Talk:Sobolev space

In the original page, there are two bibliographies and an empty comment section. Should there be just one bibliography? Remove comments section?--Juan José Torrens 01:59, 5 May 2012 (CEST)

Yes, bibs can be glued together. You may want to use this script to handle references, which does also get the entries into right order.

But see the warning there. --Ulf Rehmann 11:17, 5 May 2012 (CEST)

notation

Should we use $D^{\alpha}_xf$ or $D^{\alpha}f$ instead of $f^{(k)}$ for derivatives? Because $f^{(k)}$ looks like $k$-th derivative of single variable function.