Source history
Detailed backend records are private. Public author/source status appears above.
The permanent identity and original source provenance are retained below.
{
"key": "work:W000050:pdf:515109098ae5cd73bf266fa97bf498b4e8c7adb6e936be67e6fa9a86bb69020d:page:1713:bbox:90.0,208.128,522.368,220.032",
"first_source_version": "2018-02-03",
"chapter": "work-w000050",
"work": "W000050",
"kind": "Example",
"number": "25.3.1.7",
"title": "Example 25.3.1.7. Let A be a polynomial ring Zrxss generated by a possibly infinite set",
"source_version": "2018-02-03",
"source": {
"pdf_sha256": "515109098ae5cd73bf266fa97bf498b4e8c7adb6e936be67e6fa9a86bb69020d",
"page": 1713,
"bbox": [
90.0,
208.128,
522.368,
220.032
]
},
"target": "/chapters/work-w000050.html",
"identity_basis": "pinned original PDF hash and exact page/bbox; never display number",
"status": "active"
}