Locally dualizable modules abound
arxiv(2024)
摘要
It is proved that given any prime ideal 𝔭 of height at least 2
in a countable commutative noetherian ring A, there are uncountably many more
dualizable objects in the 𝔭-local 𝔭-torsion stratum
of the derived category of A than those that are obtained as retracts of
images of perfect A-complexes. An analogous result is established dealing
with the stable module category of the group algebra, over a countable field of
positive characteristic p, of an elementary abelian p-group of rank at
least 3.
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