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Questions relating to various versions of Koszul duality, including Koszul duality between algebras and Koszul duality for operads.
6
votes
What is the (Koszul? derived?) interpretation of a pair of Lie algebras with the same cohomo...
You (and "everyone") may already know this, but there is a really simple answer to a variant of your question, that is when instead of starting with a Lie algebra you start with a connected differenti …