Pith Number

pith:EWFJ57BZ

pith:2014:EWFJ57BZ7KGWT5F2M6ZVHA3GOV

not attested not anchored not stored refs pending

Jacobian fibrations on the singular K3 surface of discriminant 3

Kazuki Utsumi

arxiv:1405.3577 v1 · 2014-05-14 · 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{EWFJ57BZ7KGWT5F2M6ZVHA3GOV}

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	2026-05-18T02:51:50.497977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

258a9efc39fa8d69f4ba67b35383667558618fe49b45ee2de7d7ef1cd051a129

Aliases

arxiv: 1405.3577 · arxiv_version: 1405.3577v1 · doi: 10.48550/arxiv.1405.3577 · pith_short_12: EWFJ57BZ7KGW · pith_short_16: EWFJ57BZ7KGWT5F2 · pith_short_8: EWFJ57BZ

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/EWFJ57BZ7KGWT5F2M6ZVHA3GOV \
  | 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: 258a9efc39fa8d69f4ba67b35383667558618fe49b45ee2de7d7ef1cd051a129

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99303273e83cb9b9160e04cb0d87a52ced8fb2cecde30efec552d12a88112ed2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-14T17:21:09Z",
    "title_canon_sha256": "dc8f7a066cdd4c42b333809d4aeb9f8bc70af405594c58e8ab4bfa659373aac4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3577",
    "kind": "arxiv",
    "version": 1
  }
}