Pith Number

pith:GMNWYK4L

pith:2017:GMNWYK4L5RUF2TLG4CZ6NTGIBZ

not attested not anchored not stored refs pending

Locally Nameless Permutation Types

Edsko de Vries, Vasileios Koutavas

arxiv:1710.08444 v1 · 2017-10-23 · cs.PL · 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{GMNWYK4L5RUF2TLG4CZ6NTGIBZ}

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	2026-05-18T00:32:16.041981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

331b6c2b8bec685d4d66e0b3e6ccc80e571424d11102e78f98d83c650c7caab5

Aliases

arxiv: 1710.08444 · arxiv_version: 1710.08444v1 · doi: 10.48550/arxiv.1710.08444 · pith_short_12: GMNWYK4L5RUF · pith_short_16: GMNWYK4L5RUF2TLG · pith_short_8: GMNWYK4L

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/GMNWYK4L5RUF2TLG4CZ6NTGIBZ \
  | 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: 331b6c2b8bec685d4d66e0b3e6ccc80e571424d11102e78f98d83c650c7caab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c2a4c3fb73fd0198c794d71aff4c8446134c95acd96a14131899f78487df78d",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2017-10-23T18:30:04Z",
    "title_canon_sha256": "0912e71804af7127607f1c398e6b5c8a4e91220d46de1ec20fc35496f4f854ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.08444",
    "kind": "arxiv",
    "version": 1
  }
}