Pith Number

pith:DMFNDRCN

pith:2000:DMFNDRCNKQWPZCBA4QO6LRFEE2

not attested not anchored not stored refs pending

On the class of languages recognizable by 1-way quantum finite automata

Andris Ambainis, Arnolds Kikusts, Maris Valdats

arxiv:quant-ph/0009004 v1 · 2000-09-01 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DMFNDRCNKQWPZCBA4QO6LRFEE2}

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	2026-07-04T14:45:31.357190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b0ad1c44d542cfc8820e41de5c4a426b0d19c679346784c8914a0cce5b277b6

Aliases

arxiv: quant-ph/0009004 · arxiv_version: quant-ph/0009004v1 · doi: 10.48550/arxiv.quant-ph/0009004 · pith_short_12: DMFNDRCNKQWP · pith_short_16: DMFNDRCNKQWPZCBA · pith_short_8: DMFNDRCN

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/DMFNDRCNKQWPZCBA4QO6LRFEE2 \
  | 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: 1b0ad1c44d542cfc8820e41de5c4a426b0d19c679346784c8914a0cce5b277b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3abe1f480f238f31584748c4410c0f4bfd4e89f0b063addda68a532bfa4b36a0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2000-09-01T17:41:45Z",
    "title_canon_sha256": "6eca0f8c49a1db5724c1ff5dc8de1c3e8e342aefb9c6b26fbac1dcc2cd400666"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0009004",
    "kind": "arxiv",
    "version": 1
  }
}