How statement and proof provenance work
The first chip identifies the source of the statement or construction; the second identifies the source of its local proof or verification.
- Literature-sourced: the exact statement appears in a cited source; only wording and notation differ.
- AI-adapted: a semantically identical restatement of literature-sourced material, modulo indexing, notation, and boundary cases adopted by the library.
- AI-generated: a genuinely novel statement formulated by AI, with no source for the claim itself.
These labels describe origin, not correctness: citations and verification chips remain separate evidence.
The two filtrations identify E2 and the composite edge
Statement
For the supplied composite data , under the acyclicity and comparison hypotheses of the total-composite lemma, the vertical-first filtration of collapses to . The other filtration has Its two edges are the canonical maps and .
Facts & Assumptions
Given: The supplied data and exact hypotheses in the statement.
The first filtration identifies the target through the augmentation (The total Cartan-Eilenberg complex computes the derived composite).
The second hypercohomology sequence has and finite resolution-degree filtration (Second hypercohomology spectral sequence).
Its edges are inclusion of the bottom horizontal cycles and projection onto resolution degree zero (Hypercohomology edge maps are canonical).
Proof
The cohomology of is , with . Substitute this into F2 to obtain the displayed . F1 identifies the total target with through the actual augmentation quasi-isomorphism. Its proof computes the other filtration as one row, so these are two filtrations of the same total complex, not a claimed equality of their second pages.
Set the lower bound to zero in F3. The bottom horizontal-cycle inclusion gives ; projection gives . Transport both along the augmentation isomorphism of step 1.1. This defines the canonical derived-composite edges and agrees with the finite filtration definition. In degree zero both reduce to ; vanishing edge terms are permitted. The naturality/choice qualifications are exactly those of F1–F3.