Fix an equation typo in step-41

diff --git a/examples/step-41/doc/intro.dox b/examples/step-41/doc/intro.dox
index 8619f14a37e44af485c595011dc8a76e1eeb16ab..5eb82e888ac294eb0bb2939c32771d3f8d2f215d 100644 (file)
--- a/examples/step-41/doc/intro.dox
+++ b/examples/step-41/doc/intro.dox
@@ -314,7 +314,7 @@ This suggest a semismooth Newton step of the form
 \end{pmatrix}
 =
 -\begin{pmatrix}
- (AU^k + \Lambda^k - F)_{\mathcal{F}_k}\\ (AU^k + \Lambda^k - F)_{\mathcal{A}_k}\\ -\Lambda^k_{\mathcal{F}_k}\\ c(B_{\mathcal{A}_k} U^k - G)_{\mathcal{A}_k}
+ (AU^k + B\Lambda^k - F)_{\mathcal{F}_k}\\ (AU^k + B\Lambda^k - F)_{\mathcal{A}_k}\\ -\Lambda^k_{\mathcal{F}_k}\\ c(B_{\mathcal{A}_k} U^k - G)_{\mathcal{A}_k}
 \end{pmatrix},
 @f}
 where we have split matrices $A,B$ as well as vectors in the natural way into