Pith Number

pith:P3RFAWMC

pith:2018:P3RFAWMC7ZPALTVH3KUUYYVXOO

not attested not anchored not stored refs pending

Universal Safety for Timed Petri Nets is PSPACE-complete

Mohamed Faouzi Atig, Parosh Aziz Abdulla, Patrick Totzke, Radu Ciobanu, Richard Mayr

arxiv:1806.08170 v1 · 2018-06-21 · 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{P3RFAWMC7ZPALTVH3KUUYYVXOO}

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	2026-05-18T00:12:41.802573Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ee2505982fe5e05cea7daa94c62b773be7e6a23e2c93284062449622d32d326

Aliases

arxiv: 1806.08170 · arxiv_version: 1806.08170v1 · doi: 10.48550/arxiv.1806.08170 · pith_short_12: P3RFAWMC7ZPA · pith_short_16: P3RFAWMC7ZPALTVH · pith_short_8: P3RFAWMC

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/P3RFAWMC7ZPALTVH3KUUYYVXOO \
  | 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: 7ee2505982fe5e05cea7daa94c62b773be7e6a23e2c93284062449622d32d326

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4945635050fd7444b5965bee084e35d2e0a6be6dc503963f280e20b80ee0b7c3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-06-21T11:12:10Z",
    "title_canon_sha256": "62637e1f29966399892c5b233e55c235fa8df36600b303249469749380e78a89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08170",
    "kind": "arxiv",
    "version": 1
  }
}