Pith Number

pith:2IIV7Q7K

pith:2010:2IIV7Q7KTZVICMSKIZINNEASIK

not attested not anchored not stored refs pending

Bachet's Problem: as few weights to weigh them all

Edwin O'Shea

arxiv:1010.5486 v1 · 2010-10-26 · math.HO · math.CO · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2IIV7Q7KTZVICMSKIZINNEASIK}

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	2026-05-18T04:38:38.625432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2115fc3ea9e6a81324a4650d6901242a9bf30cfb5734015609baee5dd2fd497

Aliases

arxiv: 1010.5486 · arxiv_version: 1010.5486v1 · doi: 10.48550/arxiv.1010.5486 · pith_short_12: 2IIV7Q7KTZVI · pith_short_16: 2IIV7Q7KTZVICMSK · pith_short_8: 2IIV7Q7K

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/2IIV7Q7KTZVICMSKIZINNEASIK \
  | 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: d2115fc3ea9e6a81324a4650d6901242a9bf30cfb5734015609baee5dd2fd497

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3dadbf4600742adf4fcddb46126292f10d2e22959957f6a0495ff9a81302b07a",
    "cross_cats_sorted": [
      "math.CO",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2010-10-26T19:06:53Z",
    "title_canon_sha256": "4e904c3080bcd46d3d447f8f53dacae49e7ae1c9781a2cea71a2164d8865dba9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.5486",
    "kind": "arxiv",
    "version": 1
  }
}