add some more math mode

src/t8_geometry/t8_geometry_base.hxx

@@ -73,8 +73,8 @@ struct t8_geometry
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  glreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    */
   virtual void
   t8_geom_evaluate_jacobian (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, double *jacobian) const

src/t8_geometry/t8_geometry_implementations/t8_geometry_analytic.hxx

@@ -100,8 +100,8 @@ struct t8_geometry_analytic: public t8_geometry
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    * \note The jacobian will be
    *            (1)              (1 0)             (1 0 0)
    * dim 1: J = (0)   dim 2: J = (0 1)  dim 3: J = (0 1 0)

src/t8_geometry/t8_geometry_implementations/t8_geometry_linear.hxx

@@ -65,8 +65,8 @@ struct t8_geometry_linear: public t8_geometry_with_vertices
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    */
   virtual void
   t8_geom_evaluate_jacobian (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, double *jacobian) const;

src/t8_geometry/t8_geometry_implementations/t8_geometry_linear_axis_aligned.cxx

@@ -62,8 +62,8 @@ t8_geometry_linear_axis_aligned::t8_geom_evaluate (t8_cmesh_t cmesh, t8_gloidx_t
  * \param [in]  cmesh      The cmesh in which the point lies.
  * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
  * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
- * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
- *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+ * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+ *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
  */
 /* *INDENT-OFF* */
 /* indent adds second const */

src/t8_geometry/t8_geometry_implementations/t8_geometry_linear_axis_aligned.hxx

@@ -71,8 +71,8 @@ struct t8_geometry_linear_axis_aligned: public t8_geometry_with_vertices
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    */
   virtual void
   t8_geom_evaluate_jacobian (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, double *jacobian) const;

src/t8_geometry/t8_geometry_implementations/t8_geometry_occ.hxx

@@ -112,8 +112,8 @@ struct t8_geometry_occ: public t8_geometry_with_vertices
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    */
   virtual void
   t8_geom_evaluate_jacobian (t8_cmesh_t cmesh, t8_gloidx_t gtreeid, const double *ref_coords, double *jacobian) const;

src/t8_geometry/t8_geometry_implementations/t8_geometry_zero.hxx

@@ -60,8 +60,8 @@ struct t8_geometry_zero: public t8_geometry
    * \param [in]  cmesh      The cmesh in which the point lies.
    * \param [in]  gtreeid    The global tree (of the cmesh) in which the reference point is.
    * \param [in]  ref_coords  Array of \a dimension many entries, specifying a point in \f$ [0,1]^\mathrm{dim} \f$.
-   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size dimension x 3. Indices 3*i, 3*i+1, 3*i+2
-   *                          correspond to the i-th column of the jacobian (Entry 3*i + j is \f$ \frac{\partial f_j}{\partial x_i} \f$).
+   * \param [out] jacobian    The jacobian at \a ref_coords. Array of size \f$ \mathrm{dim} \cdot 3 \f$. Indices \f$ 3 \cdot i\f$ , \f$ 3 \cdot i+1 \f$ , \f$ 3 \cdot i+2 \f$
+   *                          correspond to the \f$ i \f$-th column of the jacobian (Entry \f$ 3 \cdot i + j \f$ is \f$ \frac{\partial f_j}{\partial x_i} \f$).
    * \note All entries in \a jacobian will be set to zero.
    */
   virtual void