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   Generated automatically by cpp2rst

.. highlight:: c
.. role:: red
.. role:: green
.. role:: param


.. _triqs__hilbert_space__sub_hilbert_space__constructor:

triqs::hilbert_space::sub_hilbert_space::constructor
====================================================

*#include <triqs/hilbert_space/sub_hilbert_space.hpp>*



**Synopsis**

 .. rst-class:: cppsynopsis

       | :red:`sub_hilbert_space` (int :param:`index` = -1)





Construct an empty Hilbert subspace





Parameters
^^^^^^^^^^

 * :param:`index` Index of this subspace within the full Hilbert space