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History of tag 09PU

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changed the statement and the proof 2021-10-01 acfa2cc
Fix error in statement Lemma 09PU

It is rather like a typo or just an oversight. Or maybe I should say that
I was too careless when I formulated this lemmma in 2013.
changed the statement 2017-07-22 68dc905
Typos in dpa.tex.
changed the statement 2016-08-31 76f55db
Corrected typos in cohomology.tex descent.tex dpa.tex
assigned tag 09PU 2013-10-08 1e3157f
Tags: Added new tags
moved the statement to file dpa.tex 2013-10-08 154a0e6
New chapter on divided power algebra

Contains the rudiments of divided powers as well as the material on Tate
resolutions and its application to Avramov's theorem we just added.
created statement with label lemma-not-finite-pd in dga.tex 2013-10-07 9b1240a
Relations produce obstructions to perfectness

This argument is apparantly due to Gulliksen.