Official upstream source

Nat.ModEq.pow_card_sub_one_eq_one

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Package: mathlib
Repository: https://github.com/leanprover-community/mathlib4
Commit: 5e932f97dd25535344f80f9dd8da3aab83df0fe6
Source path: Mathlib/FieldTheory/Finite/Basic.lean:663
SHA-256: sha256:808bb4eddb8a4b48785e4430f944fe0827c96842dffa0c08cd21b5659bd85d44
Verified bytes: 36,477

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