Pith Number

pith:6HW4SCBN

pith:2012:6HW4SCBNWZOQWRYUT34EHAW47G

not attested not anchored not stored refs pending

Partially-commutative context-free languages

S{\l}awomir Lasota (Institute of Informatics, University of Warsaw), Wojciech Czerwi\'nski (Institute of Informatics

arxiv:1208.2747 v1 · 2012-08-14 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6HW4SCBNWZOQWRYUT34EHAW47G}

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	2026-05-18T03:48:47.492139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1edc9082db65d0b47149ef84382dcf9af5e31b1a1337737b7e29102b7b41294

Aliases

arxiv: 1208.2747 · arxiv_version: 1208.2747v1 · doi: 10.48550/arxiv.1208.2747 · pith_short_12: 6HW4SCBNWZOQ · pith_short_16: 6HW4SCBNWZOQWRYU · pith_short_8: 6HW4SCBN

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/6HW4SCBNWZOQWRYUT34EHAW47G \
  | 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: f1edc9082db65d0b47149ef84382dcf9af5e31b1a1337737b7e29102b7b41294

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f3fadb83bed14c69143395b7f73d8073e609a8908ca59747cd6aeb2bcacc5f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-08-14T01:51:45Z",
    "title_canon_sha256": "e6d871a1b310b85f0c9581e082ebfded24ebe31539e37f2f915dff5d46d7b3bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2747",
    "kind": "arxiv",
    "version": 1
  }
}