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 8 research declarations. Search 10,000 more complete Mathlib declarations.

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Project-declaredLean 4.31.0

Sum eq half Sum

ArkLib.Lattices.CyclotomicModulus.sum_eq_halfSum

Plain-language statement

Splitting the degree-2^α sum into low/high halves and factoring ζ^{2^{α-1}} = s collects the coefficient of ζ^j as a_j + s·a_{2^{α-1}+j}.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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Project-declaredLean 4.31.0

Unit pow eq one iff

ArkLib.Lattices.CyclotomicModulus.unit_pow_eq_one_iff

Plain-language statement

Bridge: u^m = 1 in the unit group iff 2^(α+1) ∣ q^m - 1.

cryptographyproof systemscoding theory

Source project: ArkLib

Person-level attribution pending.

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