Pith Number

pith:WRNDLLBK

pith:2014:WRNDLLBKQ5CU26FLPPVYZI2OV7

not attested not anchored not stored refs pending

Deforming elephants of Q-Fano threefolds

Taro Sano

arxiv:1404.0909 v3 · 2014-04-03 · 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{WRNDLLBKQ5CU26FLPPVYZI2OV7}

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	2026-05-18T01:04:06.025188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b45a35ac2a87454d78ab7beb8ca34eafe341903e7343cf2e5a5b145eb408e10a

Aliases

arxiv: 1404.0909 · arxiv_version: 1404.0909v3 · doi: 10.48550/arxiv.1404.0909 · pith_short_12: WRNDLLBKQ5CU · pith_short_16: WRNDLLBKQ5CU26FL · pith_short_8: WRNDLLBK

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/WRNDLLBKQ5CU26FLPPVYZI2OV7 \
  | 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: b45a35ac2a87454d78ab7beb8ca34eafe341903e7343cf2e5a5b145eb408e10a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5645fe15b143edbfbc7a57e426e0eaf740599a97c41546d9e09a53dbe5b6830e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-04-03T13:41:37Z",
    "title_canon_sha256": "98963ae3dc26d9321d74bb129d875ad79ce21b345036425bce7a3446f84b4509"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0909",
    "kind": "arxiv",
    "version": 3
  }
}