Source-pinned research

Research proof index

Search theorem names, mathematical ideas, modules, topics, projects, and role-labelled researchers. Open a result for its complete indexed Lean declaration and source record.

This index contains 1 research declarations. Search 10,000 more complete Mathlib declarations.

1 topic
Project-declaredLean 4.32.0

Exists of is Invariant of profinite

IsArithFrobAt.exists_of_isInvariant_of_profinite

Plain-language statement

Let G be a finite group acting on S, and R be the fixed subring. If Q is a prime of S with finite residue field, then there exists a Frobenius element σ : G at Q.

number theoryarithmetic geometryFermat's Last Theorem

Source project: Fermat's Last Theorem

Person-level attribution pending.

View proof record