Blame for NOTICE.md

# Source-specific reuse notices

Frontier Science combines attributed source material, original editorial summaries,
catalogue pointers and formal source code. This package does not grant a new uniform
license over third-party works. `source.license` preserves the collected source's
reuse wording; `formalizations[].license` applies to the attached code and can differ
from the surrounding text. Missing or ambiguous terms mean no license was established
by this export. Consult the linked source and any version-specific notices.

- **AIM Problem Lists:** recorded as CC BY-SA 3.0. Preserve author/collection links
  and applicable attribution/share-alike obligations.
- **Wikipedia selections:** recorded as CC BY-SA 4.0; references retain article and
  history links. Summaries/adaptations must retain applicable attribution and terms.
- **FormalConjectures code:** Apache License 2.0. The upstream license is included
  in `licenses/formal-conjectures-LICENSE`; original code comments/notices are retained.
  Source files are copied as collected, not proved or rewritten during export.
  The repository's non-code materials have separately recorded CC BY 4.0 terms;
  third-party mathematical sources keep their own terms. See the pinned repository
  links and dependency metadata.
- **TheoremDB:** some selected research packets were recorded as CC0, but that is
  not a blanket license for all imported statements, source quotations, formalizations
  or referenced literature. The source registry's wording is retained, without
  upgrading all TheoremDB rows to CC0.
- **Journal articles, preprints, problem lists and books:** permissions vary by
  article/version. Some records carry CC BY, CC BY-SA or CC0 terms; others contain
  attributed summaries and links with no established redistribution license for the
  original full text. An arXiv hosting license is not a general reuse license.
- **MSC 2020:** Mathematical Reviews (American Mathematical Society) and zbMATH;
  recorded as [CC BY-NC-SA 4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/).
  The included taxonomy and its attribution/provenance appear in
  `metadata/msc2020-manifest.json`. Its noncommercial/share-alike terms are distinct
  from other sources' terms. Editorial subject mappings do not imply AMS endorsement.

The default configuration retains the complete existing published corpus. It is
technically loadable/uploadable, but is not advertised as universally permissive
training data. No external PDF, figure, or complete journal issue is bundled merely
because it is reachable from a source URL. Original authors and rights holders retain
their rights. Source-specific filtering remains possible through the structured
source keys, license notes and artifact provenance.