In algebraic geometry, the moduli stack of formal group laws is a stack classifying formal group laws and isomorphisms between them.
It is a "geometric object" that underlies the chromatic approach to the stable homotopy theory, a branch of algebraic topology.
Hence, it is typical to work with stratifications.
consists of formal group laws over R of height exactly n. They form a stratification of the moduli stack
{\displaystyle \operatorname {Spec} {\overline {\mathbb {F} _{p}}}\to {\mathcal {M}}_{\text{FG}}^{n}}
is faithfully flat.
{\displaystyle \operatorname {Spec} {\overline {\mathbb {F} _{p}}}/\operatorname {Aut} ({\overline {\mathbb {F} _{p}}},f)}
is a profinite group called the Morava stabilizer group.
The Lubin–Tate theory describes how the strata
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