Pith Number

pith:3B4NJVHZ

pith:2013:3B4NJVHZQGNWHT2WF5V4J2EM34

not attested not anchored not stored refs pending

On the PSL(2,19)-invariant cubic sevenfold

Atanas Iliev, Xavier Roulleau

arxiv:1301.1142 v1 · 2013-01-07 · 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{3B4NJVHZQGNWHT2WF5V4J2EM34}

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	2026-05-18T03:37:06.736557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d878d4d4f9819b63cf562f6bc4e88cdf3d783c7c9b03722ac2067246cead8f04

Aliases

arxiv: 1301.1142 · arxiv_version: 1301.1142v1 · doi: 10.48550/arxiv.1301.1142 · pith_short_12: 3B4NJVHZQGNW · pith_short_16: 3B4NJVHZQGNWHT2W · pith_short_8: 3B4NJVHZ

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/3B4NJVHZQGNWHT2WF5V4J2EM34 \
  | 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: d878d4d4f9819b63cf562f6bc4e88cdf3d783c7c9b03722ac2067246cead8f04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47c34bd16cab27fada715de0c7141f6cd328975a3727ba0c6fae644c19f18239",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-01-07T10:00:58Z",
    "title_canon_sha256": "d002dc0e687cea5796e52dba24b2f52645f821c8fd0fb2b78eed9955bb85e031"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1142",
    "kind": "arxiv",
    "version": 1
  }
}