Project-declaredLean 4.33.0-rc1
Eq pow prime of unit of congruent
eq_pow_prime_of_unit_of_congruent
Plain-language statement
A regular prime criterion: if a unit of the cyclotomic field is congruent to an integer modulo p, then it is a p-th power.
number theorycyclotomic fieldsFermat's Last Theorem
Source project: FLT for regular primes
Person-level attribution pending.