Pith Number

pith:ZQ3IC3BR

pith:2009:ZQ3IC3BRA2E6D774BW6PWVLERP

not attested not anchored not stored refs pending

Differential graded Lie algebras controlling infinitesimal deformations of coherent sheaves

Domenico Fiorenza, Donatella Iacono, Elena Martinengo

arxiv:0904.1301 v3 · 2009-04-08 · math.QA · 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{ZQ3IC3BRA2E6D774BW6PWVLERP}

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	2026-05-18T03:12:09.366060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc36816c310689e1fffc0dbcfb55648bc2b717ae15bb2926bde59fa383b4430d

Aliases

arxiv: 0904.1301 · arxiv_version: 0904.1301v3 · doi: 10.48550/arxiv.0904.1301 · pith_short_12: ZQ3IC3BRA2E6 · pith_short_16: ZQ3IC3BRA2E6D774 · pith_short_8: ZQ3IC3BR

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/ZQ3IC3BRA2E6D774BW6PWVLERP \
  | 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: cc36816c310689e1fffc0dbcfb55648bc2b717ae15bb2926bde59fa383b4430d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c93f02978539810b0e83df9a2030147f234bc518e02e3da74ae9f63d15fc6c0",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "math.QA",
    "submitted_at": "2009-04-08T10:11:51Z",
    "title_canon_sha256": "ebcc76b46c3372fbb798708d50fd53893ab7c376d55188f06d6fb7ad9e69c0a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1301",
    "kind": "arxiv",
    "version": 3
  }
}