Pith Number

pith:LU4ZMDK2

pith:2016:LU4ZMDK26ZU24K46VUOS4XXL6M

not attested not anchored not stored refs pending

On the likelihood of normalisation in combinatory logic

Katarzyna Grygiel, Maciej Bendkowski, Marek Zaionc

arxiv:1607.04908 v1 · 2016-07-17 · 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{LU4ZMDK26ZU24K46VUOS4XXL6M}

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	2026-05-18T01:10:56.388198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d39960d5af669ae2b9ead1d2e5eebf30a57721a18d0daed7139f5a154d802f2

Aliases

arxiv: 1607.04908 · arxiv_version: 1607.04908v1 · doi: 10.48550/arxiv.1607.04908 · pith_short_12: LU4ZMDK26ZU2 · pith_short_16: LU4ZMDK26ZU24K46 · pith_short_8: LU4ZMDK2

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/LU4ZMDK26ZU24K46VUOS4XXL6M \
  | 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: 5d39960d5af669ae2b9ead1d2e5eebf30a57721a18d0daed7139f5a154d802f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d937630523d77c7dd9991d63ce2857280ef24c5816f02f32eb72ea001fd20ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-07-17T19:30:40Z",
    "title_canon_sha256": "6dbb5285d00fabb79a114fd8b800f048613d158f28ffa996df1778e97d219aaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.04908",
    "kind": "arxiv",
    "version": 1
  }
}