Pith Number

pith:HOOT2SZE

pith:2015:HOOT2SZEH5UT2YQV7CPZRSCBXW

not attested not anchored not stored refs pending

Characterisations of elementary pseudo-caps and good eggs

Geertrui Van de Voorde, Sara Rottey

arxiv:1502.01150 v1 · 2015-02-04 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOOT2SZEH5UT2YQV7CPZRSCBXW}

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	2026-05-18T02:27:57.873445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b9d3d4b243f693d6215f89f98c841bdb1b01e2b0047c2363cee3cb27fcefbf5

Aliases

arxiv: 1502.01150 · arxiv_version: 1502.01150v1 · doi: 10.48550/arxiv.1502.01150 · pith_short_12: HOOT2SZEH5UT · pith_short_16: HOOT2SZEH5UT2YQV · pith_short_8: HOOT2SZE

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/HOOT2SZEH5UT2YQV7CPZRSCBXW \
  | 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: 3b9d3d4b243f693d6215f89f98c841bdb1b01e2b0047c2363cee3cb27fcefbf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edd753ec225d9e433feaabe7ab53ae6ebacd980621d3da2e0643804dbb01d7cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-02-04T10:48:49Z",
    "title_canon_sha256": "8fc7b1e3648dcfa2d8f10c000b1c8cd06efb8c918406a8fa003cbf787ec1bd8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01150",
    "kind": "arxiv",
    "version": 1
  }
}