Pith Number

pith:DCSUCMYN

pith:1999:DCSUCMYNBP2G7DNMERUQVZJQDF

not attested not anchored not stored refs pending

Quantum finite multitape automata

Andris Ambainis, Marats Golovkins, Marek Karpinski, Richard Bonner, Rusins Freivalds

arxiv:quant-ph/9905026 v1 · 1999-05-07 · quant-ph · cs.CC · 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{DCSUCMYNBP2G7DNMERUQVZJQDF}

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	2026-05-18T04:20:05.597239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18a541330d0bf46f8dac24690ae530196efce8d6f4e44b85c69339852a4cf10d

Aliases

arxiv: quant-ph/9905026 · arxiv_version: quant-ph/9905026v1 · doi: 10.48550/arxiv.quant-ph/9905026 · pith_short_12: DCSUCMYNBP2G · pith_short_16: DCSUCMYNBP2G7DNM · pith_short_8: DCSUCMYN

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/DCSUCMYNBP2G7DNMERUQVZJQDF \
  | 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: 18a541330d0bf46f8dac24690ae530196efce8d6f4e44b85c69339852a4cf10d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3f9dc91ba4f6e9d3108e80ebe0878c5b62780aec372b933a6bb976feface49f",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.FL"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-05-07T15:05:45Z",
    "title_canon_sha256": "ec4535504133ea394f3c2f336519b7e422c991de28a9543c77862ab331cd5e21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9905026",
    "kind": "arxiv",
    "version": 1
  }
}