Pith Number

pith:OQHW7SPE

pith:2005:OQHW7SPENC5WO5XJERBL5U3ZNI

not attested not anchored not stored refs pending

Palindromic Prefixes and Episturmian Words

St\'ephane Fischler

arxiv:math/0501420 v3 · 2005-01-24 · 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{OQHW7SPENC5WO5XJERBL5U3ZNI}

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	2026-05-18T04:02:36.574529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

740f6fc9e468bb6776e92442bed3796a3d564d187d4a6895ab6ac8a9fc7bd42b

Aliases

arxiv: math/0501420 · arxiv_version: math/0501420v3 · doi: 10.48550/arxiv.math/0501420 · pith_short_12: OQHW7SPENC5W · pith_short_16: OQHW7SPENC5WO5XJ · pith_short_8: OQHW7SPE

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/OQHW7SPENC5WO5XJERBL5U3ZNI \
  | 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: 740f6fc9e468bb6776e92442bed3796a3d564d187d4a6895ab6ac8a9fc7bd42b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "804b8d43daa8c8bba22859fd9889a2e99483cce45000cbcbbf3a9f67b56dcdea",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2005-01-24T18:44:05Z",
    "title_canon_sha256": "cd001049e2dac9e86ed7674fcae4d186f4d04ee42bdc914c010b1c00fb83e466"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0501420",
    "kind": "arxiv",
    "version": 3
  }
}