Pith Number

pith:ZS3QDCWY

pith:2012:ZS3QDCWYMYVMKRHJNY33TNC6DZ

not attested not anchored not stored refs pending

Relative Prym varieties associated to the double cover of an Enriques surface

Andrea Ferretti, Enrico Arbarello, Giulia Sacc\`a

arxiv:1211.4268 v2 · 2012-11-18 · 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{ZS3QDCWYMYVMKRHJNY33TNC6DZ}

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	2026-05-18T03:24:53.957585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccb7018ad8662ac544e96e37b9b45e1e48bce8ae9fe88fcc7175de532308680b

Aliases

arxiv: 1211.4268 · arxiv_version: 1211.4268v2 · doi: 10.48550/arxiv.1211.4268 · pith_short_12: ZS3QDCWYMYVM · pith_short_16: ZS3QDCWYMYVMKRHJ · pith_short_8: ZS3QDCWY

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/ZS3QDCWYMYVMKRHJNY33TNC6DZ \
  | 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: ccb7018ad8662ac544e96e37b9b45e1e48bce8ae9fe88fcc7175de532308680b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1b4ed1df8acc94e3dd7dfd329f737549c635471f49e55115672a28749fbf0a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-11-18T23:24:25Z",
    "title_canon_sha256": "1a02af27e64e780c579b828e961154aaee2ffbaf3a4904ed5edc291d951402f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4268",
    "kind": "arxiv",
    "version": 2
  }
}