Pith Number

pith:UKE6RIFE

pith:2019:UKE6RIFEKMWXSP2MBWO3EA2G4J

not attested not anchored not stored refs pending

Tree Automata as Algebras: Minimisation and Determinisation

Alexandra Silva, Gerco van Heerdt, Jurriaan Rot, Matteo Sammartino, Tobias Kapp\'e

arxiv:1904.08802 v2 · 2019-04-18 · 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{UKE6RIFEKMWXSP2MBWO3EA2G4J}

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	2026-07-05T05:38:06.181441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a289e8a0a4532d793f4c0d9db20346e276511bca895ce126a768d4badee2a56f

Aliases

arxiv: 1904.08802 · arxiv_version: 1904.08802v2 · doi: 10.48550/arxiv.1904.08802 · pith_short_12: UKE6RIFEKMWX · pith_short_16: UKE6RIFEKMWXSP2M · pith_short_8: UKE6RIFE

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/UKE6RIFEKMWXSP2MBWO3EA2G4J \
  | 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: a289e8a0a4532d793f4c0d9db20346e276511bca895ce126a768d4badee2a56f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "104135915ffd4efe69bd5ba2fdbeea31849d6b91357f4adcf4b07c48244ffbce",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-04-18T14:23:34Z",
    "title_canon_sha256": "70794c777a0c9d8dd79fdc83e89de3134e81bd750679eb2e3f056bb08fe9e788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08802",
    "kind": "arxiv",
    "version": 2
  }
}