111.5.11 Theorem on formal functions and Grothendieck's Existence Theorem
These papers give generalizations of the theorem on formal functions [III.4.1.5, EGA] (sometimes referred to Grothendieck's Fundamental Theorem for proper morphisms) and Grothendieck's Existence Theorem [III.5.1.4, EGA].
Knutson: Algebraic spaces [Chapter V, Kn]
Generalizes these theorems to algebraic spaces.
Abramovich-Vistoli: Compactifying the space of stable maps [A.1.1, abramovich-vistoli]
Generalizes these theorems to tame Deligne-Mumford stacks
Olsson and Starr: Quot functors for Deligne-Mumford stacks [olsson-starr]
Generalizes these theorems to separated Deligne-Mumford stacks.
Olsson: On proper coverings of Artin stacks [olsson_proper]
Provides a generalization to proper Artin stacks.
Conrad: Formal GAGA on Artin stacks [conrad_gaga]
Provides a generalization to proper Artin stacks and proves a formal GAGA theorem.
Olsson: Sheaves on Artin stacks [olsson_sheaves]
Provides another proof for the generalization to proper Artin stacks.
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