Algebra notes
Darij Grinberg, A few
facts on integrality (version 30 November 2010).
PDF file.
Detailed version with all the
proofs much more formalized.
Old version (version 20 August
2009) with slightly weaker Theorem 1.
Sourcecode of all the files.
See main page for an abstract.
Algebra notes
Darij Grinberg