Pith Number

pith:2HRBGECT

pith:2018:2HRBGECTRDMS3NVBT5UXNWE6KV

not attested not anchored not stored refs pending

The Reachability Problem for Petri Nets is Not Elementary

Filip Mazowiecki, Jerome Leroux, Ranko Lazic, Slawomir Lasota, Wojciech Czerwinski

arxiv:1809.07115 v4 · 2018-09-19 · cs.FL · 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{2HRBGECTRDMS3NVBT5UXNWE6KV}

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	2026-05-17T23:48:50.752804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1e213105388d92db6a19f6976d89e5557a5a203f1648fdaac0655f406bbee15

Aliases

arxiv: 1809.07115 · arxiv_version: 1809.07115v4 · doi: 10.48550/arxiv.1809.07115 · pith_short_12: 2HRBGECTRDMS · pith_short_16: 2HRBGECTRDMS3NVB · pith_short_8: 2HRBGECT

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/2HRBGECTRDMS3NVBT5UXNWE6KV \
  | 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: d1e213105388d92db6a19f6976d89e5557a5a203f1648fdaac0655f406bbee15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47e9fdde1da55a17d1dcbd1c717125d4b85255e34a800d599e0c1b1f6b3c0198",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-09-19T10:39:00Z",
    "title_canon_sha256": "a0ff603eb9a6c0f2c9474c0c3d9dc00b24ce8ce878dbf5d8014319ecc5c25fbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07115",
    "kind": "arxiv",
    "version": 4
  }
}