Pith Number

pith:623FUQQC

pith:2013:623FUQQCGC4I6JHRDIYZXWAMWZ

not attested not anchored not stored refs pending

Higher Order Contact on Cayley's Ruled Cubic Surface

Hans Havlicek

arxiv:1304.0233 v1 · 2013-03-31 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{623FUQQCGC4I6JHRDIYZXWAMWZ}

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	2026-05-18T03:29:25.609447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6b65a420230b88f24f11a319bd80cb64b8ab7405652deb438325d0ac44dd13e

Aliases

arxiv: 1304.0233 · arxiv_version: 1304.0233v1 · doi: 10.48550/arxiv.1304.0233 · pith_short_12: 623FUQQCGC4I · pith_short_16: 623FUQQCGC4I6JHR · pith_short_8: 623FUQQC

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/623FUQQCGC4I6JHRDIYZXWAMWZ \
  | 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: f6b65a420230b88f24f11a319bd80cb64b8ab7405652deb438325d0ac44dd13e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8b8482ebf08dd5b6d48269141f8232061475c08727f1831c76a358d88cd9c53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-03-31T17:17:12Z",
    "title_canon_sha256": "64da16b05f28dd08691825c4de677faea97aefd97b80adf5bd6846176bcbcd62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0233",
    "kind": "arxiv",
    "version": 1
  }
}