Pith Number

pith:RXX5GD2D

pith:2010:RXX5GD2DWOKZVNMASL36A7DTYZ

not attested not anchored not stored refs pending

Things to do with a broken stick

Eugen J. Ionascu, Gabriel Prajitura

arxiv:1009.0890 v4 · 2010-09-05 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXX5GD2DWOKZVNMASL36A7DTYZ}

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	2026-05-18T03:27:33.268412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8defd30f43b3959ab58092f7e07c73c655f509c9dbc3e32614d0c8152ca24f39

Aliases

arxiv: 1009.0890 · arxiv_version: 1009.0890v4 · doi: 10.48550/arxiv.1009.0890 · pith_short_12: RXX5GD2DWOKZ · pith_short_16: RXX5GD2DWOKZVNMA · pith_short_8: RXX5GD2D

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/RXX5GD2DWOKZVNMASL36A7DTYZ \
  | 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: 8defd30f43b3959ab58092f7e07c73c655f509c9dbc3e32614d0c8152ca24f39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2097870466328e28a856dca195e70da61240ba7580e19c350ba05b2f4e1b4d28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2010-09-05T04:44:45Z",
    "title_canon_sha256": "9b533e86ef19a3081bbbcef7a0ea8cbaeb905248267b324f371b0dd387dc40e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0890",
    "kind": "arxiv",
    "version": 4
  }
}