crossref-exports
Redirects from external-database identifiers to the corresponding
Mathlib documentation. The underlying data lives in
crossrefs.json.
Usage
?db=<db>&id=<id>#doc redirects to the
declaration's documentation page, and #src to its source
location (#doc is the default).
db is one of wikidata, stacks, or
kerodon; id is the identifier in that database.
For example,
?db=wikidata&id=Q83478#doc.