Pith Number

pith:IQB4WVPT

pith:2009:IQB4WVPTHV4UME55IV4IC7SVR7

not attested not anchored not stored refs pending

Entropy sensitivity of languages defined by infinite automata, via Markov chains with forbidden transitions

Ecaterina Sava, Wilfried Huss, Wolfgang Woess

arxiv:0911.0142 v2 · 2009-11-01 · cs.FL · math.PR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQB4WVPTHV4UME55IV4IC7SVR7}

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	2026-05-18T04:33:36.486544Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4403cb55f33d794613bd4578817e558fe0c970bba6652b56ce93637b6ba264dc

Aliases

arxiv: 0911.0142 · arxiv_version: 0911.0142v2 · doi: 10.48550/arxiv.0911.0142 · pith_short_12: IQB4WVPTHV4U · pith_short_16: IQB4WVPTHV4UME55 · pith_short_8: IQB4WVPT

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/IQB4WVPTHV4UME55IV4IC7SVR7 \
  | 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: 4403cb55f33d794613bd4578817e558fe0c970bba6652b56ce93637b6ba264dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e23db4d19612aeac21622f4f4e9ff49167df45b921ba49ee27d1a7ca3efeb40",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2009-11-01T07:58:52Z",
    "title_canon_sha256": "b6a4d043a1e2ef26f3c384d33b6a95b210c6ef661866d239c426c1b8ee58d18c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0142",
    "kind": "arxiv",
    "version": 2
  }
}