Update docs: bond_harmonic_shift

doc/src/Eqs/bond_harmonic_shift.tex

@@ -1,9 +0,0 @@
-\documentclass[12pt]{article}
-
-\begin{document}
-
-$$
-   E = \frac{Umin}{(r_0-r_c)^2} \left[ (r-r_0)^2-(r_c-r_0)^2 \right] 
-$$
-
-\end{document}

doc/src/bond_harmonic_shift.rst

@@ -1,16 +1,16 @@
-.. index:: bond\_style harmonic/shift
+.. index:: bond_style harmonic/shift
 
-bond\_style harmonic/shift command
-==================================
+bond_style harmonic/shift command
+=================================
 
-bond\_style harmonic/shift/omp command
-======================================
+bond_style harmonic/shift/omp command
+=====================================
 
 Syntax
 """"""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    bond_style harmonic/shift
 
@@ -18,7 +18,7 @@ Examples
 """"""""
 
 
-.. parsed-literal::
+.. code-block:: LAMMPS
 
    bond_style harmonic/shift
    bond_coeff 5 10.0 0.5 1.0
@@ -29,23 +29,25 @@ Description
 The *harmonic/shift* bond style is a shifted harmonic bond that uses
 the potential
 
-.. image:: Eqs/bond_harmonic_shift.jpg
-   :align: center
+.. math::
 
-where r0 is the equilibrium bond distance, and rc the critical distance.
-The potential is -Umin at r0 and zero at rc. The spring constant is
-k = Umin / [ 2 (r0-rc)\^2].
+   E = \frac{U_{\text{min}}}{(r_0-r_c)^2} \left[ (r-r_0)^2-(r_c-r_0)^2 \right]
+
+
+where :math:`r_0` is the equilibrium bond distance, and :math:`r_c` the critical distance.
+The potential is :math:`-U_{\text{min}}` at :math:`r0` and zero at :math:`r_c`. The spring constant is
+:math:`k = U_{\text{min}} / [ 2 (r_0-r_c)^2]`.
 
 The following coefficients must be defined for each bond type via the
 :doc:`bond\_coeff <bond_coeff>` command as in the example above, or in
 the data file or restart files read by the :doc:`read\_data <read_data>`
 or :doc:`read\_restart <read_restart>` commands:
 
-* Umin (energy)
+* :math:`U_{\text{min}}` (energy)
 
-* r0 (distance)
+* :math:`r_0` (distance)
 
-* rc (distance)
+* :math:`r_c` (distance)
 
 
 ----------
@@ -88,8 +90,3 @@ Related commands
 :doc:`bond\_harmonic <bond_harmonic>`
 
 **Default:** none
-
-
-.. _lws: http://lammps.sandia.gov
-.. _ld: Manual.html
-.. _lc: Commands_all.html