Pith Number

pith:HWDZ2S3X

pith:2014:HWDZ2S3X3NW7RVDN4WTG2LDFRQ

not attested not anchored not stored refs pending

Cox rings of cubic surfaces and Fano threefolds

Antonio Laface, Armand Heim, Juergen Hausen, Simon Keicher, Ulrich Derenthal

arxiv:1409.0799 v3 · 2014-09-02 · 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{HWDZ2S3X3NW7RVDN4WTG2LDFRQ}

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	2026-05-18T01:33:16.543286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d879d4b77db6df8d46de5a66d2c658c20b528e5ebe6d6b241d33c597f50bbe1

Aliases

arxiv: 1409.0799 · arxiv_version: 1409.0799v3 · doi: 10.48550/arxiv.1409.0799 · pith_short_12: HWDZ2S3X3NW7 · pith_short_16: HWDZ2S3X3NW7RVDN · pith_short_8: HWDZ2S3X

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/HWDZ2S3X3NW7RVDN4WTG2LDFRQ \
  | 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: 3d879d4b77db6df8d46de5a66d2c658c20b528e5ebe6d6b241d33c597f50bbe1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7b6a0b32f9383969e016f524dd9096a882cc30737f9b52e1c4e13d03c282185",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-09-02T17:20:49Z",
    "title_canon_sha256": "d585b60af01a73aef090c93acee3bf99bd621e61d8b0867c749377aa9b7299c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0799",
    "kind": "arxiv",
    "version": 3
  }
}