Pith Number

pith:DLPFZ7E7

pith:2013:DLPFZ7E7ANRUT3L4WIWS44PNSR

not attested not anchored not stored refs pending

Revisiting the Equivalence Problem for Finite Multitape Automata

James Worrell

arxiv:1303.6704 v2 · 2013-03-26 · 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{DLPFZ7E7ANRUT3L4WIWS44PNSR}

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	2026-05-18T03:26:33.424823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ade5cfc9f036349ed7cb22d2e71ed9453a473b6d591a351d24f7b7804248f9d

Aliases

arxiv: 1303.6704 · arxiv_version: 1303.6704v2 · doi: 10.48550/arxiv.1303.6704 · pith_short_12: DLPFZ7E7ANRU · pith_short_16: DLPFZ7E7ANRUT3L4 · pith_short_8: DLPFZ7E7

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/DLPFZ7E7ANRUT3L4WIWS44PNSR \
  | 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: 1ade5cfc9f036349ed7cb22d2e71ed9453a473b6d591a351d24f7b7804248f9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f03b50791cb7dd9f46ee293f388cb6372f9a810de6027e49664a636aef03620",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2013-03-26T23:34:15Z",
    "title_canon_sha256": "254dcecb3e9e45d8e2f59b92a606b95db4699230daea9dc267eb8fac3e0b5134"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.6704",
    "kind": "arxiv",
    "version": 2
  }
}