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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeMay 26th 2014
   • (edited May 26th 2014)
   • PermaLink
   Author: Urs
   Format: MarkdownItexcreated _[[exponential exact sequence]]_ with the obvious basic comments. Cross-linked with _[[Planck's constant]]_, with _[[multiplicative group]]_ and _[[circle group]]_, and with _[[Kummer sequence]]_.

   created exponential exact sequence with the obvious basic comments. Cross-linked with Planck’s constant, with multiplicative group and circle group, and with Kummer sequence.

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeMay 31st 2014
   • PermaLink
   Author: Urs
   Format: MarkdownItexadded a remark on the [induced long exact sequence in cohomology](http://ncatlab.org/nlab/show/exponential+exact+sequence#LongSequenceInCohomology), mentioning the first Chern class and the Dixmier-Douady class.

   added a remark on the induced long exact sequence in cohomology, mentioning the first Chern class and the Dixmier-Douady class.