Pith Number

pith:AWQDTA2W

pith:2012:AWQDTA2WMD5BEMLYULKHFEIPBA

not attested not anchored not stored refs pending

Fixed Loci of the Anticanonical Complete Linear Systems of Anticanonical Rational Surfaces

Gioia Failla, Jes\'us Adrian Cerda Rodr\'iguez, Mustapha Lahyane, Osvaldo Osuna Castro

arxiv:1201.4881 v1 · 2012-01-23 · 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{AWQDTA2WMD5BEMLYULKHFEIPBA}

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	2026-05-18T04:04:04.900254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05a039835660fa123178a2d472910f081c9541f73e1bef2dceff5402a0dc7251

Aliases

arxiv: 1201.4881 · arxiv_version: 1201.4881v1 · doi: 10.48550/arxiv.1201.4881 · pith_short_12: AWQDTA2WMD5B · pith_short_16: AWQDTA2WMD5BEMLY · pith_short_8: AWQDTA2W

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/AWQDTA2WMD5BEMLYULKHFEIPBA \
  | 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: 05a039835660fa123178a2d472910f081c9541f73e1bef2dceff5402a0dc7251

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e3e6e2eb912b4091fd528770c61ef01a6745373dd4f3f2f8d4ee617fc3fa628",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-01-23T21:49:04Z",
    "title_canon_sha256": "b00bb5fd6535a7f3417efce49ee420e78505673cdf621c65a42519cdd2e3116d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4881",
    "kind": "arxiv",
    "version": 1
  }
}