Pith Number

pith:7X4GTYHH

pith:2017:7X4GTYHHGIMYO22T5QYSL2ZJIQ

not attested not anchored not stored refs pending

On a question of Ekedahl and Serre

Kang Zuo, Ke Chen, Xin Lu

arxiv:1703.10377 v2 · 2017-03-30 · 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{7X4GTYHHGIMYO22T5QYSL2ZJIQ}

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	2026-05-18T00:42:23.442445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdf869e0e73219876b53ec3125eb294413dbd5364dd9e22866676bc34b758cb2

Aliases

arxiv: 1703.10377 · arxiv_version: 1703.10377v2 · doi: 10.48550/arxiv.1703.10377 · pith_short_12: 7X4GTYHHGIMY · pith_short_16: 7X4GTYHHGIMYO22T · pith_short_8: 7X4GTYHH

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/7X4GTYHHGIMYO22T5QYSL2ZJIQ \
  | 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: fdf869e0e73219876b53ec3125eb294413dbd5364dd9e22866676bc34b758cb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b9a40ffb39bacc49a9c2e634dee8eb135c408a1d193e50de460243f63e46236",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-03-30T09:31:15Z",
    "title_canon_sha256": "5e28bd4c6125fbc6db5476b54594224b2f074b9a1518494a00f3c7e4a1751272"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10377",
    "kind": "arxiv",
    "version": 2
  }
}