Pith Number

pith:2NPEE7H3

pith:2013:2NPEE7H3WKFWY7P4CRZLINDG7B

not attested not anchored not stored refs pending

Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, II

Takuzo Okada

arxiv:1310.5320 v4 · 2013-10-20 · 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{2NPEE7H3WKFWY7P4CRZLINDG7B}

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	2026-05-18T00:44:29.416093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d35e427cfbb28b6c7dfc1472b43466f860665412e83d6d122e83f77c64cd9368

Aliases

arxiv: 1310.5320 · arxiv_version: 1310.5320v4 · doi: 10.48550/arxiv.1310.5320 · pith_short_12: 2NPEE7H3WKFW · pith_short_16: 2NPEE7H3WKFWY7P4 · pith_short_8: 2NPEE7H3

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/2NPEE7H3WKFWY7P4CRZLINDG7B \
  | 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: d35e427cfbb28b6c7dfc1472b43466f860665412e83d6d122e83f77c64cd9368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2776904fbae2c89831cb4b347c5b1e9789eac02ccab875dee79ea15a754cbf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-10-20T11:02:12Z",
    "title_canon_sha256": "ae87a8044941675c4d00d1a55aa4a3b501a4e9ae8034453a2f83746fb1db56eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.5320",
    "kind": "arxiv",
    "version": 4
  }
}