Source: Homology Homotopy Appl.
Volume 10, Number 1
The paper considers the FPQC stacks which are associated to affine groupoid
schemes. Using a formulation of a descent datum in terms of morphisms of affine
groupoid schemes, explicit arguments are given which avoid appeal to the general
principle of faithfully flat descent. This theory is applied to consider the
notion of affine morphism.
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