Pith Number

pith:BQ7PPBWM

pith:2004:BQ7PPBWMROO5LHH4ID2C4WKB7D

not attested not anchored not stored refs pending

The Renyi-Ulam pathological liar game with a fixed number of lies

Catherine H. Yan, Robert B. Ellis, Vadim Ponomarenko

arxiv:math/0407504 v2 · 2004-07-28 · 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{BQ7PPBWMROO5LHH4ID2C4WKB7D}

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	2026-05-18T04:36:09.503958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c3ef786cc8b9dd59cfc40f42e5941f8f268c400429db7ff78fde085c8571350

Aliases

arxiv: math/0407504 · arxiv_version: math/0407504v2 · doi: 10.48550/arxiv.math/0407504 · pith_short_12: BQ7PPBWMROO5 · pith_short_16: BQ7PPBWMROO5LHH4 · pith_short_8: BQ7PPBWM

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/BQ7PPBWMROO5LHH4ID2C4WKB7D \
  | 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: 0c3ef786cc8b9dd59cfc40f42e5941f8f268c400429db7ff78fde085c8571350

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0973e57c5783aaf92ed705b64bb541e48a10bf7d9dba85d8d587fb757cccd675",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2004-07-28T23:15:34Z",
    "title_canon_sha256": "47c01525fb89895d0142175e9c0a1e8d16c9c6aec1b6882a3c39c7e50cabab43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0407504",
    "kind": "arxiv",
    "version": 2
  }
}