Pith Number

pith:OPC52A7S

pith:2012:OPC52A7SBUUIUWJEI2ODVZXAC6

not attested not anchored not stored refs pending

Non-factorial nodal complete intersection threefolds

Slawomir Cynk, Slawomir Rams

arxiv:1205.6655 v1 · 2012-05-30 · math.AG · math.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPC52A7SBUUIUWJEI2ODVZXAC6}

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	2026-05-18T02:30:47.945681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73c5dd03f20d288a5924469c3ae6e017a4d15e49c23490b8de31d19aff1d52c5

Aliases

arxiv: 1205.6655 · arxiv_version: 1205.6655v1 · doi: 10.48550/arxiv.1205.6655 · pith_short_12: OPC52A7SBUUI · pith_short_16: OPC52A7SBUUIUWJE · pith_short_8: OPC52A7S

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/OPC52A7SBUUIUWJEI2ODVZXAC6 \
  | 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: 73c5dd03f20d288a5924469c3ae6e017a4d15e49c23490b8de31d19aff1d52c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4d9fb52c4be7bd34784c6d4f35150bb02dd82768e5aa981df81666425f0a215",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-05-30T13:01:47Z",
    "title_canon_sha256": "4fdf18f6585c1e253848c3497546243d67ded340733d98181bffd7a7a453acf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6655",
    "kind": "arxiv",
    "version": 1
  }
}