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1. • CommentRowNumber1.
   • CommentAuthormhohmann
   • CommentTimeMay 12th 2015
   • PermaLink
   Author: mhohmann
   Format: MarkdownItexAdded page for [[evolutionary vector field]] and explained how the two different definitions are related. This follows a discussion [here](http://nforum.mathforge.org/discussion/2699/variational-bicomplex/?Focus=53257#Comment_53257) on [this paragraph](http://ncatlab.org/nlab/show/variational+bicomplex#idea).

   Added page for evolutionary vector field and explained how the two different definitions are related. This follows a discussion here on this paragraph.

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeMay 12th 2015
   • (edited May 12th 2015)
   • PermaLink
   Author: Urs
   Format: MarkdownItexThanks for adding this! Some boring editorial comments: Instiki has the property that any consecutive letters in math mode are set in math-roman. This is great for long names such as $UnitOfTheAboveMonad$, but gets in the way with the usual habit for some common pre-fixes. In any case, to make tangent bundles etc come out typeset as expected, namely as $T X$ instead of $TX$ there needs to be a whitespace after the $T$: $T X$ Apart from fixing that, I have, as usual * added a few more hyperlinks. (Notice that we have not only _[[fiber]]_ and _[[bundle]]_ but even _[[fiber bundle]]_ :-) * added more cross-links (i.e. to and from this entry to related entries, such as _[[vector field]]_, _[[jet bundle]]_, _[[variational bicomplex]]_)

   Thanks for adding this!

   Some boring editorial comments:

   Instiki has the property that any consecutive letters in math mode are set in math-roman. This is great for long names such as $UnitOfTheAboveMonad$, but gets in the way with the usual habit for some common pre-fixes. In any case, to make tangent bundles etc come out typeset as expected, namely as $T X$ instead of $TX$ there needs to be a whitespace after the $T$:

     $T X$
   

   Apart from fixing that, I have, as usual

   • added a few more hyperlinks. (Notice that we have not only fiber and bundle but even fiber bundle :-)

   • added more cross-links (i.e. to and from this entry to related entries, such as vector field, jet bundle, variational bicomplex)