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:W000049:pdf:112b145a95a62daefb8275851cac9ab6430004cfc8f751a33a8d981fd7ad68c3:page:1460:bbox:90.0,140.185,558.011,153.097",
"first_source_version": "2017-09-18",
"chapter": "work-w000049",
"work": "W000049",
"kind": "Proof",
"number": "",
"title": "Proof. Choose a left fibration Y →SingA(X) and an element a ∈A; we wish to prove that",
"source_version": "2017-09-18",
"source": {
"pdf_sha256": "112b145a95a62daefb8275851cac9ab6430004cfc8f751a33a8d981fd7ad68c3",
"page": 1460,
"bbox": [
90.0,
140.185,
558.011,
153.097
]
},
"target": "/chapters/work-w000049.html",
"identity_basis": "pinned original PDF hash and exact page/bbox; never display number",
"status": "active"
}