Pith Number

pith:7QRJ63MB

pith:2012:7QRJ63MBU3HOWSC5GEC5CX6UDE

not attested not anchored not stored refs pending

Calabi-Yau Deformations and Negative Cyclic Homology

Louis de Thanhoffer de V\"olcsey, Michel Van den Bergh

arxiv:1201.1520 v4 · 2012-01-06 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QRJ63MBU3HOWSC5GEC5CX6UDE}

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.

Cited by

1 paper in Pith

Dimer Models and Hochschild Cohomology

Receipt and verification

First computed	2026-05-18T02:54:14.524869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc229f6d81a6ceeb485d3105d15fd419214b89ceb10c2496f64f864bd2e2cfcb

Aliases

arxiv: 1201.1520 · arxiv_version: 1201.1520v4 · doi: 10.48550/arxiv.1201.1520 · pith_short_12: 7QRJ63MBU3HO · pith_short_16: 7QRJ63MBU3HOWSC5 · pith_short_8: 7QRJ63MB

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/7QRJ63MBU3HOWSC5GEC5CX6UDE \
  | 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: fc229f6d81a6ceeb485d3105d15fd419214b89ceb10c2496f64f864bd2e2cfcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b679277d9edbb6de9813c0cbf0691ae5294741b3ccf012c7c54a025b280bf0a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2012-01-06T23:37:33Z",
    "title_canon_sha256": "8a1d819a9eb85d22ed03837ae838992e4bc2aae3824d98e9135afb89f5197799"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1520",
    "kind": "arxiv",
    "version": 4
  }
}