Pith Number

pith:BS672F5W

pith:2013:BS672F5WKXCFAGOV2L7PCXQBWE

not attested not anchored not stored refs pending

Godement resolutions and sheaf homotopy theory

Agusti Roig, Beatriz Rodriguez Gonzalez

arxiv:1302.2442 v4 · 2013-02-11 · math.AG · math.CT · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BS672F5WKXCFAGOV2L7PCXQBWE}

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	2026-05-18T02:42:54.182610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cbdfd17b655c45019d5d2fef15e01b13f2008d4b5de2236e6ff044e41a71238

Aliases

arxiv: 1302.2442 · arxiv_version: 1302.2442v4 · doi: 10.48550/arxiv.1302.2442 · pith_short_12: BS672F5WKXCF · pith_short_16: BS672F5WKXCFAGOV · pith_short_8: BS672F5W

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/BS672F5WKXCFAGOV2L7PCXQBWE \
  | 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: 0cbdfd17b655c45019d5d2fef15e01b13f2008d4b5de2236e6ff044e41a71238

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e368ee3d9cb5f2f0c778bb94eb1f59a5c8443b69b217a744e1d7a6fd94ea827",
    "cross_cats_sorted": [
      "math.CT",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-02-11T10:50:20Z",
    "title_canon_sha256": "659f6df1387fac422a06c7be20b66adea483316025281d61b26b6b0bae16039f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2442",
    "kind": "arxiv",
    "version": 4
  }
}