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JSchoeberl · Mar 18, 2024 · 572d22a · 572d22a
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diff --git a/_sources/iterative/preconditioning.ipynb b/_sources/iterative/preconditioning.ipynb
@@ -40,7 +40,7 @@
     "We use the preconditioner to obtain the correction from the residuum:\n",
     "\n",
     "$$\n",
-    "\\qquad  x^{k+1} = x^k - \\alpha C^{-1} (b - A x^k)\n",
+    "\\qquad  x^{k+1} = x^k + \\alpha C^{-1} (b - A x^k)\n",
     "$$\n",
     "\n",
     "The error is now propagated as\n",

diff --git a/iterative/preconditioning.html b/iterative/preconditioning.html
@@ -509,7 +509,7 @@ <h2><span class="section-number">53.1. </span>The preconditioned Richardson iter
 <p>We use the preconditioner to obtain the correction from the residuum:</p>
 <div class="math notranslate nohighlight">
 \[
-\qquad  x^{k+1} = x^k - \alpha C^{-1} (b - A x^k)
+\qquad  x^{k+1} = x^k + \alpha C^{-1} (b - A x^k)
 \]</div>
 <p>The error is now propagated as</p>
 <div class="math notranslate nohighlight">

diff --git a/searchindex.js b/searchindex.js