new file mode 100644
--- /dev/null
+++ b/src/OPERATORS/op-pm-pm.cc
@@ -0,0 +1,85 @@
+/*
+
+Copyright (C) 2008 Jaroslav Hajek <highegg@gmail.com>
+
+This file is part of Octave.
+
+Octave 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.
+
+Octave 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 Octave; see the file COPYING.  If not, see
+<http://www.gnu.org/licenses/>.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "gripes.h"
+#include "oct-obj.h"
+#include "ov.h"
+#include "ov-perm.h"
+#include "ov-flt-perm.h"
+#include "ov-re-mat.h"
+#include "ov-typeinfo.h"
+#include "ops.h"
+
+DEFUNOP (transpose, perm_matrix)
+{
+  CAST_UNOP_ARG (const octave_perm_matrix&);
+  return octave_value (v.perm_matrix_value().transpose ());
+}
+
+DEFBINOP_OP (mul, perm_matrix, perm_matrix, *)
+
+DEFBINOP (div, perm_matrix, perm_matrix)
+{
+  CAST_BINOP_ARGS (const octave_perm_matrix&, const octave_perm_matrix&);
+  
+  return (v1.perm_matrix_value () * v2.perm_matrix_value ().inverse ());
+}
+
+DEFBINOP (ldiv, perm_matrix, perm_matrix)
+{
+  CAST_BINOP_ARGS (const octave_perm_matrix&, const octave_perm_matrix&);
+  
+  return (v1.perm_matrix_value ().inverse () * v2.perm_matrix_value ());
+}
+
+CONVDECL (perm_matrix_to_matrix)
+{
+  CAST_CONV_ARG (const octave_perm_matrix&);
+
+  return new octave_matrix (v.matrix_value ());
+}
+
+CONVDECL (perm_matrix_to_float_perm_matrix)
+{
+  CAST_CONV_ARG (const octave_perm_matrix&);
+
+  return new octave_float_perm_matrix (v.perm_matrix_value ());
+}
+
+void
+install_pm_pm_ops (void)
+{
+  INSTALL_UNOP (op_transpose, octave_perm_matrix, transpose);
+  INSTALL_UNOP (op_hermitian, octave_perm_matrix, transpose);
+
+  INSTALL_BINOP (op_mul, octave_perm_matrix, octave_perm_matrix, mul);
+  INSTALL_BINOP (op_div, octave_perm_matrix, octave_perm_matrix, div);
+  INSTALL_BINOP (op_ldiv, octave_perm_matrix, octave_perm_matrix, ldiv);
+
+  INSTALL_CONVOP (octave_perm_matrix, octave_matrix, perm_matrix_to_matrix);
+  INSTALL_CONVOP (octave_perm_matrix, octave_float_perm_matrix, perm_matrix_to_float_perm_matrix);
+  INSTALL_ASSIGNCONV (octave_perm_matrix, octave_matrix, octave_matrix);
+}