<commit_before>#ifndef CardiacKirchhoffStressDivergence_H
#define CardiacKirchhoffStressDivergence_H

#include "Kernel.h"
#include "SymmGenericElasticityTensor.h"

//Forward Declarations
class ColumnMajorMatrix;
class CardiacKirchhoffStressDivergence;
class SymmElasticityTensor;
class SymmTensor;

template<>
InputParameters validParams<CardiacKirchhoffStressDivergence>();

/**
 * Stress divergence kernel - tightly coupled to CardiacNash2000Material.
 *
 * This kernel implements \f$(\grad\psi_i,\mathbf{T}\grad u_c)\f$ with 
 * the 2nd Piola-Kirchhoff stress tensor \f$\mathbf{T}\f$ that is
 * fetched from a CardiacNash2000Material instance via its
 * `Kirchhoff_stress` MaterialProperty. Furthermore, the
 * `Kirchhoff_stress_derivative` MaterialProperty is utilized in the<commit_msg>another latex fix in docs<commit_after>#ifndef CardiacKirchhoffStressDivergence_H
#define CardiacKirchhoffStressDivergence_H

#include "Kernel.h"
#include "SymmGenericElasticityTensor.h"

//Forward Declarations
class ColumnMajorMatrix;
class CardiacKirchhoffStressDivergence;
class SymmElasticityTensor;
class SymmTensor;

template<>
InputParameters validParams<CardiacKirchhoffStressDivergence>();

/**
 * Stress divergence kernel - tightly coupled to CardiacNash2000Material.
 *
 * This kernel implements \f$(\mathrm{grad}\psi_i,\mathbf{T}\mathrm{grad} u_c)\f$ with 
 * the 2nd Piola-Kirchhoff stress tensor \f$\mathbf{T}\f$ that is
 * fetched from a CardiacNash2000Material instance via its
 * `Kirchhoff_stress` MaterialProperty. Furthermore, the
 * `Kirchhoff_stress_derivative` MaterialProperty is utilized in the
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