Pith Number

pith:GJ2Y6V5M

pith:2009:GJ2Y6V5MS2GNV3INPPYRBJS2N4

not attested not anchored not stored refs pending

Hochschild cohomology for Lie algebroids

Carlo A. Rossi, Damien Calaque, Michel Van den Bergh

arxiv:0908.2630 v3 · 2009-08-18 · math.AG · 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{GJ2Y6V5MS2GNV3INPPYRBJS2N4}

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	2026-05-18T04:25:39.283830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32758f57ac968cdaed0d7bf110a65a6f013ee71703b7a00f54e82360c27ed26d

Aliases

arxiv: 0908.2630 · arxiv_version: 0908.2630v3 · doi: 10.48550/arxiv.0908.2630 · pith_short_12: GJ2Y6V5MS2GN · pith_short_16: GJ2Y6V5MS2GNV3IN · pith_short_8: GJ2Y6V5M

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/GJ2Y6V5MS2GNV3INPPYRBJS2N4 \
  | 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: 32758f57ac968cdaed0d7bf110a65a6f013ee71703b7a00f54e82360c27ed26d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e58ae7ad020f0a0187c02b681ed604d46a9e8239d5360265d526aceb5e108820",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-08-18T20:06:45Z",
    "title_canon_sha256": "a53c1b2e28d30ad1d5ae45bef4c3c0fde68e0bd9dfbee7b8448a5df074d78b31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2630",
    "kind": "arxiv",
    "version": 3
  }
}