Pith Number

pith:ICP4545N

pith:2009:ICP4545NF5IA6ZQIMDT5TH663O

not attested not anchored not stored refs pending

Nonabelian bundle 2-gerbes

Branislav Jurco

arxiv:0911.1552 v3 · 2009-11-08 · math.DG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ICP4545NF5IA6ZQIMDT5TH663O}

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	2026-07-04T17:19:51.615671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

409fcef3ad2f500f660860e7d99fdedb9dcb10ae4f0b4bbd19e95aabfa36b6e7

Aliases

arxiv: 0911.1552 · arxiv_version: 0911.1552v3 · doi: 10.48550/arxiv.0911.1552 · pith_short_12: ICP4545NF5IA · pith_short_16: ICP4545NF5IA6ZQI · pith_short_8: ICP4545N

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/ICP4545NF5IA6ZQIMDT5TH663O \
  | 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: 409fcef3ad2f500f660860e7d99fdedb9dcb10ae4f0b4bbd19e95aabfa36b6e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98c75644501c67cfb80c219dd3523b12d4159172f1d0651a8f919214ae933ba3",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-11-08T18:52:05Z",
    "title_canon_sha256": "b46ccf822c1584da48b8f0055ecc5f214f83328fbefe57ce20ec566e64e0c038"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1552",
    "kind": "arxiv",
    "version": 3
  }
}