ut3_tucker_factors_shared
=========================

.. py:function:: t3toolbox.backend.sharing.ut3_tucker_factors_shared(data, sharing, rtol = 1e-09)

   .. code-block:: python

      def ut3_tucker_factors_shared(
              data:       typ.Tuple[
                  NDArray,             # tucker_supercore, shape=(d,)+stack+(n,N)
                  NDArray,             # tt_supercore,     shape=(d,)+stack+(r,n,r)
                  typ.Sequence[int],   # shape, static int tuple
                  typ.Tuple[NDArray, NDArray],  # (tucker_edge_mask, tt_edge_mask), HOST bool, static
              ],
              sharing:    typ.Sequence,   # len=d, static; one hashable group label per mode
              rtol:       float = 1e-9,   # relative tolerance on the factor deviation
      ) -> NDArray:  # bool array, shape = stack_shape (scalar/0-d when unstacked)


   True (per stack element) where the MASKED Tucker factors are tied within every sharing group --
   the uniform twin of :py:func:`t3_tucker_factors_shared` (the boolean form of
   :py:func:`ut3_sharing_residual`; a non-enforcing checker).