Pith Number

pith:OQE6JRT7

pith:2013:OQE6JRT77CFIOULAGRH7OEGKPL

not attested not anchored not stored refs pending

Exact model categories, approximation theory, and cohomology of quasi-coherent sheaves

Jan Stovicek

arxiv:1301.5206 v2 · 2013-01-22 · math.CT · math.AG · math.AT · math.RT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQE6JRT77CFIOULAGRH7OEGKPL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:48:17.862647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7409e4c67ff88a875160344ff710ca7ad884e424c6f2530b3ca3663532a6baf4

Aliases

arxiv: 1301.5206 · arxiv_version: 1301.5206v2 · doi: 10.48550/arxiv.1301.5206 · pith_short_12: OQE6JRT77CFI · pith_short_16: OQE6JRT77CFIOULA · pith_short_8: OQE6JRT7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/OQE6JRT77CFIOULAGRH7OEGKPL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 7409e4c67ff88a875160344ff710ca7ad884e424c6f2530b3ca3663532a6baf4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "618ee0e13e356389fc6c9a9427dad5586b61610d776ec4fe6759e0089353bdba",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2013-01-22T15:00:15Z",
    "title_canon_sha256": "539eff2845feda69f3a8bf8cf2c9fd34841e57a7f7fabef371349a8f1cceb95f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5206",
    "kind": "arxiv",
    "version": 2
  }
}