Pith Number

pith:NCYL26JP

pith:2012:NCYL26JPTEBJMA64EPBI76OPBM

not attested not anchored not stored refs pending

Cubic symmetroids and vector bundles on a quadric surface

Sukmoon Huh

arxiv:1211.1104 v1 · 2012-11-06 · 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{NCYL26JPTEBJMA64EPBI76OPBM}

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	2026-05-18T03:41:28.581869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68b0bd792f99029603dc23c28ff9cf0b1b5e4bc55f7c60376d6b75669ef8f533

Aliases

arxiv: 1211.1104 · arxiv_version: 1211.1104v1 · doi: 10.48550/arxiv.1211.1104 · pith_short_12: NCYL26JPTEBJ · pith_short_16: NCYL26JPTEBJMA64 · pith_short_8: NCYL26JP

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/NCYL26JPTEBJMA64EPBI76OPBM \
  | 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: 68b0bd792f99029603dc23c28ff9cf0b1b5e4bc55f7c60376d6b75669ef8f533

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "905a97d1d0ee5805e18f1d06b1cc9bf9bc2de92a87742e7c49f789e0af1d6f87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-11-06T04:22:56Z",
    "title_canon_sha256": "7e0645cc36e1ec6aec32c968f60ad956aca45083664efd5bb67e54be514c7ddd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1104",
    "kind": "arxiv",
    "version": 1
  }
}