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diff --git a/src/internal/Transpose.h b/src/internal/Transpose.h
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+++ b/src/internal/Transpose.h
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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr>
+//
+// Eigen 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 2 or (at your option) any later version.
+//
+// Eigen 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 Eigen; if not, write to the Free Software Foundation, Inc., 51
+// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. This exception does not invalidate any other reasons why a work
+// based on this file might be covered by the GNU General Public License.
+
+#ifndef EI_TRANSPOSE_H
+#define EI_TRANSPOSE_H
+
+template<typename MatrixType> class EiTranspose
+  : public EiObject<typename MatrixType::Scalar, EiTranspose<MatrixType> >
+{
+  public:
+    typedef typename MatrixType::Scalar Scalar;
+    typedef typename MatrixType::Ref MatRef;
+    friend class EiObject<Scalar, EiTranspose<MatrixType> >;
+    
+    static const int RowsAtCompileTime = MatrixType::ColsAtCompileTime,
+                     ColsAtCompileTime = MatrixType::RowsAtCompileTime;
+
+    EiTranspose(const MatRef& matrix) : m_matrix(matrix) {}
+    
+    EiTranspose(const EiTranspose& other)
+      : m_matrix(other.m_matrix) {}
+    
+    EI_INHERIT_ASSIGNMENT_OPERATORS(EiTranspose)
+    
+  private:
+    EiTranspose& _ref() { return *this; }
+    const EiTranspose& _constRef() const { return *this; }
+    int _rows() const { return m_matrix.cols(); }
+    int _cols() const { return m_matrix.rows(); }
+    
+    Scalar& _write(int row, int col)
+    {
+      return m_matrix.write(col, row);
+    }
+    
+    Scalar _read(int row, int col) const
+    {
+      return m_matrix.read(col, row);
+    }
+    
+  protected:
+    MatRef m_matrix;
+};
+
+template<typename Scalar, typename Derived>
+EiTranspose<Derived>
+EiObject<Scalar, Derived>::transpose()
+{
+  return EiTranspose<Derived>(static_cast<Derived*>(this)->ref());
+}
+
+#endif // EI_TRANSPOSE_H