Pith Number

pith:RPG4NP4Z

pith:2012:RPG4NP4ZKQUFYKQDPRIQ3OUXFF

not attested not anchored not stored refs pending

Moduli and periods of simply connected Enriques surfaces

J. M. E. Hyland, N. I. Shepherd-Barron, T. Ekedahl

arxiv:1210.0342 v1 · 2012-10-01 · 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{RPG4NP4ZKQUFYKQDPRIQ3OUXFF}

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	2026-05-18T03:44:22.704454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bcdc6bf9954285c2a037c510dba9729476fde6acabddfa24730b6ee45c5d621

Aliases

arxiv: 1210.0342 · arxiv_version: 1210.0342v1 · doi: 10.48550/arxiv.1210.0342 · pith_short_12: RPG4NP4ZKQUF · pith_short_16: RPG4NP4ZKQUFYKQD · pith_short_8: RPG4NP4Z

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/RPG4NP4ZKQUFYKQDPRIQ3OUXFF \
  | 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: 8bcdc6bf9954285c2a037c510dba9729476fde6acabddfa24730b6ee45c5d621

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa2bc8c90e992d69f816bde09b807c1593085d04b58f53d7500177f55b26e935",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-10-01T10:28:58Z",
    "title_canon_sha256": "0ce8849f872a67c0aa9bcd08a94b7ff5cc1eaa464e8d02c732acf530fa26c291"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0342",
    "kind": "arxiv",
    "version": 1
  }
}