Source-pinned research

Research proof index

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Project-declaredLean 4.33.0-rc1

Dvd card class Group of unramified is Cyclic

dvd_card_classGroup_of_unramified_isCyclic

Plain-language statement

This is the second part of Hilbert Theorem 94, which states that if L/K is an unramified cyclic finite extension of number fields of odd prime degree, then the degree divides the class number of K.

number theorycyclotomic fieldsFermat's Last Theorem

Source project: FLT for regular primes

Person-level attribution pending.

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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.

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Project-declaredLean 4.33.0-rc1

Case I easier

FltRegular.caseI_easier

Plain-language statement

Case I with additional assumptions.

number theorycyclotomic fieldsFermat's Last Theorem

Source project: FLT for regular primes

Person-level attribution pending.

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Project-declaredLean 4.33.0-rc1

Case II

FltRegular.caseII

Plain-language statement

Case II of Fermat's Last Theorem for regular primes.

number theorycyclotomic fieldsFermat's Last Theorem

Source project: FLT for regular primes

Person-level attribution pending.

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