*  The default Keras model saving format is now the Keras v3 format: calling `model.save("xyz.keras")` will no longer create a H5 file, it will create a native Keras model file. This will only be breaking for you if you were manually inspecting or modifying H5 files saved by Keras under a `.keras` extension. If this breaks you, simply add `save_format="h5"` to your `.save()` call to...

     For example, in the equation `iii->i` with input shape `[3, 3, 3]`, the
     generalized diagonal would consist of `3` elements at indices `(0, 0, 0)`,
     `(1, 1, 1)` and `(2, 2, 2)` to create a Tensor of shape `[3]`.

 (b) Reduction: Axes corresponding to labels appearing only in one input
     subscript but not in the output subscript are summed over prior to Tensor
     contraction.