2020/02/19 by Chang-Yeon Chough, Chough, Chang-Yeon
Mathematics · #14A20 #14F05 (Primary) 18G30 #14F22 #18G55 (Secondary) #Algebraic Geometry (math.AG) #Algebraic Topology (math.AT) #FOS: Mathematics #math.AG #math.AT #msc:14A20 #msc:14F05 #msc:14F22 #msc:18G30 #msc:18G55
paper · pdf · doi:10.48550/arxiv.2002.07946
31 pages, comments welcome
arxiv created 2020/02/19 · arxiv updated 2020/02/20
We study the question of whether the Brauer group is isomorphic to the cohomological one in spectral algebraic geometry. For this, we prove the compact generation of the derived category of twisted sheaves for quasi-compact spectral algebraic stacks with quasi-affine diagonal, which admit a quasi-finite presentation; in particular, we obtain the compact generation of the unbounded derived category of quasi-coherent sheaves and the existence of compact perfect complexes with prescribed support for such stacks. We also study the relationship between derived and spectral algebraic stacks, so that our results can be extended to the setting of derived algebraic geometry.