Pith Number

pith:RUVZVELK

pith:2015:RUVZVELKSTH2FEBHQDB4IAKIT3

not attested not anchored not stored refs pending

Topological Entropy of Formal Languages

Daniel Borchmann, Friedrich Martin Schneider

arxiv:1507.03393 v2 · 2015-07-13 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUVZVELKSTH2FEBHQDB4IAKIT3}

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	2026-05-18T00:03:29.849447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d2b9a916a94cfa2902780c3c401489ed2720795e8db0d3189c7cc65c6e9e197

Aliases

arxiv: 1507.03393 · arxiv_version: 1507.03393v2 · doi: 10.48550/arxiv.1507.03393 · pith_short_12: RUVZVELKSTH2 · pith_short_16: RUVZVELKSTH2FEBH · pith_short_8: RUVZVELK

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/RUVZVELKSTH2FEBHQDB4IAKIT3 \
  | 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: 8d2b9a916a94cfa2902780c3c401489ed2720795e8db0d3189c7cc65c6e9e197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28410e74b853f517c811a04fa9021bb93d84368ca2b020407da12b91f7443eb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2015-07-13T11:07:34Z",
    "title_canon_sha256": "8576ee66477016feab1976309554e094d71f00852e2eb8d36e2c1cbaccd3bc1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03393",
    "kind": "arxiv",
    "version": 2
  }
}