Pith Number

pith:QCWWA6G6

pith:2014:QCWWA6G6LUO6LQTMW4KXTIII3B

not attested not anchored not stored refs pending

Modular surfaces associated with toric K3 hypersurfaces

Atsuhira Nagano, Kazushi Ueda, Kenji Hashimoto

arxiv:1403.5818 v1 · 2014-03-23 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QCWWA6G6LUO6LQTMW4KXTIII3B}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:55:47.682965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80ad6078de5d1de5c26cb71579a108d85f493d4f5e89bc1ef9449d2879f3b2d2

Aliases

arxiv: 1403.5818 · arxiv_version: 1403.5818v1 · doi: 10.48550/arxiv.1403.5818 · pith_short_12: QCWWA6G6LUO6 · pith_short_16: QCWWA6G6LUO6LQTM · pith_short_8: QCWWA6G6

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/QCWWA6G6LUO6LQTMW4KXTIII3B \
  | 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: 80ad6078de5d1de5c26cb71579a108d85f493d4f5e89bc1ef9449d2879f3b2d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6d6908df50c09469ebc47b50a645d774d3449a8f7881de5991debf8b83a9915",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-03-23T23:30:02Z",
    "title_canon_sha256": "c2198fcabf6297923e68742198376d13e7049f85747b0c2a2c2d5d23fcec090b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5818",
    "kind": "arxiv",
    "version": 1
  }
}