In general, all entries in the matrix $\matrix B_{i,j,K}$ are non-zero and the mass-lumping technique using the numerical integration from \cref{eq:mass_lumping_numerical_integration} cannot be applied.
\todo{It can!}
In general, all entries in the matrix $\matrix B_{i,j,K}$ are non-zero.
% and the mass-lumping technique using the numerical integration from \cref{eq:mass_lumping_numerical_integration} cannot be applied.\todo{It can!}
The inverse matrix $\matrix b_{i,j,K}$ is computed using the LU factorization.
\clearpage
@@ -287,6 +287,6 @@ Using this transformation to calculate the integral leads to
+ 20 \vec P_e \vec P_f \right) .
\end{align}
In general, all entries in the matrix $\matrix B_{i,j,K}$ are non-zero and the mass-lumping technique using the numerical integration from \cref{eq:mass_lumping_numerical_integration} cannot be applied.
\todo{It can!}
In general, all entries in the matrix $\matrix B_{i,j,K}$ are non-zero.
% and the mass-lumping technique using the numerical integration from \cref{eq:mass_lumping_numerical_integration} cannot be applied.\todo{It can!}
The inverse matrix $\matrix b_{i,j,K}$ is computed using the LU factorization.