Pith Number

pith:OJZ2SJBW

pith:2019:OJZ2SJBWCDMDNFRSACLIWWYDM4

not attested not anchored not stored refs pending

Deformations of polystable sheaves on surfaces: quadraticity implies formality

Francesco Meazzini, Marco Manetti, Ruggero Bandiera

arxiv:1902.06486 v3 · 2019-02-18 · math.AG · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OJZ2SJBWCDMDNFRSACLIWWYDM4}

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	2026-07-05T01:10:54.780346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7273a9243610d836963200968b5b036711d6bfef81469d36093b4874bbd3d77f

Aliases

arxiv: 1902.06486 · arxiv_version: 1902.06486v3 · doi: 10.48550/arxiv.1902.06486 · pith_short_12: OJZ2SJBWCDMD · pith_short_16: OJZ2SJBWCDMDNFRS · pith_short_8: OJZ2SJBW

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/OJZ2SJBWCDMDNFRSACLIWWYDM4 \
  | 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: 7273a9243610d836963200968b5b036711d6bfef81469d36093b4874bbd3d77f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5d34c44c1b10c7ebaa15bec523b7cc8f72ce0dab36d3037d875a3f5f2bb3579",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-02-18T09:59:17Z",
    "title_canon_sha256": "8762781f3170a827d36bd631b8894c03373e5b62e2376dccb2afcfdfd2934490"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06486",
    "kind": "arxiv",
    "version": 3
  }
}