diff --git a/include/core/common/wolf.h b/include/core/common/wolf.h
index 42f8fcb325b3eb176193d29d8df2a1fa3c4ac7f4..c3c01ee3d98f12dafbaed43ae30b24a4d97e682a 100644
--- a/include/core/common/wolf.h
+++ b/include/core/common/wolf.h
@@ -84,14 +84,14 @@ namespace Eigen  // Eigen namespace extension
 // 1. Vectors and Matrices
 typedef Matrix<double, 1, 1, RowMajor> Matrix1d;      ///< 2x2 matrix of real double type
 typedef Matrix<double, 6, 6, RowMajor> Matrix6d;      ///< 6x6 matrix of real double type
-//typedef Matrix<double, 7, 7, RowMajor> Matrix7d;      ///< 7x7 matrix of real double type
+typedef Matrix<double, 7, 7, RowMajor> Matrix7d;      ///< 7x7 matrix of real double type
 typedef Matrix<double, 1, 1> Vector1d;                ///< 1-vector of real double type
-//typedef Matrix<double, 5, 1> Vector5d;                ///< 5-vector of real double type
+typedef Matrix<double, 5, 1> Vector5d;                ///< 5-vector of real double type
 typedef Matrix<double, 6, 1> Vector6d;                ///< 6-vector of real double type
 typedef Matrix<double, 7, 1> Vector7d;                ///< 7-vector of real double type
-//typedef Matrix<double, 8, 1> Vector8d;                ///< 8-vector of real double type
-//typedef Matrix<double, 9, 1> Vector9d;                ///< 9-vector of real double type
-//typedef Matrix<double, 10, 1> Vector10d;              ///< 10-vector of real double type
+typedef Matrix<double, 8, 1> Vector8d;                ///< 8-vector of real double type
+typedef Matrix<double, 9, 1> Vector9d;                ///< 9-vector of real double type
+typedef Matrix<double, 10, 1> Vector10d;              ///< 10-vector of real double type
 
 // 2. Sparse matrix
 typedef SparseMatrix<double, RowMajor, int> SparseMatrixd;