Pith Number

pith:TSRT5MDE

pith:2012:TSRT5MDEBTNQ3Q7NK5ZGTKU3IZ

not attested not anchored not stored refs pending

Reachability Analysis of Communicating Pushdown Systems

Alexander Heussner (LaBRI, Anca Muscholl (LaBRI, CNRS, France), Gr\'egoire Sutre (LaBRI, J\'er\^ome Leroux (LaBRI, Universit\'e de Bordeaux

arxiv:1209.0359 v3 · 2012-09-03 · cs.LO · 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{TSRT5MDEBTNQ3Q7NK5ZGTKU3IZ}

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	2026-05-18T01:37:38.544370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ca33eb0640cdb0dc3ed577269aa9b467e737cd52faba917d27c3cca03b74b3c

Aliases

arxiv: 1209.0359 · arxiv_version: 1209.0359v3 · doi: 10.48550/arxiv.1209.0359 · pith_short_12: TSRT5MDEBTNQ · pith_short_16: TSRT5MDEBTNQ3Q7N · pith_short_8: TSRT5MDE

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/TSRT5MDEBTNQ3Q7NK5ZGTKU3IZ \
  | 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: 9ca33eb0640cdb0dc3ed577269aa9b467e737cd52faba917d27c3cca03b74b3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f2862c0908f56f457d906972ced4b742d868d9be2a6edd739557fd7bbf644d4",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-09-03T13:58:57Z",
    "title_canon_sha256": "7d92a10be5cb78585d5cd1c0427261fd0260bb95b19dc02fad461497b23593d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0359",
    "kind": "arxiv",
    "version": 3
  }
}