Pith Number

pith:MG7ZSU3P

pith:2018:MG7ZSU3PWCJTUPKQY7A6M6SAA3

not attested not anchored not stored refs pending

Generically nef vector bundles on ruled surfaces

Francesco Zucconi, Valentina Beorchia

arxiv:1803.09280 v1 · 2018-03-25 · 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{MG7ZSU3PWCJTUPKQY7A6M6SAA3}

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	2026-05-18T00:20:12.118239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61bf99536fb0933a3d50c7c1e67a4006d86bff72badf5fee96b06082bf6feea8

Aliases

arxiv: 1803.09280 · arxiv_version: 1803.09280v1 · doi: 10.48550/arxiv.1803.09280 · pith_short_12: MG7ZSU3PWCJT · pith_short_16: MG7ZSU3PWCJTUPKQ · pith_short_8: MG7ZSU3P

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/MG7ZSU3PWCJTUPKQY7A6M6SAA3 \
  | 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: 61bf99536fb0933a3d50c7c1e67a4006d86bff72badf5fee96b06082bf6feea8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b074f4e8ec7bc62a9fdc43ca874112c46166f09c5bd597194d2e11ce8d7ae4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-03-25T15:49:29Z",
    "title_canon_sha256": "72eee10e02f0312c1984369d4ca664d5ed921cc3a4080b159f3768b2f26fc59a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09280",
    "kind": "arxiv",
    "version": 1
  }
}