Pith Number

pith:H2UGDDJA

pith:2015:H2UGDDJAR7NADUYMBFLVE2VUWY

not attested not anchored not stored refs pending

Some Loci of Rational Cubic Fourfolds

Francesco Russo, Giovanni Staglian\`o, Michele Bolognesi

arxiv:1504.05863 v6 · 2015-04-22 · 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{H2UGDDJAR7NADUYMBFLVE2VUWY}

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	2026-05-18T00:14:29.337704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ea8618d208fda01d30c0957526ab4b6389abf093d130904c4e278544465d8a7

Aliases

arxiv: 1504.05863 · arxiv_version: 1504.05863v6 · doi: 10.48550/arxiv.1504.05863 · pith_short_12: H2UGDDJAR7NA · pith_short_16: H2UGDDJAR7NADUYM · pith_short_8: H2UGDDJA

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/H2UGDDJAR7NADUYMBFLVE2VUWY \
  | 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: 3ea8618d208fda01d30c0957526ab4b6389abf093d130904c4e278544465d8a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "424f9bfcaf4d26780f6a511fcaf6f61eb28afbaad6ec42a4fb0a1d0622853963",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-04-22T16:26:00Z",
    "title_canon_sha256": "0996d57f98e8cd500210b1f039d59e7dfa7b33b5084ff5b4c77e28bb44a28362"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05863",
    "kind": "arxiv",
    "version": 6
  }
}