Wolfgang Bangerth

I think I can make it so that the lambda functions by default just call `first_cell()` and `next_cell()`. That would allow backward compatibility. Would that make sense? Over time we...

@OpenFCST Any news?

Take a look here: https://github.com/dealii/dealii/wiki/Indentation#commit-authorship

Can I suggest that we call this `project_to_reference_cell()`? The notation that is widely used in the FE community is "reference cell", and I have for decades regretted that we used...

My understand is that p4est ensures that sibling cells are owned by the same process if they are *active*. Clearly, that cannot be if the cells are not active --...

The assertion isn't going to work if you're on an active locally owned cell on level 0. Even then, I don't think this is right. I believe that p4est only...

What's the status here?

OK, let me know once you have the test!

Yes, with have a number of tests that have outputs like `tests/trilinos/precondition_muelu_smoother.with_trilinos_with_muelu=on.with_64bit_indices=off.output` that express requirements. Whether it's worth testing that we get errors on unsupported configurations is perhaps debatable, but...

With #16613, we are now at 55/284 tests succeeding.