Pith Number

pith:URQAF5FQ

pith:2013:URQAF5FQ72VPKODUWEW35XWP7J

not attested not anchored not stored refs pending

Globally generated vector bundles on a smooth quadric surface

Edoardo Ballico, Francesco Malaspina, Sukmoon Huh

arxiv:1312.2472 v2 · 2013-12-09 · 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{URQAF5FQ72VPKODUWEW35XWP7J}

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	2026-05-18T02:49:47.061880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a46002f4b0feaaf53874b12dbedecffa5b6b1e57557c9a9ff1d726b0040375d1

Aliases

arxiv: 1312.2472 · arxiv_version: 1312.2472v2 · doi: 10.48550/arxiv.1312.2472 · pith_short_12: URQAF5FQ72VP · pith_short_16: URQAF5FQ72VPKODU · pith_short_8: URQAF5FQ

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/URQAF5FQ72VPKODUWEW35XWP7J \
  | 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: a46002f4b0feaaf53874b12dbedecffa5b6b1e57557c9a9ff1d726b0040375d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdd866a601cb694587dd0a1751383ce81bf964003135e13cff82d1884791a40e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-12-09T15:43:10Z",
    "title_canon_sha256": "07dbbb33571345869cea63c4443e784d641adf5129b3674b54057dda27628bb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.2472",
    "kind": "arxiv",
    "version": 2
  }
}