Pith Number

pith:QHODHTYE

pith:2004:QHODHTYE3NE5WNRRD77ZZXMMM2

not attested not anchored not stored refs pending

The Algebra of Binary Search Trees

F. Hivert, J.-C. Novelli, J.-Y. Thibon

arxiv:math/0401089 v2 · 2004-01-09 · 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{QHODHTYE3NE5WNRRD77ZZXMMM2}

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	2026-05-18T03:34:00.537347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81dc33cf04db49db36311fff9cdd8c669d233823360fbc108c6785b16c65f51f

Aliases

arxiv: math/0401089 · arxiv_version: math/0401089v2 · doi: 10.48550/arxiv.math/0401089 · pith_short_12: QHODHTYE3NE5 · pith_short_16: QHODHTYE3NE5WNRR · pith_short_8: QHODHTYE

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/QHODHTYE3NE5WNRRD77ZZXMMM2 \
  | 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: 81dc33cf04db49db36311fff9cdd8c669d233823360fbc108c6785b16c65f51f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81378c225b08151986e1fed094bc09e97a7d92dcc2add3a67efb92a3550e7b77",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2004-01-09T10:18:43Z",
    "title_canon_sha256": "df03bc2fcc130da548186c5499bd81b06f30f2b759ceb4010bef5e2598f041e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0401089",
    "kind": "arxiv",
    "version": 2
  }
}