Pith Number

pith:2RCT7H5G

pith:2018:2RCT7H5GNWEYULURLTWCUJ4WPI

not attested not anchored not stored refs pending

Statistical properties of lambda terms

Maciej Bendkowski, Olivier Bodini, Sergey Dovgal

arxiv:1805.09419 v2 · 2018-05-23 · math.CO · cs.LO · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2RCT7H5GNWEYULURLTWCUJ4WPI}

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	2026-05-18T00:08:14.790756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4453f9fa66d898a2e915cec2a27967a3bf98f4ec74768e463f7b3df43c7a270

Aliases

arxiv: 1805.09419 · arxiv_version: 1805.09419v2 · doi: 10.48550/arxiv.1805.09419 · pith_short_12: 2RCT7H5GNWEY · pith_short_16: 2RCT7H5GNWEYULUR · pith_short_8: 2RCT7H5G

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/2RCT7H5GNWEYULURLTWCUJ4WPI \
  | 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: d4453f9fa66d898a2e915cec2a27967a3bf98f4ec74768e463f7b3df43c7a270

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8d6a905316ce2b20f716ab621fe12b108cbef71cd525d1a6f7b3785afbc4ae3",
    "cross_cats_sorted": [
      "cs.LO",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-05-23T20:45:00Z",
    "title_canon_sha256": "8ef7566dc417433ac374a56634cbf4bd2b287a61935984eebe59bf6f29b8ea93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09419",
    "kind": "arxiv",
    "version": 2
  }
}