diff --git a/sources/reactphysics3d/Matrix.h b/sources/reactphysics3d/Matrix.h
deleted file mode 100644
index 6440462b..00000000
--- a/sources/reactphysics3d/Matrix.h
+++ /dev/null
@@ -1,111 +0,0 @@
-/****************************************************************************
- * Copyright (C) 2009      Daniel Chappuis                                  *
- ****************************************************************************
- * This file is part of ReactPhysics3D.                                     *
- *                                                                          *
- * ReactPhysics3D is free software: you can redistribute it and/or modify   *
- * it under the terms of the GNU General Public License as published by     *
- * the Free Software Foundation, either version 3 of the License, or        *
- * (at your option) any later version.                                      *
- *                                                                          *
- * ReactPhysics3D is distributed in the hope that it will be useful,        *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
- * GNU General Public License for more details.                             *
- *                                                                          *
- * You should have received a copy of the GNU General Public License        *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
-
-#ifndef MATRIX_H
-#define MATRIX_H
-
-// Libraries
-#include "exceptions.h"
-#include <stdexcept>
-#include <iostream>
-
-// ReactPhysics3D namespace
-namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class Matrix :
-        This class represents a matrix.
-    -------------------------------------------------------------------
-*/
-class Matrix {
-    private :
-        int nbRow;                                                                      // Number of row in the matrix
-        int nbColumn;                                                                   // Number of colum in the matrix
-        double** array;                                                                 // Dynamic array that contains the values of the matrix
-
-    public :
-        Matrix(int nbRow, int nbColum) throw(std::invalid_argument);                    // Constructor of the class Matrix
-        Matrix(const Matrix& matrix);                                                   // Copy constructor of the class Matrix
-        virtual ~Matrix();                                                              // Destructor of the class Matrix
-        double getValue(int i, int j) const throw(std::invalid_argument);               // Return a value in the matrix
-        void setValue(int i, int j, double value) throw(std::invalid_argument);         // Set a value in the matrix
-        int getNbRow() const;                                                           // Return the number of row of the matrix
-        int getNbColumn() const;                                                        // Return the number of column of the matrix
-        Matrix getCofactor(int i, int j) const throw(std::invalid_argument);            // Return the cofactor matrix by removing row i and column j
-        Matrix getTranspose() const;                                                    // Return the transposed matrixs
-        Matrix getInverse() const throw(MathematicsException);                          // Return the inverse of the matrix if there exists
-        double getDeterminant() const throw(MathematicsException);                      // Return the determinant of the matrix
-        double getTrace() const throw(MathematicsException);                            // Return the trace of a square matrix
-        static Matrix identity(int dimension) throw(std::invalid_argument);             // Return the identity matrix I of the given dimension
-
-        void display() const;                                                           // TO DELETE
-
-        // --- Overloaded operators --- //
-        Matrix operator+(const Matrix& matrix2) const throw(MathematicsException);      // Overloaded operator for addition
-        Matrix operator-(const Matrix& matrix2) const throw(MathematicsException);      // Overloaded operator for substraction
-        Matrix operator*(double nb) const;                                              // Overloaded operator for multiplication with a number
-        Matrix operator*(const Matrix& matrix2) const throw(MathematicsException);      // Overloaded operator for multiplication with a matrix
-        Matrix& operator=(const Matrix& matrix2) throw(MathematicsException);           // Overloaded operator for assignment
-        bool operator==(const Matrix& matrix2) const throw(MathematicsException);       // Overloaded operator for equality condition
-};
-
-// Function to get a value in the matrix (inline)
-inline double Matrix::getValue(int i, int j) const throw(std::invalid_argument) {
-    if (0 <= i && i < nbRow && 0 <= j && j < nbColumn) {
-        // get the value in the matrix
-        return array[i][j];
-    }
-    else {
-        // We Throw an out_of_range exception
-        throw std::invalid_argument("Exception : The index i or j is outside the matrix size !");
-    }
-}
-
-// Function to set a value in the matrix (inline)
-inline void Matrix::setValue(int i, int j, double value) throw(std::invalid_argument) {
-    if (0 <= i && i < nbRow && 0 <= j && j < nbColumn) {
-        // Set the value in the matrix
-        this->array[i][j] = value;
-    }
-    else {
-        // We Throw an out_of_range exception
-        throw std::invalid_argument("Exception : The index i or j is outside the matrix size !");
-    }
-}
-
-// Function that return the number of row of the matrix (inline)
-inline int Matrix::getNbRow() const {
-    return nbRow;
-}
-
-// Function that return the number of colum of the matrix (inline)
-inline int Matrix::getNbColumn() const {
-    return nbColumn;
-}
-
-// Overloaded operator for multiplication between a number and a Matrix (inline)
-inline Matrix operator*(double number, const Matrix& matrix) {
-
-    // Return the result matrix
-    return matrix * number;
-}
-
-} // End of the ReactPhysics3D namespace
-
-#endif