UT3Tangent.has_minimal_ranks
============================

.. py:method:: t3toolbox.uniform_manifold.UT3Tangent.has_minimal_ranks()

   .. code-block:: python

      def has_minimal_ranks(self) -> NDArray:  # bool array, shape = frame stack C (scalar unstacked)


   True (per frame-stack element) if this tangent's frame has **structurally** minimal ranks. See
   :py:meth:`UT3Frame.has_minimal_ranks`. Minimal rank is *not* a correctness precondition for the
   tangent ops (see the contract catalog); for the numerical check see
   :py:meth:`has_numerically_minimal_ranks`. Not enforced at construction.