View source for 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?--[[User:Jjtorrens|Juan José Torrens]] 01:59, 5 May 2012 (CEST)
: Yes, bibs can be glued together. You may want to use [[Help:Normalize_EoM_references#Perl_script_to_normalize_old_EoM_reference_table | this script]] to handle references, which does also get the entries into right order. 
: But see the warning there. --[[User:Ulf Rehmann|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. [[User:Nikita2|Nikita2]] ([[User talk: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]].--[[User:Ulf Rehmann|Ulf Rehmann]] 10:36, 23 November 2012 (CET)