Pith Number

pith:CD6GJ64L

pith:2012:CD6GJ64LNKMHF2NFSF2DDBOPTY

not attested not anchored not stored refs pending

The Nori fundamental gerbe of a fibered category

Angelo Vistoli, Niels Borne

arxiv:1204.1260 v5 · 2012-04-05 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CD6GJ64LNKMHF2NFSF2DDBOPTY}

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	2026-05-18T03:37:52.942493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10fc64fb8b6a9872e9a591743185cf9e21e062ff361e0171bfc24e4789aa70d2

Aliases

arxiv: 1204.1260 · arxiv_version: 1204.1260v5 · doi: 10.48550/arxiv.1204.1260 · pith_short_12: CD6GJ64LNKMH · pith_short_16: CD6GJ64LNKMHF2NF · pith_short_8: CD6GJ64L

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/CD6GJ64LNKMHF2NFSF2DDBOPTY \
  | 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: 10fc64fb8b6a9872e9a591743185cf9e21e062ff361e0171bfc24e4789aa70d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4130b096770d3782599bfdd78c862e11b5f2aab3a0fb5f747c516ac94ece40e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-04-05T15:34:51Z",
    "title_canon_sha256": "a15bce30b14a6ee277466511d1bfbc1d062145bf7abcffc4325ec1fff7c1dbfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1260",
    "kind": "arxiv",
    "version": 5
  }
}