Pith Number

pith:CVKNNQCN

pith:2013:CVKNNQCN2UAQQHGTT4JFHWHSLS

not attested not anchored not stored refs pending

Characterization of log del Pezzo pairs via anticanonical models

Dongseon Hwang, Jinhyung Park

arxiv:1303.2973 v2 · 2013-03-12 · math.AG · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CVKNNQCN2UAQQHGTT4JFHWHSLS}

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	2026-05-18T03:27:13.383485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1554d6c04dd501081cd39f1253d8f25cba04f86b585d9fd8c714ef52b5e843d5

Aliases

arxiv: 1303.2973 · arxiv_version: 1303.2973v2 · doi: 10.48550/arxiv.1303.2973 · pith_short_12: CVKNNQCN2UAQ · pith_short_16: CVKNNQCN2UAQQHGT · pith_short_8: CVKNNQCN

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/CVKNNQCN2UAQQHGTT4JFHWHSLS \
  | 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: 1554d6c04dd501081cd39f1253d8f25cba04f86b585d9fd8c714ef52b5e843d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "736a49a2da125bec9bdeba53ddf0045a3a8900d7f295a1e70b061a14f432ab77",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-03-12T18:07:07Z",
    "title_canon_sha256": "528e422b42daa3dd329c46313aec2a4df92306d5a571cc3ddff2842c7a41db4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.2973",
    "kind": "arxiv",
    "version": 2
  }
}