Ryan LaRose

It must be still in transit :) Thanks for catching this, we will update the problem set asap.

Yes that's right @jaeyoo I will fix this typo in chp 2 -- thanks! We'll also get the missing figure uploaded to the chp 1 problem set soon.

Thanks @roosado - which Cirq version are you running which has the flipped measurement outcome?

[`cirq.Moment`](https://quantumai.google/reference/python/cirq/ops/Moment) appears in the [API reference](https://quantumai.google/reference/python/cirq/all_symbols) for me:  as well as by searching "Moment" on [quantumai.google](https://quantumai.google/): 

Indeed there's a discrepancy between suggested searches and search results. I don't think `ops` is hidden however as it shows up with a [search for ops](https://quantumai.google/s/results?q=ops), albeit below several entries...

Hi @purva-thakre, I meant software representation of a graph (e.g., `nx.Graph` or other).

Thanks @amirebrahimi. This is not a bug because, from the docstring of `execute_with_cdr`: https://github.com/unitaryfund/mitiq/blob/5559568047cd86cb3d163050d1aca99539ab392e/mitiq/cdr/cdr.py#L53-L55 (The circuit in this example contains a `CZPowGate`.) However, this is an important matter of usability....

I also noticed the docstring for `execute_with_cdr` does not appear at https://mitiq.readthedocs.io/en/stable/apidoc.html#module-mitiq.cdr.clifford_training_data. This should also be fixed.

Colab with some prototype subspace expansion code: https://colab.research.google.com/drive/1hN8jtBK9PBVCVvT8WkcNmgHSQbBkSq00?usp=sharing

Alternative option is to skip operations without known representations. (This might be an interesting theoretical pursuit.)