Pith Number

pith:FNHHZPJC

pith:2009:FNHHZPJC2NKDZL264GOBCWESJG

not attested not anchored not stored refs pending

Enumeration of pyramids of one-dimensional pieces of arbitrary fixed integer length

Bergfinnur Durhuus, Soren Eilers

arxiv:0902.2274 v1 · 2009-02-13 · 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{FNHHZPJC2NKDZL264GOBCWESJG}

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	2026-05-18T03:40:37.153250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b4e7cbd22d3543caf5ee19c11589249a3f0c30e3a3ae82b2e0fc6699d009b65

Aliases

arxiv: 0902.2274 · arxiv_version: 0902.2274v1 · doi: 10.48550/arxiv.0902.2274 · pith_short_12: FNHHZPJC2NKD · pith_short_16: FNHHZPJC2NKDZL26 · pith_short_8: FNHHZPJC

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/FNHHZPJC2NKDZL264GOBCWESJG \
  | 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: 2b4e7cbd22d3543caf5ee19c11589249a3f0c30e3a3ae82b2e0fc6699d009b65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7acc714704006ef74d4d440fdae3f845e88fb2cf4426e5f083e60677b2117030",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-02-13T09:09:38Z",
    "title_canon_sha256": "e6ce9854bde77ca93d25494f8d3eb79a63a816c20764745f42340a943561999b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2274",
    "kind": "arxiv",
    "version": 1
  }
}