Pith Number

pith:2OP4HMVG

pith:2008:2OP4HMVGBATPCZQNT4NFXYEASY

not attested not anchored not stored refs pending

Pattern avoidance in binary trees

Eric S. Rowland

arxiv:0809.0488 v2 · 2008-09-02 · 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{2OP4HMVGBATPCZQNT4NFXYEASY}

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	2026-05-18T02:24:57.018910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d39fc3b2a60826f1660d9f1a5be08096368cd531123a026fc89928f5e74704c5

Aliases

arxiv: 0809.0488 · arxiv_version: 0809.0488v2 · doi: 10.48550/arxiv.0809.0488 · pith_short_12: 2OP4HMVGBATP · pith_short_16: 2OP4HMVGBATPCZQN · pith_short_8: 2OP4HMVG

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/2OP4HMVGBATPCZQNT4NFXYEASY \
  | 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: d39fc3b2a60826f1660d9f1a5be08096368cd531123a026fc89928f5e74704c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76d69d48fed54d696d747f3d6390bc29d4547169a67e11d58d45f5e80fa3f9a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-09-02T18:14:38Z",
    "title_canon_sha256": "bb0a0299c2be6f760d0ba999c60cae11a5636c0e3513efa125e40c00894b8f0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0488",
    "kind": "arxiv",
    "version": 2
  }
}