Pith Number

pith:VZVWK5RR

pith:2018:VZVWK5RRKP32TYAAFZCKCL4T4D

not attested not anchored not stored refs pending

Exploring the Topological Entropy of Formal Languages

Florian Starke

arxiv:1801.07321 v2 · 2018-01-22 · cs.FL · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VZVWK5RRKP32TYAAFZCKCL4T4D}

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	2026-05-17T23:47:52.898037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae6b65763153f7a9e0002e44a12f93e0fadca5540e71b1a17a16a68b669d2388

Aliases

arxiv: 1801.07321 · arxiv_version: 1801.07321v2 · doi: 10.48550/arxiv.1801.07321 · pith_short_12: VZVWK5RRKP32 · pith_short_16: VZVWK5RRKP32TYAA · pith_short_8: VZVWK5RR

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/VZVWK5RRKP32TYAAFZCKCL4T4D \
  | 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: ae6b65763153f7a9e0002e44a12f93e0fadca5540e71b1a17a16a68b669d2388

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e4a3d967195a795ac15014306a4bf59b6859bafd880d677665ec23f029c024c",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-01-22T21:07:10Z",
    "title_canon_sha256": "6fa7873cc12466026cbd0f19fd07055a33b3bf61a23b22bb6ac2e04e44c70cf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07321",
    "kind": "arxiv",
    "version": 2
  }
}