Pith Number

pith:3FFYS3LT

pith:2016:3FFYS3LTQUXQGQVI545MCH45TA

not attested not anchored not stored refs pending

Syntactic Structures of Regular Languages

Libor Pol\'ak, Ond\v{r}ej Kl\'ima

arxiv:1612.06247 v2 · 2016-12-19 · 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{3FFYS3LTQUXQGQVI545MCH45TA}

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	2026-05-18T00:29:21.058860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d94b896d73852f0342a8ef3ac11f9d98115da303098249576c349c4bd3a70582

Aliases

arxiv: 1612.06247 · arxiv_version: 1612.06247v2 · doi: 10.48550/arxiv.1612.06247 · pith_short_12: 3FFYS3LTQUXQ · pith_short_16: 3FFYS3LTQUXQGQVI · pith_short_8: 3FFYS3LT

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/3FFYS3LTQUXQGQVI545MCH45TA \
  | 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: d94b896d73852f0342a8ef3ac11f9d98115da303098249576c349c4bd3a70582

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cae82251907cbd499df8042c644e8421459e124fbdc267799711f25ad1baff1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-12-19T16:18:15Z",
    "title_canon_sha256": "05a9cf3bd10d07aef3f8939699f001cd951cf64dd70959d2c89f5f9c0b2f8915"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.06247",
    "kind": "arxiv",
    "version": 2
  }
}