The problem

  • Variational error
  • Slow convergence
  • Conjugate gradients breaks down
1mm
\begin{picture}(240,80) \put(20,20){\includegraphics[width=20cm]{grad.eps}} \put... ... \put(115,10){$g^{\alpha}_{\mu}$} \put(185,10){$g_{\alpha}^{\mu}$} \end{picture}

Peter D. Haynes 2001-11-09