Pith Number

pith:2DNO7ION

pith:2016:2DNO7IONF3IBEUP5O45SXZL3N2

not attested not anchored not stored refs pending

Unfolding Semantics of the Untyped {\lambda}-Calculus with letrec

Jan Rochel

arxiv:1610.05954 v1 · 2016-10-19 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DNO7IONF3IBEUP5O45SXZL3N2}

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	2026-05-18T01:01:50.564896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0daefa1cd2ed01251fd773b2be57b6e815526cc3f520d48bcf971c2233aab2e

Aliases

arxiv: 1610.05954 · arxiv_version: 1610.05954v1 · doi: 10.48550/arxiv.1610.05954 · pith_short_12: 2DNO7IONF3IB · pith_short_16: 2DNO7IONF3IBEUP5 · pith_short_8: 2DNO7ION

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/2DNO7IONF3IBEUP5O45SXZL3N2 \
  | 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: d0daefa1cd2ed01251fd773b2be57b6e815526cc3f520d48bcf971c2233aab2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59262b043acef4c0eee8487d5b0a7e0758ac7ed0182228f61a5684ae3245471c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2016-10-19T10:41:32Z",
    "title_canon_sha256": "034425ef85b23bc3a005217d272156597f59ea5513df0b5f3bda7b0487a0ef3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.05954",
    "kind": "arxiv",
    "version": 1
  }
}