Algebra/Topology Seminar by Sergio Estrada

Algebra/Topology Seminar by Sergio Estrada (University of Murcia).

Title: Very flat modules and sheaves.

Abstract: Very flat and contraadjusted modules naturally arise in 

Algebraic Geometry.  They were defined by Positselski 
[arXiv:1209.2995]. We will summarize the main properties of these 
modules and of the corresponding class of sheaves. 
We will define a mock homotopy category of 
projectives on a quasi-compact and semi-separated scheme by using very 
flat quasi-coherent sheaves and show the existence 
of a recollement among the different homotopy categories involved. 

Sergio Estrada