t3_left_orthogonalize
=====================

.. py:function:: t3toolbox.backend.t3_orthogonalization.t3_left_orthogonalize(x)

   .. code-block:: python

      def t3_left_orthogonalize(
              x: typ.Tuple[typ.Sequence[NDArray], typ.Sequence[NDArray]], # (tucker_cores, tt_cores)
      ) -> typ.Tuple[
          typ.Tuple[NDArray, ...],  # up_tucker_cores
          typ.Tuple[NDArray, ...],  # left_tt_cores
      ]:


   Left orthogonalize T3.