Fixed formula typesetting in schur_complement linear operator doc.

Fixes #2049 .

diff --git a/include/deal.II/lac/schur_complement.h b/include/deal.II/lac/schur_complement.h
index 45b2c17de4f180baa6c2a3f061c2e66969594480..ba987d3d6ff42e3f658ecfb2cf875a1f652db3f5 100644 (file)
--- a/include/deal.II/lac/schur_complement.h
+++ b/include/deal.II/lac/schur_complement.h
@@ -71,8 +71,8 @@ DEAL_II_NAMESPACE_OPEN
  * Assuming that $ A,D $ are both square and invertible, we could
  * then perform one of two possible substitutions,
  * @f{eqnarray*}
-     (3) \quad x &=& A^{-1}(f - By) \quad \textnormal{from} \quad (1) \\
-     (4) \quad y &=& D^{-1}(g - Cx) \quad \textnormal{from} \quad (2) ,
+     (3) \quad x &=& A^{-1}(f - By) \quad \text{from} \quad (1) \\
+     (4) \quad y &=& D^{-1}(g - Cx) \quad \text{from} \quad (2) ,
  * @f}
  * which amount to performing block Gaussian elimination on
  * this system of equations.