Pith Number

pith:FCGRQVSD

pith:2016:FCGRQVSDFIMFKTYBQYQ36ZX6FF

not attested not anchored not stored refs pending

Stable rationality of orbifold Fano threefold hypersurfaces

Takuzo Okada

arxiv:1608.01186 v3 · 2016-08-03 · 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{FCGRQVSDFIMFKTYBQYQ36ZX6FF}

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	2026-05-18T00:34:35.350172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

288d1856432a18554f018621bf66fe294f82edc805462c009724b9fcc901c858

Aliases

arxiv: 1608.01186 · arxiv_version: 1608.01186v3 · doi: 10.48550/arxiv.1608.01186 · pith_short_12: FCGRQVSDFIMF · pith_short_16: FCGRQVSDFIMFKTYB · pith_short_8: FCGRQVSD

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/FCGRQVSDFIMFKTYBQYQ36ZX6FF \
  | 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: 288d1856432a18554f018621bf66fe294f82edc805462c009724b9fcc901c858

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2971e0ae85463f46da992e9283fa836fd788267c6e38db28958f651a158003e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-08-03T13:26:39Z",
    "title_canon_sha256": "67b8cb355e66262f2b732825f049e0e454b78251d4308c071ebc88c0760874e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.01186",
    "kind": "arxiv",
    "version": 3
  }
}