Pith Number

pith:5OCTDBLV

pith:2015:5OCTDBLVYB5RA5XJJSYREJEAS3

not attested not anchored not stored refs pending

The Coolidge-Nagata conjecture

Karol Palka, Mariusz Koras

arxiv:1502.07149 v1 · 2015-02-25 · math.AG · math.AT · 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{5OCTDBLVYB5RA5XJJSYREJEAS3}

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	2026-05-18T00:23:02.167658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb85318575c07b1076e94cb112248096e20ea51ab8a625d1aa9c5934ebb50a4c

Aliases

arxiv: 1502.07149 · arxiv_version: 1502.07149v1 · doi: 10.48550/arxiv.1502.07149 · pith_short_12: 5OCTDBLVYB5R · pith_short_16: 5OCTDBLVYB5RA5XJ · pith_short_8: 5OCTDBLV

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/5OCTDBLVYB5RA5XJJSYREJEAS3 \
  | 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: eb85318575c07b1076e94cb112248096e20ea51ab8a625d1aa9c5934ebb50a4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23da76400d6825eececa8b696521f65eb4825dc189567254a282634963dd6016",
    "cross_cats_sorted": [
      "math.AT",
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-25T12:24:31Z",
    "title_canon_sha256": "776a844673ad8c562f39026e3f049574784ee3f6dc2963a2733d7dd7fa44663c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07149",
    "kind": "arxiv",
    "version": 1
  }
}