I have a question regarding our output strategy: When we output our solution fields, we always create separate vertices for each element because this allows us to output discontinuous fields over element edges, for example. We also have an FAQ entry about this:

What I would like to know is if anyone knows if that scheme was ever written down somewhere. I'm looking for a reference I can cite. I looked through a few documents, including the 2007 deal.II paper, but I couldn't find anything. I have also seen some other FE packages doing the same, but so I'd also take those references, if we don't have our own. (Or I simply link to our FAQ, even though I prefer to give people credit through a Scopus reference if available.)
I suspect that I had something to do with the implementation of this feature, but I don't think it's ever been written down. At least I don't know of anything, and I don't think any of the authors ever wrote it down beyond the documentation in the relevant classes and the FAQ.


Wolfgang Bangerth          email:       

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