…

]]>there is no

Now there is.

]]>But then the definition in the nLab entry must be changed (or another definition must be added), because in the entry as it is there is no defined bracket $[.,.]$ for elements of degree zero and one. ]]>

"...

the differential respects the brackets: for all

x∈g 0 and

h∈g 1 we have

δ[x,h]=[x,δh]

..."

is wrong. The equation should be:

δα(x,h)=[x,δh]

yes and no

1. it is common to denote $\alpha$ as [ , ]

2. in the context of respecting the brackets, it might be better to write

δ[x,h]= [δx,h]\pm [x,δh]

and then remark for h in ... ]]>

Change away. Everyone has the right. For a typo, no need to comment here. For a substantial change, leave a note at the forum.

]]>In

http://ncatlab.org/nlab/show/Lie+2-algebra, at

“… the differential respects the brackets: for all $x \in g_0$ and $h \in g_1$ we have

$\delta [x,h]=[x,\delta h]$…”

is wrong. The equation should be:

$\delta \alpha(x,h) = [x,\delta h]$Since I don’t know if I have the right to change an nLab entry,I post this here as an suggestion.

]]>