Pith Number

pith:QTD7C76C

pith:2011:QTD7C76CZDXOH2YDX2RLF3KXEZ

not attested not anchored not stored refs pending

Pushing undecidability of the isolation problem for probabilistic automata

Hugo Gimbert (LaBRI), LIAFA), Nathana\"el Fijalkow (ENS Cachan, Youssouf Oualhadj (LaBRI)

arxiv:1104.3054 v1 · 2011-04-14 · 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{QTD7C76CZDXOH2YDX2RLF3KXEZ}

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	2026-05-18T04:24:06.665836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84c7f17fc2c8eee3eb03bea2b2ed5726717186c5c1664c34a207206b817615b2

Aliases

arxiv: 1104.3054 · arxiv_version: 1104.3054v1 · doi: 10.48550/arxiv.1104.3054 · pith_short_12: QTD7C76CZDXO · pith_short_16: QTD7C76CZDXOH2YD · pith_short_8: QTD7C76C

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/QTD7C76CZDXOH2YDX2RLF3KXEZ \
  | 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: 84c7f17fc2c8eee3eb03bea2b2ed5726717186c5c1664c34a207206b817615b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea3c59b0558c841846bc18eca3ac25ee97614cb818d3b74f2f4d98f6e3f2a4b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-04-14T09:48:34Z",
    "title_canon_sha256": "5484ee70e3894f7829fee9ce7dcb2c54d60c5a8006fee4656a2b90220df03282"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3054",
    "kind": "arxiv",
    "version": 1
  }
}