# gauge transformations on gerbes

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### Christoph Wockel

Aug 3, 2007, 10:02:23 AM8/3/07
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Hi there,

can anyone help me with finding the appropriate notion of a gauge
transformation on a gerbe (abelian or not)? I would be interested in
particular in lifting gerbes. I tried to find it several times but did
not succeed. My guess would be to define it as a vertical 2-bundle
automorphismsm of the corresponding 2-bundle, but I did not find this
mentioned anywhere... Accordingly, gauge transformations would build
up a 2-group rather than a group.

Thanks for any suggestions,

Christoph

### Maarten Bergvelt

Aug 3, 2007, 2:34:40 PM8/3/07
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