Pith Number

pith:VMEACA3W

pith:2014:VMEACA3WTQHY5ZVDLBL5EIULV4

not attested not anchored not stored refs pending

Fano manifolds whose elementary contractions are smooth $\mathbb P^1$-fibrations: A geometric characterization of flag varieties

Gianluca Occhetta, Jaros{\l}aw A. Wi\'sniewski, Kiwamu Watanabe, Luis E. Sol\'a Conde

arxiv:1407.3658 v3 · 2014-07-14 · 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{VMEACA3WTQHY5ZVDLBL5EIULV4}

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	2026-05-18T00:34:10.714087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab080103769c0f8ee6a35857d2228baf19e5d209c583df030b26620c52a278eb

Aliases

arxiv: 1407.3658 · arxiv_version: 1407.3658v3 · doi: 10.48550/arxiv.1407.3658 · pith_short_12: VMEACA3WTQHY · pith_short_16: VMEACA3WTQHY5ZVD · pith_short_8: VMEACA3W

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/VMEACA3WTQHY5ZVDLBL5EIULV4 \
  | 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: ab080103769c0f8ee6a35857d2228baf19e5d209c583df030b26620c52a278eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8de99c208cf8870b544fc9651ce85fe86d04d3f4c2ea649f18d3ec8a2c8f488b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-07-14T14:06:57Z",
    "title_canon_sha256": "f6732e9123e03f682f7bca34a346fda7dc3819f2b5f60cea42e1ecbae3a295ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.3658",
    "kind": "arxiv",
    "version": 3
  }
}