*
* This element overcomes the sign conflict issues present in
* traditional Nédélec elements which arise from the edge and face
-* parameterisations used in the basis functions. Therefore, this
+* parameterizations used in the basis functions. Therefore, this
* element should provide consistent results for general quadrilateral
* and hexahedral elements.
*
* shape functions.
*
* The main quantities which are stored are associated with edge and face
- * parameterisations. These are:
+ * parameterizations. These are:
* <ul>
* <li> $\lambda_{i}$ - trilinear function, equal to one at the $i$-th vertex
* and zero at all other vertices.</li>
* </ul>
*
* The definitions of these functionals, as well as the edge and face
- * parametrisations and edge and face extension parameters, can be found on
+ * parameterizations and edge and face extension parameters, can be found on
* page 82 of Zaglmayr's thesis. The details of the definition of the
* globally-defined edge and face orientations can be found on page 67.
*/
mutable std::vector<std::vector<DerivativeForm<1, dim, dim> > > shape_grads;
/**
- * Storage for all possible edge parameterisation between vertices. These
+ * Storage for all possible edge parameterization between vertices. These
* are required in the computation of edge- and face-based DoFs, which are
* cell-dependent.
*
- * The edge parameterisation of an edge, E, starting at vertex i and ending
+ * The edge parameterization of an edge, E, starting at vertex i and ending
* at vertex $j$ is given by $\sigma_{E} = \sigma_{i} - \sigma{j}$.
*
- * sigma_imj_values[q][i][j] stores the value of the edge parametrisation
+ * sigma_imj_values[q][i][j] stores the value of the edge parameterization
* connected by vertices $i$ and $j$ at the q-th quadrature point.
*
* Note that not all of the $i$ and $j$ combinations result in valid edges on
std::vector<std::vector<std::vector<double> > > sigma_imj_values;
/**
- * Storage for gradients of all possible edge parameterisations between
+ * Storage for gradients of all possible edge parameterizations between
* vertices. These are required in the computation of edge- and face-based
* DoFs, which are cell-dependent. Note that the components of the gradient
* are constant.
*
- * The edge parameterisation of an edge, $E$, starting at vertex $i$ and ending
+ * The edge parameterization of an edge, $E$, starting at vertex $i$ and ending
* at vertex $j$ is given by $\sigma_{E} = \sigma_{i} - \sigma{j}$.
*
- * sigma_imj_grads[i][j][d] stores the gradient of the edge parametrisation
+ * sigma_imj_grads[i][j][d] stores the gradient of the edge parameterization
* connected by vertices $i$ and $j$ in component $d$.
*
- * Note that the gradient of the edge parametrisation is constant on an
+ * Note that the gradient of the edge parameterization is constant on an
* edge, so we do not need to store it at every quadrature point.
*/
std::vector<std::vector<std::vector<double> > > sigma_imj_grads;
/**
- * Storage for values of edge parametrisations at quadrature points. These
+ * Storage for values of edge parameterizations at quadrature points. These
* are stored for the 12 edges such that the global vertex numbering would
* follow the order defined by the "standard" deal.II cell.
*
- * edge_sigma_values[m][q] stores the edge parameterisation value at the
+ * edge_sigma_values[m][q] stores the edge parameterization value at the
* q-th quadrature point on edge m.
*
* These values change with the orientation of the edges of a physical cell
std::vector<std::vector<double> > edge_sigma_values;
/**
- * Storage for gradients of edge parametrisation at quadrature points.
+ * Storage for gradients of edge parameterization at quadrature points.
* These are stored for the 12 edges such that the global vertex numbering
* would follow the order defined by the "standard" deal.II cell.
*
- * edge_sigma_grads[m][d] stores the gradient of the edge parameterisation
+ * edge_sigma_grads[m][d] stores the gradient of the edge parameterization
* for component d on edge m.
*
* These values change with the orientation of the edges of a physical cell