Pith Number

pith:OLQRA7VN

pith:2013:OLQRA7VNOGTI427SMLFN7TOCRL

not attested not anchored not stored refs pending

Horrocks Correspondence on a Quadric Surface

A. P. Rao, F. Malaspina

arxiv:1301.5436 v2 · 2013-01-23 · 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{OLQRA7VNOGTI427SMLFN7TOCRL}

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	2026-05-18T03:35:24.987102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72e1107ead71a68e6bf262cadfcdc28ae16a8593f3403891512a29ff4d88d098

Aliases

arxiv: 1301.5436 · arxiv_version: 1301.5436v2 · doi: 10.48550/arxiv.1301.5436 · pith_short_12: OLQRA7VNOGTI · pith_short_16: OLQRA7VNOGTI427S · pith_short_8: OLQRA7VN

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/OLQRA7VNOGTI427SMLFN7TOCRL \
  | 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: 72e1107ead71a68e6bf262cadfcdc28ae16a8593f3403891512a29ff4d88d098

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06ff596f453382d97664e99b63b7947a190c83c8713fb4baf7c990e9b9d5ab89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-01-23T08:58:43Z",
    "title_canon_sha256": "c979d2df4f42cf170a3261e01c9477664d99a68cf4cc64b4605f4b48b3893d1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5436",
    "kind": "arxiv",
    "version": 2
  }
}