Pith Number

pith:YJ5HOKF2

pith:2012:YJ5HOKF27UI4UP5PRUFKP2AAXL

not attested not anchored not stored refs pending

A Categorical Model for the Lambda Calculus with Constructors

Barbara Petit

arxiv:1202.4678 v2 · 2012-02-21 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YJ5HOKF27UI4UP5PRUFKP2AAXL}

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	2026-05-18T04:00:51.337977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c27a7728bafd11ca3faf8d0aa7e800badc8fb16540421be3550f87266c612de9

Aliases

arxiv: 1202.4678 · arxiv_version: 1202.4678v2 · doi: 10.48550/arxiv.1202.4678 · pith_short_12: YJ5HOKF27UI4 · pith_short_16: YJ5HOKF27UI4UP5P · pith_short_8: YJ5HOKF2

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/YJ5HOKF27UI4UP5PRUFKP2AAXL \
  | 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: c27a7728bafd11ca3faf8d0aa7e800badc8fb16540421be3550f87266c612de9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7124281a0a3b66fb36762d5aacc1ec344b3f4538a65fabe72c9162f13a19cdcf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-02-21T15:48:06Z",
    "title_canon_sha256": "f15e8a2dae54a608eb8ec2d0fb634b33f6d965e7fa98f79f2136665a3d6c7bd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4678",
    "kind": "arxiv",
    "version": 2
  }
}