# Talk:Sobolev space

From Encyclopedia of Mathematics

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)

## Notations

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. Nikita2 (talk) 13:13, 23 November 2012 (CET)

- (Please sign your comments.) Yes, that makes sense, in particular since this is the notation used on related pages like Generalized derivative.--Ulf Rehmann 10:36, 23 November 2012 (CET)

**How to Cite This Entry:**

Sobolev space.

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Sobolev_space&oldid=28814